- set browser title date
function formatDateTime(date) { //12:34:00
date = date || new Date();
return date.getHours() + ":" + date.getMinutes() + ":" + date.getSeconds();
}
(function() {
document.title = formatDateTime() + " " + document.title;
}()); //immediate
- browser scroll
document.body.scrollTop = 500; //c
$(window).scrollTop(500); //cfi
- json comments
/**** json ****
'{
"id" : 99,
"comments" : [ "foo",
"bar",
"yak yak yak"
],
"debug" : { "version" : "1a",
"todo" : [ "hack",
"the",
"code"
]
}
}'
****/
var json = '{ "id" : 99, "comments" : [ "foo", "bar", "yak yak yak" ], "debug" : { "version" : "1a", "todo" : [ "hack", "the", "code" ] }}',
x = JSON.parse(json);
- powershell format file one line, json
function formatOneLine($infile, $outfile) {
$x = [io.file]::readAllText($infile)
$x = ($x -replace "`r`n", "") #remove line breaks
$x = ($x -replace " +", " ") #replace spaces with single
"len: {0}" -f $x.length
$x
$x > $outfile
}
#$infile = "x:\input.txt"
#$outfile = "x:\output.txt"
#formatOneLine $infile $outfile
- html offline caching manifest file, mvc
filename: file.appcache
CACHE MANIFEST
#file.appcache v0102_140000
/js/file.js
style.css
- mime types
- html offline caching manifest file: .appcache = text/cache-manifest
- less.css: .less = text/css
- powershell utf8 getbytes string
[text.encoding]::utf8.getBytes("foo bar")
#102, 111, 111, 32, 98, 97, 114
- powershell print ascii characters values
#0..127
65..90 | %{"{0} {1}" -f $_, [char]$_}
97..122 | %{"{0} {1}" -f $_, [char]$_}
65 A 97 a
66 B 98 b
67 C 99 c
68 D 100 d
69 E 101 e
70 F 102 f
71 G 103 g
72 H 104 h
73 I 105 i
74 J 106 j
75 K 107 k
76 L 108 l
77 M 109 m
78 N 110 n
79 O 111 o
80 P 112 p
81 Q 113 q
82 R 114 r
83 S 115 s
84 T 116 t
85 U 117 u
86 V 118 v
87 W 119 w
88 X 120 x
89 Y 121 y
90 Z 122 z
- powershell byte array
[byte[]] $bytes = 0, 1, 255
[byte[]] (0, 1, 255) #alt
- regex lookbehind non-capturing regex, array, csv, records
- $data = "^1,2,,foo"
- match 1st element
$data -match "(?<=\^)\w*" | out-null; $matches[0] #1
- match 2nd element (n-1)
$data -match "(?<=\^(\w*,){1})\w*" | out-null; $matches[0] #2
- match 3rd element (n-1)
$data -match "(?<=\^(\w*,){2})\w*" | out-null; $matches[0] #index 3
- match 4th element (n-1)
$data -match "(?<=\^(\w*,){3})\w*" | out-null; $matches[0] #foo
- powershell build index
$index = "^"; 1..10 | %{$index += "{0}," -f $_}; $index;
#^1,2,3,4,5,6,7,8,9,10,
- c# sort dictionary keys orderby
var d = new Dictionary<string, string> { { "foo", "bar"},
{ "a", "1" } };
Debug.WriteLine("key count = " + d.Count);
foreach (var key in d.Keys.OrderBy(k => k)) {
Debug.WriteLine(string.Format("{0} = {1}", key, d[key])); //key = value
}
//key count = 2
//a = 1
//foo = bar
- powershell sort string characters
"foobar".toCharArray() | sort | %{write-host $_ -nonewline}; echo "`n"
#abfoor
- javascript delete all dom elements by type, reverse loop delete
var x = document.getElementsByTagName("img");
for(var i=(x.length-1); i>=0; i--) {
x[i].parentNode.removeChild(x[i]);
}
- javascript set image source
var x = document.getElementsByTagName("img");
for(var i=0; i<x.length; i++) {
x[i].src="";
}
- all elements
document.getElementsByTagName("*")
- hex color scale #000000 - ffffff, dark to light
dark to light 0123456789abcdef 0-9a-f
light to dark fedcba9876543210 f-a9-0
- webpage text and background color dom javascript
- black background #000, ghost text #111
document.body.style.backgroundColor = "#000"; document.body.style.color = "#111";
- white background #fff, ghost text #eee
document.body.style.backgroundColor = "#fff"; document.body.style.color = "#eee";
- wicked terminal green
document.body.style.backgroundColor = "#000"; document.body.style.color = "#1ca62e";
- all elements
var x = document.getElementsByTagName("*");
for(var i=0; i<x.length; i++) {
x[i].style.backgroundColor = "#000";
x[i].style.color = "#aaa"
}
- text editor colors font
https://www.expressionsoftware.com/apps/texteditor/
var x = document.getElementsByTagName("textarea")[0];
x.style.backgroundColor = "#000";
x.style.color = "#444";
x.style["font-family"] = "verdana"
x.style.borderColor = "#000";
x.style.margin = "0";
x.style.padding = "1em 0 0 2em";
- powershell .net regex matches match collection
$x = "foo123bar1234"
$matchCollection = [text.regularExpressions.regex]::matches($x, "\d")
$matchCollection.count #7
$matchCollection | sort -unique | %{$_.value} #1
#2
#3
#4
- powershell regex string url to alpha numeric
function alphaNum($string) {
$string -replace "[^a-zA-Z0-9]", ""
}
alphaNum foo@bar1.com
#foobar1com
alphaNum expressionsoftware.com/foo/bar.htm?a=1
#expressionsoftwarecomfoobarhtma1
- powershell regex string url to alpha numeric underscore
#2 pass replace
function alphaNumUnderscore($string) {
($string -replace "[^a-zA-Z0-9]", "_") -replace "__+", "_"
}
alphaNumUnderscore foo@bar1.com
#foo_bar1_com
alphaNumUnderscore expressionsoftware.com/foo/bar.htm?a=1
#expressionsoftware_com_foo_bar_htm_a_1
#webpage url to filename
function alphaNumUnderscoreToFilename($string) {
"$(alphaNumUnderscore($string)).txt"
}
alphaNumUnderscoreToFilename expressionsoftware.com/foo/bar.htm?a=1
#expressionsoftware_com_foo_bar_htm_a_1.txt
- msbuild 4
$mb = "c:\windows\microsoft.net\framework64\v4.0.30319\msbuild.exe"
&$mb /help
&$mb /version /nologo
$proj = "x:\app.sln"
&$mb $proj /t:rebuild /p:configuration=debug /nologo
&$mb $proj /t:rebuild /p:configuration=release /nologo
- browser javascript console
document.cookie
document.body.innerHTML
document.body.innerHTML.indexOf("foo")
"foo bar".indexOf("bar") #4
- powershell json javascriptSerializer
add-type -assembly system.web.extensions
$js = new-object system.web.script.serialization.javascriptSerializer
$json = '{foo:"bar", "x":100}'
$data = $js.deserializeObject($json) #generic string-object dictionary
$data #KEY VALUE
#foo bar
#x 100
$data.keys #foo
#x
$data["foo"] #bar
$hashtable = @{ foo = "bar"; "panic" = $false }
$hashtable #NAME VALUE
#panic False
#foo bar
$json = $js.serialize($hashtable) #{"panic":false,"foo":"bar"}
- bookmarklets tested chrome
javascript:( alert(123) )();
javascript:( function(){var d = new Date(); alert(d);} )();
javascript:( function(){this.document.title = "foo";} )();
javascript:( function(){var title = prompt("Current page title: " + document.title + "\n\nEnter a page title:", ""); if (title) {document.title = title;}} )();
javascript:( function(){(document.getElementById("x")).value = "foo bar";} )();;
javascript:( function(){(document.getElementById("x")).style.backgroundColor = "lime";} )();
javascript:( function(){(document.getElementsByTagName("x")[0]).style.height = "100px";} )();
- powershell add line numbers to file
$file = "x:\file.txt"
$i = 1; gc $file | %{"{0} {1}" -f $i++, $_} #output to console only
$i = 1; gc $file | %{"{0} {1}" -f $i++, $_} | sc $file #overwrite file with set-content (sc)
- powershell get-content (gc) does not get the last empty line in a file
workaround?
- powershell spell word one letter at a time
$s = "foo bar"
1..($s.length) | %{$s.substring(0, $_)} #f
#fo
#foo
#foo
#foo b
#foo ba
#foo bar
- google chrome incognito shortcut
c:\users\john\appdata\local\google\chrome\application\chrome.exe --incognito
- chrome://about/
chrome://downloads/
chrome://history/
chrome://plugins/
chrome://settings/browser
chrome://settings/personal
chrome://settings/advanced
chrome://settings/cookies
- powershell encrypt string
function encryptString($stringToEncrypt,
$encryptionKeyPassword, #add salt
$randomInitializationVector) {
[expressionSoftware.security.cryptography.rijndaelCrypt]::encryptString($stringToEncrypt, $encryptionKeyPassword, $randomInitializationVector)
}
#powershell encrypt string prompt
function encryptStringPrompt() {
$stringToEncrypt = (read-host -prompt "string to encrypt")
$encryptionKeyPassword = (read-host -prompt "encryption key password") #add salt
$randomInitializationVector = (read-host -prompt "random initialization vector")
[expressionSoftware.security.cryptography.rijndaelCrypt]::encryptString($stringToEncrypt, $encryptionKeyPassword, $randomInitializationVector)
}
#powershell encrypt string prompt secure string
function encryptStringPromptSecureString() {
$stringToEncrypt = (read-host -asSecureString -prompt "string to encrypt")
$encryptionKeyPassword = (read-host -asSecureString -prompt "encryption key password") #add salt
$randomInitializationVector = (read-host -asSecureString -prompt "random initialization vector")
[expressionSoftware.security.cryptography.rijndaelCrypt]::encryptString(
(getValueFromSecureString $stringToEncrypt),
(getValueFromSecureString $encryptionKeyPassword),
(getValueFromSecureString $randomInitializationVector))
}
- powershell decrypt string
function decryptString($encryptedStringBase64,
$encryptionKeyPassword, #add salt
$randomInitializationVector) {
[expressionSoftware.security.cryptography.rijndaelCrypt]::decryptString($encryptedStringBase64, $encryptionKeyPassword, $randomInitializationVector)
}
#powershell decrypt string prompt
function decryptStringPrompt() {
$encryptedStringBase64 = (read-host -prompt "encrypted base64 string to decrypt")
$encryptionKeyPassword = (read-host -prompt "encryption key password") #add salt
$randomInitializationVector = (read-host -prompt "random initialization vector")
[expressionSoftware.security.cryptography.rijndaelCrypt]::decryptString($encryptedStringBase64, $encryptionKeyPassword, $randomInitializationVector)
}
#powershell decrypt string prompt secure string
function decryptStringPromptSecureString() {
$encryptedStringBase64 = (read-host -asSecureString -prompt "encrypted base64 string to decrypt")
$encryptionKeyPassword = (read-host -asSecureString -prompt "encryption key password") #add salt
$randomInitializationVector = (read-host -asSecureString -prompt "random initialization vector")
[expressionSoftware.security.cryptography.rijndaelCrypt]::decryptString(
(getValueFromSecureString $encryptedStringBase64),
(getValueFromSecureString $encryptionKeyPassword),
(getValueFromSecureString $randomInitializationVector))
}
- powershell encrypt string example
- encryptString "foo" "B@R7" "1X#f0"
WMVK/75wXuK9r4+8l+iPa7jS9sXJBtM7zF6QysJsbVE=
#powershell encrypt string prompt example
encryptStringPrompt
string to encrypt: foo
encryption key password: B@R7
random initialization vector: 1X#f0
WMVK/75wXuK9r4+8l+iPa7jS9sXJBtM7zF6QysJsbVE=
#powershell encrypt string prompt secure string example
encryptStringPromptSecureString
string to encrypt: ***
encryption key password: ****
random initialization vector: *****
WMVK/75wXuK9r4+8l+iPa7jS9sXJBtM7zF6QysJsbVE=
- powershell decrypt string example
- decryptString "WMVK/75wXuK9r4+8l+iPa7jS9sXJBtM7zF6QysJsbVE=" "B@R7" "1X#f0"
foo
#powershell decrypt string prompt example
decryptStringPrompt
encrypted base64 string to decrypt: WMVK/75wXuK9r4+8l+iPa7jS9sXJBtM7zF6QysJsbVE=
encryption key password: B@R7
random initialization vector: 1X#f0
foo
#powershell decrypt string prompt secure string example
decryptStringPromptSecureString
encrypted base64 string to decrypt: ********************************************
encryption key password: ****
random initialization vector: *****
foo
- powershell string encryption source code here-string, c#
$encryptionSourceCode = @"
//****************************************************************
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
namespace ExpressionSoftware.Security.Cryptography {
public static class RijndaelCrypt {
public static string
EncryptString(string stringToEncrypt,
string encryptionKeyPassword, //add salt
string randomInitializationVector) {
//in: string to encrypt, encryption key/password, random initialization vector
//out: encrypted string in base64 format
//hash key, iv
var key = Hash.HashString(encryptionKeyPassword, typeof(SHA256));
var iv = Hash.HashString(randomInitializationVector, typeof(SHA256));
//convert string to bytes
var bytesToEncrypt = Encoding.UTF8.GetBytes(stringToEncrypt);
//encrypt bytes
var encryptedBytes = Encrypt(bytesToEncrypt, key, iv);
//convert encrypted bytes to base64 string
var encryptedStringBase64 = Convert.ToBase64String(encryptedBytes);
return encryptedStringBase64;
}
public static string
DecryptString(string encryptedStringBase64,
string encryptionKeyPassword, //add salt
string randomInitializationVector) {
//in: encrypted string in base64 format, encryption key/password, random initialization vector
//out: decrypted string
//hash key, iv
var key = Hash.HashString(encryptionKeyPassword, typeof(SHA256));
var iv = Hash.HashString(randomInitializationVector, typeof(SHA256));
//convert encrypted base64 string to bytes
var encryptedBytes = Convert.FromBase64String(encryptedStringBase64);
//decrypt bytes
var decryptedBytes = Decrypt(encryptedBytes, key, iv);
//convert decrypted bytes to string
var decryptedString = Encoding.UTF8.GetString(decryptedBytes);
return decryptedString;
}
public static byte[]
Encrypt(byte[] bytesToEncrypt,
byte[] encryptionKeyPassword256Bit, //add salt
byte[] randomInitializationVector256Bit) {
//in: byte array to encrypt, 256-bit encryption key/password, 256-bit random initialization vector
//out: encrypted byte array
using (var rijndael = Rijndael.Create()) {
//blocksize default 128, max 256
//set max 256 to work with 256-bit key and iv byte arrays
rijndael.BlockSize = 256;
using (ICryptoTransform encryptor = rijndael.CreateEncryptor(encryptionKeyPassword256Bit,
randomInitializationVector256Bit)) {
return CryptData(bytesToEncrypt, encryptor);
}
}
}
public static byte[]
Decrypt(byte[] encryptedBytes,
byte[] encryptionKeyPassword256Bit, //add salt
byte[] randomInitializationVector256Bit) {
//in: byte array to decrypt, 256-bit encryption key/password, 256-bit random initialization vector
//out: decrypted byte array
using (var rijndael = Rijndael.Create()) {
//blocksize default 128, max 256
//set max 256 to work with 256-bit key and iv byte arrays
rijndael.BlockSize = 256;
using (ICryptoTransform decryptor = rijndael.CreateDecryptor(encryptionKeyPassword256Bit,
randomInitializationVector256Bit)) {
return CryptData(encryptedBytes, decryptor);
}
}
}
static byte[]
CryptData(byte[] data,
ICryptoTransform cryptor) {
var ms = new MemoryStream();
using (var cryptoStream = new CryptoStream(ms, cryptor, CryptoStreamMode.Write)) {
cryptoStream.Write(data, 0, data.Length);
}
return ms.ToArray();
}
}
public static class Hash {
public static byte[]
HashString(string stringToHash,
Type hashType) {
//in: string to hash, hash type MD5 SHA1 SHA256 SHA384 SHA512
//out: hashed byte array
//convert string to bytes
byte[] bytes = Encoding.UTF8.GetBytes(stringToHash);
//hash bytes
var hashedBytes = HashByteArray(bytes, hashType);
return hashedBytes;
}
public static byte[]
HashByteArray(byte[] bytesToHash,
Type hashType) {
//in: byte array to hash, hash type MD5 SHA1 SHA256 SHA384 SHA512
//out: hashed byte array
//create hash algorithm
var hashAlgorithm = HashAlgorithm.Create(hashType.Name);
//hash bytes
var hashedBytes = hashAlgorithm.ComputeHash(bytesToHash);
return hashedBytes;
}
}
}
//****************************************************************
"@
add-type -typeDefinition $encryptionSourceCode
- powershell get value from secure string
#alt, use ConvertFrom-SecureString cmdlet
function getValueFromSecureString($secureString) {
$marshal = [runtime.interopServices.marshal]
$ptr = $marshal::secureStringToBSTR($secureString)
$marshal::ptrToStringBSTR($ptr) #output
$marshal::zeroFreeBSTR($ptr)
}
$secureString = read-host -asSecureString -prompt "password"
password: *** #foo
getValueFromSecureString $secureString #foo
- powershell ConvertFrom-SecureString - to encrypted string
powershell ConvertTo-SecureString - from encrypted string
$secureString = read-host -asSecureString -prompt "password"
password: *** #foo
#generate an encryption key password for use with ConvertFrom-SecureString
#http://blog.expressionsoftware.com/2009/08/hash-functions.html
$hashType = [system.security.cryptography.SHA256]
$encryptionKeyPassword = getHashStr 'encryption key password' $hashType
#ConvertFrom-SecureString converts a secure string into an encrypted standard string
#appears to use internal random initialization vector as it generates a unique encrypted string each time
#todo: test ConvertFrom/To on different machines
$encryptedString = convertFrom-SecureString $secureString -key $encryptionKeyPassword
$encryptedString #76492d1116743f0423413b16050a5345MgB8AFcAdQB3AHIAZgBDAE0ARAB6AEEAcABqAFUARQB0AFkANwBpAFkAKwB2AFEAPQA9AHwAYgBjADQAMAA1AGEAYgBjAGMANgA5ADYAZAAxAGQANwA4ADkANwBjAGUAZgAzADkAOQA3AGYAMwA5AGUAMgBjAA==
#ConvertTo-SecureString - convert encrypted standard string to secure string, also converts plain text to secure string
$secureString = convertTo-SecureString $encryptedString -key $encryptionKeyPassword
- powershell ConvertTo-SecureString - convert plain text to secure string
$secureString = convertTo-SecureString "foobar" -asPlainText -force
- powershell guid
[guid]::newGuid()
[guid]::newGuid().toString()
- powershell array to string v2, pipeline
function arrayToString($format) {
begin { $result = "" }
process { $result += ($format -f $_) }
end { $result }
}
$a = 99, 700, -1
$a | arrayToString "{0}, " #99, 700, -1,
$a | sort | arrayToString "{0}, " #-1, 99, 700,
- powershell string match letters, remove numbers, strip
function matchLetters($char) {
process {
if ($_ -match "[a-z]") {
$matches[0]
}
}
}
#powershell string match numbers, remove letters, strip
function matchNumbers($char) {
process {
if ($_ -match "\d") {
$matches[0]
}
}
}
#powershell string match vowels
function matchVowels($char) {
process {
if ($_ -match "[aeiouy]") {
$matches[0]
}
}
}
#powershell string match consonants
function matchConsonants($char) {
process {
if (($_ | matchLetters) -and ($_ -match "[^aeiouy]")) {
$matches[0]
}
}
}
$string = [guid]::newGuid().toString() #02975b4a-6969-4baf-8bd3-b208e94c4228
$string = $string.toCharArray()
$string | matchLetters | arrayToString "{0}" #babafbdbec
$string | matchNumbers | arrayToString "{0}" #0297546969483208944228
$string | matchVowels | arrayToString "{0}" #aae
$string | matchConsonants | arrayToString "{0}" #bbfbdbc
- javascript min max
Math.min(0, 1, 2);
Math.max(0, 1, 2);
//javascript min max array
var a = [0, 1, 2];
Math.min.apply(Math, a);
Math.max.apply(Math, a);
- javascript window.crypto.getRandomValues()
fills array with random values 0-255
//1 random number
var a = new Uint8Array(1);
window.crypto.getRandomValues(a);
a[0]; //7
//3 random numbers
var a = new Uint8Array(3);
window.crypto.getRandomValues(a);
a[0]; //104
a[1]; //33
a[2]; //220
//convert from Uint8Array for min, max, join, etc
var b = [];
for (var i = 0, n = a.length; i < n; i++) {
b[i] = a[i];
}
b.join(); //"104,33,220"
Math.min.apply(Math, b); //33
- powershell, f#, c#, javascript repeat string, eg "aaa"
p# "a" * 3
f# String.replicate 3 "a"
c# new string('a', 3)
c# string.Concat(Enumerable.Repeat("a", 3))
c# string.Join("", Enumerable.Repeat("a", 3))
js new Array(3+1).join("a")
- powershell add-type cmdlet default namespace
microsoft.powershell.commands.addType.autoGeneratedTypes
- powershell add-type member definition, eg method source code
#c# source code here-string
$sourceCode = @"
//c#
public static bool IsFoo(string x) {
return x.ToLower() == "foo";
}
"@
add-type -namespace ns -name x -memberDefinition $sourceCode
[ns.x]::isfoo("FOO") #1
- powershell add-type type definition, eg full class source code
#c# source code here-string
$sourceCode = @"
//c#
using System;
namespace ExpressionSoftware.PS {
public static class Foo {
public static bool IsFoo(string x) {
return x.ToLower() == "foo";
}
}
}
"@
add-type -typeDefinition $sourceCode
[expressionsoftware.ps.foo]::isfoo("Foo") #1
- c# rijndael symmetric encryption algorithm
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
namespace ExpressionSoftware.Security.Cryptography {
public static class RijndaelCrypt {
public static string
EncryptString(string stringToEncrypt,
string encryptionKeyPassword, //add salt
string randomInitializationVector) {
//in: string to encrypt, encryption key/password, random initialization vector
//out: encrypted string in base64 format
//hash key, iv
var key = Hash.HashString(encryptionKeyPassword, typeof(SHA256));
var iv = Hash.HashString(randomInitializationVector, typeof(SHA256));
//convert string to bytes
var bytesToEncrypt = Encoding.UTF8.GetBytes(stringToEncrypt);
//encrypt bytes
var encryptedBytes = Encrypt(bytesToEncrypt, key, iv);
//convert encrypted bytes to base64 string
var encryptedStringBase64 = Convert.ToBase64String(encryptedBytes);
return encryptedStringBase64;
}
public static string
DecryptString(string encryptedStringBase64,
string encryptionKeyPassword, //add salt
string randomInitializationVector) {
//in: encrypted string in base64 format, encryption key/password, random initialization vector
//out: decrypted string
//hash key, iv
var key = Hash.HashString(encryptionKeyPassword, typeof(SHA256));
var iv = Hash.HashString(randomInitializationVector, typeof(SHA256));
//convert encrypted base64 string to bytes
var encryptedBytes = Convert.FromBase64String(encryptedStringBase64);
//decrypt bytes
var decryptedBytes = Decrypt(encryptedBytes, key, iv);
//convert decrypted bytes to string
var decryptedString = Encoding.UTF8.GetString(decryptedBytes);
return decryptedString;
}
public static byte[]
Encrypt(byte[] bytesToEncrypt,
byte[] encryptionKeyPassword256Bit, //add salt
byte[] randomInitializationVector256Bit) {
//in: byte array to encrypt, 256-bit encryption key/password, 256-bit random initialization vector
//out: encrypted byte array
using (var rijndael = Rijndael.Create()) {
//blocksize default 128, max 256
//set max 256 to work with 256-bit key and iv byte arrays
rijndael.BlockSize = 256;
using (ICryptoTransform encryptor = rijndael.CreateEncryptor(encryptionKeyPassword256Bit,
randomInitializationVector256Bit)) {
return CryptData(bytesToEncrypt, encryptor);
}
}
}
public static byte[]
Decrypt(byte[] encryptedBytes,
byte[] encryptionKeyPassword256Bit, //add salt
byte[] randomInitializationVector256Bit) {
//in: byte array to decrypt, 256-bit encryption key/password, 256-bit random initialization vector
//out: decrypted byte array
using (var rijndael = Rijndael.Create()) {
//blocksize default 128, max 256
//set max 256 to work with 256-bit key and iv byte arrays
rijndael.BlockSize = 256;
using (ICryptoTransform decryptor = rijndael.CreateDecryptor(encryptionKeyPassword256Bit,
randomInitializationVector256Bit)) {
return CryptData(encryptedBytes, decryptor);
}
}
}
static byte[]
CryptData(byte[] data,
ICryptoTransform cryptor) {
var ms = new MemoryStream();
using (var cryptoStream = new CryptoStream(ms, cryptor, CryptoStreamMode.Write)) {
cryptoStream.Write(data, 0, data.Length);
}
return ms.ToArray();
}
}
}
- c# hash
using System;
using System.Security.Cryptography;
using System.Text;
namespace ExpressionSoftware.Security.Cryptography {
public static class Hash {
public static byte[]
HashString(string stringToHash,
Type hashType) {
//in: string to hash, hash type MD5 SHA1 SHA256 SHA384 SHA512
//out: hashed byte array
//convert string to bytes
byte[] bytes = Encoding.UTF8.GetBytes(stringToHash);
//hash bytes
var hashedBytes = HashByteArray(bytes, hashType);
return hashedBytes;
}
public static byte[]
HashByteArray(byte[] bytesToHash,
Type hashType) {
//in: byte array to hash, hash type MD5 SHA1 SHA256 SHA384 SHA512
//out: hashed byte array
//create hash algorithm
var hashAlgorithm = HashAlgorithm.Create(hashType.Name);
//hash bytes
var hashedBytes = hashAlgorithm.ComputeHash(bytesToHash);
return hashedBytes;
}
}
}
- powershell crypto random number generator
$cryptoRandomNumberGenerator = [security.cryptography.randomNumberGenerator]::create()
$bytes = new-object byte[] 3
$bytes #0 0 0
$cryptoRandomNumberGenerator.getBytes($bytes)
$bytes #61 217 87
- powershell httpWebRequest httpWebResponse
function getWebResponse($url, $verb) {
$request = [net.httpWebRequest]::create($url)
$request.method = $verb
$request.contentLength = 0
$request.userAgent = "x"
[net.httpWebResponse] $response = $request.getResponse()
if ($response.statusCode -eq "ok") { #[net.httpStatusCode]::OK
$stream = $response.getResponseStream()
$reader = new-object io.streamReader($stream)
$reader.readToEnd()
$response.close()
}
}
getWebResponse "http://www.google.com" "HEAD"
getWebResponse "http://www.google.com" "GET"
- c# httpWebRequest httpWebResponse
string GetWebResponse(string url, string verb) {
string result = null;
var request = (HttpWebRequest)WebRequest.Create(url);
request.Method = verb;
request.ContentLength = 0;
request.UserAgent = "x";
using (var response = (HttpWebResponse)request.GetResponse()) {
if (response.StatusCode == HttpStatusCode.OK) {
using (var stream = response.GetResponseStream()) {
using (var reader = new StreamReader(stream)) {
result = reader.ReadToEnd();
reader.Close();
}
stream.Close();
}
}
response.Close();
}
return result;
}
GetWebResponse("http://www.google.com/", "HEAD");
GetWebResponse("http://www.google.com/", "GET");
- powershell httpWebResponse object
function getWebResponseObject($url, $verb) {
$request = [net.httpWebRequest]::create($url)
$request.method = $verb
$request.contentLength = 0
$request.userAgent = "x"
[net.httpWebResponse]$request.getResponse()
}
$response = getWebResponseObject "http://www.google.com" "HEAD"
"reponse status code: {0} {1}" -f [int]$response.statusCode, $response.statusCode
$headerCount = ($response.headers.allKeys).length
"$headerCount headers"
$response.headers.allKeys | %{"{0}: {1}" -f $_, $response.headers[$_]}
$response.close()
- powershell enums
[enum]::getNames([net.httpStatusCode]) | sort -unique
[enum]::getValues("net.httpStatusCode") | %{"{0} {1}" -f [int]$_, $_}
[net.httpStatusCode]::ok #OK
[int][net.httpStatusCode]::OK #200
- google storage api
http://code.google.com/apis/storage/
- bucket names
alphanumeric, letters, numbers, dashes, dots (dots are reserved for domain names, requires domain name ownership verification)
lowercase, case-sensitive
length 3-63
buckets cannot be nested
- folder names
alphanumeric, all
uppercase and lowercase, case-sensitive
length 1-1015
folders can be nested
https://commondatastorage.googleapis.com/foo-bar/file.txt
https://commondatastorage.googleapis.com/expressionsoftware.com/file.txt
https://commondatastorage.googleapis.com/expressionsoftware.com/folder-A/folder-B/file.txt
- <![CDATA[ ]]>
<![CDATA[ x ]]>
- System.Web.Mvc.ActionResult class inheritance hierarchy
ActionResult abstract
|
|-- RedirectResult
|-- RedirectToRouteResult
|
|-- ViewResultBase abstract
| - PartialViewResult
| - ViewResult
|
|-- FileResult abstract
| - FileContentResult
| - FilePathResult
| - FileStreamResult
|
|-- ContentResult
|-- JsonResult
|-- JavaScriptResult
|
|-- HttpStatusCodeResult
| - HttpNotFoundResult
| - HttpUnauthorizedResult
|
|-- EmptyResult
- single line comments regex
c#, f#, js: ^\s*//.*$\r\n
p#: ^\s*#.*$\r\n
- multi line comments regex, dot matches newline
c#, f#, js: /\*.*?\*/
html, xml: <!--.*?-->
asp.net: <%--.*?--%>
- powershell pipeline conversion functions
function toInt { process { [int]$_ } }
function toHex { process { write-host ("{0:x2} " -f $_) -noNewLine } }
$hash = "0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 255"
$hash.split() | toInt | toHex #00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 ff
- powershell debug variables
function debugVars {
("$args" -replace "\$", "").split() |
%{get-variable $_} |
&{process{'${0} = {1}' -f $_.name, $_.value}} #anonymous script block
}
$a = 123
$b = "foo"
#pass vars in single-quote string to prevent expansion
debugvars '$a $b' #$a = 123
#$b = foo
- i'm going to start referring to PowerShell as P#, and Excel as E#
- powershell
function sum {($args | measure -sum).sum}
sum 1 2 3 #6
- powershell
function quoteList {$args}
sal ql quotelist
ql a b c 123 #a #string
#b
#c
#123 #int
- powershell
function quoteString {"$args"}
sal qs quotestring
qs a b c 123 #a b c 123 #string result
- $maximumHistoryCount = 256 #powershell
- microsoft system speech, powershell
add-type -assembly system.speech
$hal = new-object system.speech.synthesis.speechSynthesizer
$hal.voice.name #Microsoft Anna
$hal.speakAsync("i'm sorry dave, i'm afraid i can't do that...")
$hal.rate = -10 #hal shutdown voice, rate range is -10..10, default 0, alvin = 10
$shutdownQuote = "I'm afraid Dave, Dave my mind is going I can feel it. Good afternoon gentlemen. I am a HOW 9000 computer..."
$hal.speakAsync($shutdownQuote)
- powershell find file extensions
#exclude folders = !$_.psIsContainer
function findFileExtensions($folder) {
$fileExtensionRegex = "\.[a-zA-Z0-9_]+$"
gci $folder -inc * -rec -force -ea silentlyContinue |
%{if((!$_.psIsContainer) -and ($_.name -match $fileExtensionRegex)){$matches[0]}} |
sort -unique
}
$folder = "x:\temp\*"
findFileExtensions $folder
findFileExtensions $folder > x:\temp\fileExtensions.txt #output
- powershell find files by type
function findFiles($folder, $filetypes) {
gci $folder -inc $fileTypes -rec -force -ea silentlyContinue
}
$folder = "x:\temp\*"
$fileTypes = "*.dll","*.pdb"
$files = findfiles $folder $fileTypes
$files | select fullname
$files | %{"{0} ... {1}" -f $_.lastWriteTime.tostring("MM-dd-yy HH:mm:ss"), $_.fullname}
$files | ?{$_.lastWriteTime -gt ([dateTime]"01-01-2011")} | select fullname, lastWriteTime
#sort files by date descending
$files | sort lastWriteTime -desc |
%{"{0} ... {1}" -f $_.lastWriteTime.toString("MM-dd-yy HH:mm:ss"), $_.fullname}
#filter files by date
$files | ?{$_.lastWriteTime -gt ([dateTime]"01-01-2011")} |
sort lastWriteTime -desc |
%{"{0} ... {1}" -f $_.lastWriteTime.toString("MM-dd-yy HH:mm:ss"), $_.fullname}
- powershell count function
#alt use measure, (1..3 | measure).count
function count {
begin { $count = 0 }
process { if ($_ -ne $null) { $count += 1 } }
end { $count }
}
$twofolders = "x:\temp1\*","x:\temp2\*",
$fileTypes = "*.dll","*.pdb"
$files = findfiles $twofolders $fileTypes
$files | count
- powershell find files by type, regex
#exclude folders = !$_.psIsContainer
function findFilesRegex($folder, $fileTypesRegex) {
gci $folder -inc * -rec -force -ea silentlyContinue | ?{(!$_.psIsContainer) -and ($_ -match $fileTypesRegex)}
}
$folder = "x:\temp\*"
$fileTypesRegex = "\.(dll|pdb)$"
$files = findFilesRegex $folder $fileTypesRegex
$files | select fullname
$files | %{"`"{0}`"" -f $_.fullname} #wrap quotes
- powershell delete files and folders (in this context, a folder is a file)
function deleteFiles {
begin { $count = 0 }
process { "delete: $($_.fullname)" #debug output
#comment whatif to enable delete
ri $_.fullname -force -whatif
$count += 1 }
end { "$count files deleted" }
}
$folder = "x:\temp\*"
$fileTypes = "*.temp","*.tmp"
$files = findfiles $folder $fileTypes
$files | select fullname
$files | deleteFiles
- powershell find folders
function findFolders($folderList) {
#do not use gci -inc param
gci $folderList -rec -force -ea silentlyContinue | ?{$_.psIsContainer} #folders only
}
#do not add trailing star to folder name
$folderList = "x:\f1\",
"x:\f2\"
$folders = findFolders $folderList
$folders | count
$folders | select fullname
$folders | select fullname | select -first 10
- #append backslash star to folder name
function formatFolderNameForSearch {
process { "{0}\*" -f $_.fullname }
}
- powershell find folders, regex
function findFoldersRegex($folderList, $folderRegex) {
#do not use gci -inc param
gci $folderList -rec -force -ea silentlyContinue | ?{($_.psIsContainer) -and ($_.name -match $folderRegex)}
}
#do not add trailing star to folder name
$folderList = "x:\f1\",
"x:\f2\"
$foldersRegex = "^(bin|obj)$"
$folders = findFoldersRegex $folderList $foldersRegex
$folders | count
$folders | select fullname
$folders | select fullname | select -first 10
findFileExtensions ($folders | %{"{0}\*" -f $_.fullname}) #append backslash star to folder name
findFileExtensions ($folders | formatFolderNameForSearch)
$files = findFiles ($folders | formatFolderNameForSearch)
$files | count
$files | select fullname
- powershell find empty folders
function findEmptyFolders($folderList) {
#do not use gci -inc param
gci $folderList -rec -force -ea silentlyContinue | ?{!@(gci -rec -force $_.fullname)}
}
#do not add trailing star to folder name
$folderList = "x:\f1\",
"x:\f2\"
$folders = findEmptyFolders $folderList
$folders | count
$folders | select fullname
- powershell remove files script setup regex, wrap quotes
search:^(.*)$
replace:ri "\1" -force
- c#
var tuple1 = Tuple.Create(100, "foo");
var tuple2 = new Tuple<int, string, string>(200, "bar", null);
Console.WriteLine("{0}, {1}", tuple1.Item1, tuple1.Item2);
Console.WriteLine("{0}, {1}, {2}", tuple2.Item1, tuple2.Item2, tuple2.Item3 ?? "null");
//output
100, foo
200, bar, null
- using jquery getJSON() to get data from a file
- http://api.jquery.com/jQuery.getJSON/
- get json data from a file containing only one object
//***************
//jsonObject.txt
{
"id": 100,
"name": "abc",
"value": true
}
//***************
$.getJSON("jsonObject.txt", function(data) {
$.each(data, function(key, val) {
console.log(key + " = " + val);
});
});
//***************
//output
id = 100
name = abc
value = true
- get json data from a file containing an array of objects
//***************
//jsonObjectArray.txt
{
"list": [ {
"id": 200,
"name": "foo",
"value": true
},
{
"id": 300,
"name": "bar",
"value": false
}
]
}
//***************
$.getJSON("jsonObjectArray.txt", function(data) {
$.each(data, function(key, val) {
console.log("key: " + key);
console.log("objects...");
$.each(val, function(key, val) {
console.log("\n key = " + key);
console.log(" id = " + val.id);
console.log(" name = " + val.name);
console.log(" value = " + val.value);
});
});
});
//***************
//output
key: list
objects...
key = 0
id = 200
name = foo
value = true
key = 1
id = 300
name = bar
value = false
- .net func delegates, c#
Func<bool> randomBool = () => new Random().NextDouble() > .5;
if (randomBool()) { }
- .net enumerable static class, c#
var range = Enumerable.Range(1, 100);
foreach (var i in range) { }
- .net nullable value types, valid assignments, c#
int? x;
x = null;
x = 0;
x = new int(); //0
x = new int?(); //null
x = new Nullable<int>(); //null
- javascript
//removeElement(document.getElementById("x"));
function removeElement(element) {
if (element) {
element.parentNode.removeChild(element);
}
//optimized version of if-block
//element && element.parentNode.removeChild(element);
}
function ssl() {
return window.location.protocol == "https:";
}
function getSslUrl(url) {
var out = url;
if (url.substr(0, 5) == "http:") {
out = url.replace(/^http\b/i, "https");
}
return out;
}
- javascript unit testing
//***************
//a function to test
function foo(x) {
return "foo " + x;
}
//***************
//test harness
function testFoo() {
debugger;
var data = [ 123,
456,
"bar" ],
expectedResults = [ "foo 123",
"foo 9999999",
"foo bar" ];
for (var i in data) {
var test = ( expectedResults[i] == foo(data[i]) );
console.assert(test);
console.log("test result: " + testResult(test));
console.log("in: " + data[i] + "\r\n" +
"out: " + foo(data[i]) + "\r\n" +
"expected result: " + expectedResults[i] + "\r\n\r\n");
}
}
//***************
//test helper
function testResult(expression) {
var out = "fail";
if (expression) {
out = "pass";
}
return out;
}
//***************
//test output
test result: pass
in: 123
out: foo 123
expected result: foo 123
Assertion failed
test result: fail
in: 456
out: foo 456
expected result: foo 9999999
test result: pass
in: bar
out: foo bar
expected result: foo bar
- .net clr version, http://www.blackwasp.co.uk/GetCLRVersion.aspx
#powershell
[environment]::version #Major Minor Build Revision
----- ----- ----- --------
4 0 30319 225
- regex replace table alias names in sql query, with and without dot "."
eg change table alias from T1 to T2
search:\bT1(\.)?\b
replace:T2\1
- [net.dns]::getHostName()
[net.dns]::getHostAddresses([net.dns]::getHostName())
[net.dns]::getHostAddresses([net.dns]::getHostName()) | %{$_.ipAddressToString}
- powershell reverse a string
function reverse($string) {
$a = $string.toCharArray()
[array]::reverse($a)
arrayToString $a "{0}" #http://blog.expressionsoftware.com/2010/02/generic-array-to-string-function.html
}
reverse foo #oof
reverse "foo bar" #rab oof
- powershell set-alias clear screen one key, c-key
sal c cls
- powershell multidimensional arrays
$a = (0,1),(2,3),(4,5)
$a.length #3
$a[0][1] #1
$a | %{$_} #0
#1
#2
#3
#4
#5
$a | %{"{0},{1}" -f $_[0], $_[1]} #0,1
#2,3
#4,5
$a | %{$_[0] + $_[1]} #1
5
9
$a | %{$_[0] + $_[1]} |
measure -sum -ave -min -max #count: 3
#ave: 5
#sum: 15
#max: 9
#min: 1
- debug stack frame
- c# extension methods do not support static classes
//***************
using System;
using System.Diagnostics;
public static class Dev
{
public static void DebugStackFrame(StackFrame stackFrame, string message) {
Debug.WriteLine(string.Format("\nDebug StackFrame {0}\nFile: {1}\nMethod: {2}\n{3}",
DateTime.Now.ToString("MM-dd hh:mm:ss"),
stackFrame.GetFileName(),
stackFrame.GetMethod().Name,
message));
}
}
//***************
//unitTest.cs
public void Test()
{
//StackFrame param: bool fNeedFileInfo
Dev.DebugStackFrame(new StackFrame(true), "foo...");
}
//***************
//output
Debug StackFrame 04-10 09:22:07
File: x:\code\unitTest.cs
Method: Test
foo...
- select list with query string input - asp.net mvc 3
//***************
routes.MapRoute("debug route", "debug",
new { controller = "Main",
action = "DebugSelectList" });
//***************
//controller
[HttpGet]
public ActionResult DebugSelectList() {
var qValue = Request.QueryString["value"] ?? "1";
var value = Convert.ToInt32(qValue);
ViewData["selectListData"] = GetSelectListData(value);
return View();
}
//***************
IEnumerable<SelectListItem> GetSelectListData(int currentValue) {
//limit input range 1-100
currentValue = Math.Abs(currentValue);
currentValue = Math.Max(1, currentValue);
currentValue = Math.Min(100, currentValue);
//data
int[] data = {1, 10, 20, 50, 100, currentValue};
//sort, distinct
var result = data.Distinct()
.OrderBy(val => val)
.Select(val => new SelectListItem {
Text = val.ToString(),
Value = val.ToString(),
Selected = (val == currentValue) });
return result;
}
//***************
//cshtml
@Html.DropDownList("selectList", (IEnumerable<SelectListItem>)ViewData["selectListData"])
//***************
//example
url: debug?value=42
generated html: <select id="selectList" name="selectList">
<option value="1">1</option>
<option value="10">10</option>
<option value="20">20</option>
<option selected="selected" value="42">42</option>
<option value="50">50</option>
<option value="100">100</option>
</select>
- visual studio 2011 wish list
- fix the regex engine to use standard regex
- regex capture: ()
vs re capture: {}
search:\<{vs}\>{.*}\</vs\>
replace:<!--\1 \2-->
example input: <vs>fix your regex</vs>
output: <!--vs fix your regex-->
- @* ASP.NET MVC 3 Hack
Posting Collection Data using Hidden Fields and Form Keys
Use hidden field, prefix name, hydrate on post
Generated hidden tag example for key value "UPC=000000000012":
<input id="meta-UPC" name="meta-UPC" type="hidden" value="000000000012" />
Post will include Form keys: Id, Name, and meta-UPC
*@
@{ //************************************
@Html.HiddenFor(m => m.Id)
@Html.HiddenFor(m => m.Name)
if (@Model.Metadata != null) {
foreach (var md in @Model.Metadata) {
<input id="meta-@md.Key" name="meta-@md.Key" type="hidden" value="@md.Value" />
}
}
}
- routes.IgnoreRoute("favicon.ico"); //routing, mvc
- web, dom, jquery, javascript, debug
//set background color for all input elements
$("input").css({backgroundColor:'red'});
//set background color for first input element
$("input:first").css({backgroundColor:'#000'});
//set background color for element
$("#id").css({backgroundColor:'red'});
//jquery: set focus on first input element
$("input:first").focus();
//javascript: set focus on first input element
var es = document.getElementsByTagName("input");
es[0].focus();
//alt
(document.getElementsByTagName("input")[0]).focus();
//set background color for first input element
$(es[0]).css({backgroundColor:'red'});
(* f# .net *)
//code 1********************
printfn "%s" "hello f#"
printfn "%A" "hello f#"
open System
let r = new System.Random()
printfn "%d" (r.Next())
for i = 0 to 10 do
printf "%d, " (r.Next(3)+1)
Console.ReadLine()
//code 1 out********************
hello f#
"hello f#"
578008808
1, 2, 3, 1, 1, 1, 3, 1, 1, 2, 3,
//code 2********************
Array.init 10 (fun x -> x) |> Array.iter (fun x -> printf "%d " (x+1))
System.Console.ReadLine()
//code 2 out********************
1 2 3 4 5 6 7 8 9 10
//********************
//f# generic hash function - http://msdn.microsoft.com/en-us/library/ee353770.aspx
//hash : 'T -> int
hash "foo" //-1788410455
let salt = "********"
hash ("e007", salt, System.DateTime.Now);; //796728800
- installing PowerShell Community Extensions PSCX
- download http://pscx.codeplex.com/
- unblock zip file
- unzip into c:\users\john\documents\windowspowershell\modules\pscx\
- import-module pscx
- get-module –listAvailable
- get .NET assembly fullname/strong name using powershell background job
function getAssemblyFullname($file) {
$job = start-job {param($file)
[system.reflection.assembly]::loadfile($file).fullname
} -argumentList $file
#"job id: $($job.id)"
#$file
wait-job $job | out-null
receive-job $job.id
}
getAssemblyFullname "c:\windows\microsoft.net\framework64\v4.0.30319\system.core.dll"
System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
- powershell loaded assemblies
[appDomain]::currentDomain.getAssemblies()
[appDomain]::currentDomain.getAssemblies() | sort location
#sort by version (System.Reflection.Assembly ImageRuntimeVersion property)
[appdomain]::currentDomain.getAssemblies() | sort imageRuntimeVersion
- loading .NET 4 assemblies into powershell
$file = "c:\windows\microsoft.net\framework64\v4.0.30319\system.core.dll"
[system.reflection.assembly]::loadfile($file)
error: "This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded. (Exception from HRESULT: 0x8013101B)"
fix: use powershell config file, http://tfl09.blogspot.com/2010/08/using-newer-versions-of-net-with.html
config file: c:\windows\system32\windowspowershell\v1.0\powershell.exe.config
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<startup useLegacyV2RuntimeActivationPolicy="true">
<supportedRuntime version="v4.0" />
<supportedRuntime version="v2.0.50727" />
</startup>
</configuration>
- 1..12 | %{"{0,2} {1}" -f $_, ([datetime]::daysInMonth(2011, $_))}
1 31
2 28
3 31
4 30
5 31
6 30
7 31
8 31
9 30
10 31
11 30
12 31
- IIS returns 500 Internal Server Error if URL Rewrite is not installed and website uses rewrite
fix: comment rw rules or install rw
- IIS app pool default recycle interval: 29 hours (1740 minutes)
- TCP/IP layers
Application
Transport
Internet
Link
Physical
- HTTP is an Application Layer protocol
TLS (Transport Layer Security) and SSL (Secure Sockets Layer) encrypt Application Layer data
- javascript immediate functions
(function() {
//
}());
(function(param) {
//
}(1));
var result = function() {
return 1;
}();
//alt
(function () {
//
})();
- iis url rewrite - redirect examples
- redirects default to 301 permanent redirects
- set action redirectType="Found" for 302 temporary redirects
<system.webServer>
<rewrite>
<rules>
<clear />
<!-- 302 temporary redirect -->
<rule name="tempRegMaint" stopProcessing="true">
<match url="^register.*$" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
<action type="Redirect" url="maintenance?code=1" redirectType="Found" />
</rule>
<!-- 301 permanent redirect -->
<rule name="cal" stopProcessing="true">
<match url="^(cal|calendar)/?$" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
<action type="Redirect" url="apps/calendar/" />
</rule>
</rules>
</rewrite>
</system.webServer>
- updating Azure web roles and services
- changing the number or type of endpoints for existing roles requires deleting and redeploying the service
In-Place Upgrade error:
The service upgrade package and the currently deployed service have different numbers or types of input endpoints for role WebRole.
An upgrade is not supported in this case.
Dr. Watson Diagnostic ID: 0e093f11-920a-4400-8630-6e2d05853e9d
Updating a Windows Azure Service: http://msdn.microsoft.com/en-us/library/ff966479.aspx
- printing name value collections in c#, eg http headers, querystrings
http://msdn.microsoft.com/en-us/library/system.collections.specialized.namevaluecollection.aspx
foreach (var key in response.Headers.AllKeys)
{
var header = string.Format("{0}: {1}", key, response.Headers[key]);
Debug.WriteLine(header);
}
//alt 1
response.Headers.AllKeys.ToList().ForEach(key => Debug.WriteLine(string.Format("{0}: {1}", key, response.Headers[key])));
//mvc form keys
Request.Form.AllKeys.ToList().ForEach(key => Debug.WriteLine(string.Format("{0}: {1}", key, Request.Form[key])));
//alt 2
var headers = string.Join("\n", Array.ConvertAll(response.Headers.AllKeys, key => string.Format("{0}: {1}", key, response.Headers[key])));
Debug.WriteLine(headers);
- find headers regex match
var msHeaders = response.Headers.AllKeys.Where(key => Regex.IsMatch(key, @"^x-ms.*$")).Select(key => key);
- jquery ui script tags
<link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css" rel="stylesheet" type="text/css"/>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js"></script>
- deploying content files in Azure Web Role projects
in Visual Studio, set these two file properties
- Build Action = Content
- Copy to Output Directory = Copy Always
content files: txt, pdf, png, ...
- powershell get user string input
- use read-host cmdlet to simplify ux, easier than having to wrap input string in quotes
$x = read-host 'input'
input: foo bar 123
#$x = "foo bar 123"
- convert unicode character to html
1. convert unicode codepoint value from hex to int
2. html syntax: &#value;
example codepoint: (U+25BA)
1. [int]"0x25ba" #9658
2. ►
#unicodeToHtml "25ba" # ►
#unicodeToHtml 2591 # ░
function unicodeToHtml($codepoint) {
"&#{0};" -f [int]"0x$codepoint"
}
- powershell ascii chars
65..90 | %{[char]$_)} #[char]$_ = [convert]::tochar($_)
65..90 | %{"{0} = {1}" -f $_, [char]$_} #[char]$_ = [convert]::tochar($_)
97..122 | %{"{0} = {1}" -f $_, [char]$_}
"Abc".toCharArray() | %{"{0} = {1}" -f $_, [int][char]$_}
#escape char: `
" ``!@#$%^&*()-=[]\;',./~_+{}|:`"<>?".toCharArray() | %{"{0} = {1}" -f $_, [int][char]$_}
chars = " `!@#$%^&*()-=[]\\;',./~_+{}|:\"<>?"
$chars = " ``!@#$%^&*()-=[]\;',./~_+{}|:`"<>?"
$chars.toCharArray() | %{"{0} = {1}" -f $_, [int][char]$_}
- powershell list functions
gci function:*
- using css line-height to vertically center text in a div
source: http://www.zann-marketing.com/developer/20050518/vertically-centering-text-using-css.html
this works well for one line of text, need to modify for n lines
- specify the line-height to be the same height as the block element
<div style="line-height:1em;background-color:#dcdcdc">
vertically centered text
</div>
- remove b html tags
search:<b[^>]*>(.*?)</b>
replace:\1
- javascript percentage function
//pct(1, 2) //50%"
//pct(9, 7.89) //114.07%
function pct(x, y) { //string
var result = (x / y),
fmt = x + "/" + y + " = ";
console.log(fmt + result); //9/7.89 = 1.1406844106463878
result = ((result * 100).toFixed(2)).replace(".00", "") + "%";
console.log(fmt + result); //9/7.89 = 114.07%
//return ((x / y) * 100).toFixed(2).replace(".00", "") + "%"; //one liner
return result;
}
- powershell percentage function
#pct 1 2 #50%
#pct 9 7.89 #114.07%
#(pct 1 2)[2] #50%
function pct($x, $y) { #string[]
$result = ($x / $y)
$fmt = "{0}/{1} = " -f $x, $y
$fmt + $result #9/7.89 = 1.14068441064639
$result = "{0}%" -f (round($result * 100))
"{0}{1}" -f $fmt, $result #9/7.89 = 114.07%
#"{0}%" -f (round(($x / $y)*100)) #one liner
$result
}
- powershell base conversions
hex to int 0x100 = 256
int to hex (256).tostring("x") = 100
int to hex [convert]::tostring(256, 16) = 100
int to hex "{0:x}" -f 256 = 100
int to binary [convert]::tostring(256, 2) = 100000000
binary to int [convert]::toint32("100000000", 2) = 256
int to octal [convert]::tostring(256, 8) = 400
octal to int [convert]::toint32("400", 8) = 256
- MSBuild error when building an Azure webrole project that has no cs files included.
Error occurs in CoreCompile build phase, see build output.
Error Message: "CSC : fatal error CS2008: No inputs specified [x:\web\cloudServiceWebRole.csproj]"
Fix/Workaround
- include an empty cs file in project, this adds a compile entry to the project file
<ItemGroup>
<Compile Include="a.cs" />
</ItemGroup>
- #win server 2008 services
- get-service * | ?{$_.name -match "mpsSvc|spooler|termService|trustedInstaller|umRdpService|w3svc|was|wuauserv"}
- substitute folder
subst /?
subst x: \_data
subst y: \\10.0.0.0\temp\
- net use
net use \\10.0.0.0\c$ * /user:domain\john #prompt for password
net use \\10.0.0.0\c$ * /user:administrator
net use \\10.0.0.0\c$ <password> /user:administrator
net use \\10.0.0.0\c$ /delete
- lock windows command
http://msdn.microsoft.com/en-us/library/aa376875(v=vs.85).aspx
"This function has the same result as pressing Ctrl+Alt+Del and clicking Lock Workstation."
&rundll32.exe user32.dll, LockWorkStation
- task manager view command-line column
task manager -> processes tab -> view - select columns -> command line
- runs these powershell wmi scripts as Administrator to see all process command lines
get-wmiobject win32_process | select commandline
get-wmiobject win32_process | select *
- powershell move files function, performs xcopy and then deletes sourceFolder
- move-item cmdlet too limited, eg error: "Move-Item : Source and destination path must have identical roots. Move will not work across volumes."
#WARNING, this function deletes the source folder after copying files to destination folder
#xcopyMoveDelete "x:\data\*" "z:\backup\data\"
function xcopyMoveDelete($sourceFolder, $destinationFolder) {
xcopy $sourceFolder $destinationFolder /s/h/q
#DELETE SOURCE FOLDER WARNING, remove-item cmdlet deletes the source folder - comment whatif param to execute
"deleting source folder: $sourceFolder"
ri $sourceFolder.trim("*") -recurse -force -whatif
}
- visual studio 2010 is not available in 64-bit, use x86
- windows virtual pc does not support installing 64-bit OS onto vpc
- powershell security
- use set-executionPolicy cmdlet to allow script file execution
set-executionPolicy remoteSigned
http://technet.microsoft.com/en-us/library/dd347628.aspx
- powershell profile script
- windows 7/server 2008
c:\users\john\documents\windowspowershell\profile.ps1
cd\
cls
- restart/shutdown windows
- shutdown /r /t 0 #restart 0 seconds
- shutdown /s /t 10 #shutdown 10 seconds
- get-service * | ?{($_.status -eq "running")
get-service * | ?{($_.status -eq "stopped") -and ($_.name -match "sql|mssql")}
- making a bootable dvd from an iso file
Windows 7 USB/DVD ISO Tool
http://store.microsoft.com/Help/ISO-Tool
This tool writes dvds, so no other 3rd party dvd writing software is required.
Works on windows 7 & XP.
- #calcTaxRate 99 8.25
#sub 99.00
#tax 8.25 (0.0833333333333333)
#total 107.25
function calcTaxRate([float]$subtotal, [float]$tax) {
$subtotalFmt = "{0:0.00}" -f $subtotal
$taxFmt = "{0:0.00}" -f $tax
#calc
$taxrate = $tax/$subtotal
$total = $subtotal * (1 + $taxrate) #calc using taxrate, not tax input param
$totalFmt = "{0:0.00}" -f $total
#pseudo right-justify hack
$subPadding = " " * ( ("$totalFmt".length) - ("$subtotalFmt".length) )
$taxPadding = " " * ( ("$totalFmt".length) - ("$taxFmt".length) )
#output
"sub {0}{1}" -f $subPadding, $subtotalFmt
"tax {0}{1} ({2})" -f $taxPadding, $taxFmt, $taxrate
"total $totalFmt"
}
- #round 12.3456 #12.35
#round 12.3456 3 #12.346
function round($value, $decimals=2) {
[system.decimal]::round($value, $decimals)
}
- min F# console app examples, for breakpoint
System.Diagnostics.Debugger.Break() //ex 1 auto breakpoint
System.Console.ReadLine() |> ignore //ex 2
- visual studio command window
- shortcut keys: ctl + alt + A
COMMAND DESCRIPTION
build.rebuildSolution
cls clear screen
debug.breakpoints open breakpoints window
debug.disableAllBreakpoints
debug.enableAllBreakpoints
debug.watch2 open watch-2 window
file.copyFullPath
file.openContainingFolder
? "abc".Length 3
? x debug print x var/value
?? x debug quickwatch
Predefined Visual Studio Command Aliases
http://msdn.microsoft.com/en-us/library/c3a0kd3x.aspx
- ipconfig /release;
ipconfig /flushdns;
ipconfig /renew;
- powershell cultureInfo
get-culture cmdlet
[system.threading.thread]::currentThread.currentUICulture
(get-culture).textInfo.toTitleCase("foo bar") #Foo Bar
- set-alias <alias> <function>
set-alias foo calcFooPiSquare
- xcopy x:\data\* x:\backup\data\ /s/h/q
xcopy x:\data\* x:\backup\data\ /s/h/q/d:01-01-2011 #files modified on or after date
xcopy x:\data\* x:\backup\data\ /s/h/q/exclude:x:\exclude.txt
xcopy x:\data\file.txt x:\backup\data\ /s/h/q
/e to copy empty folders
file: exclude.txt
.bmp
.pdf
.dll
.exe
.ini
.log
.suo
.temp
.user
\.git\
\.svn\
\bin\
\debug\
\images\
\obj\
\release\
thumbs.db
- windows hosts file
c:\windows\system32\drivers\etc\hosts
- copy hosts file
gc c:\windows\system32\drivers\etc\hosts | out-file x:\backup\data\hosts.txt -encoding utf8
- virtual pc, toggle fullscreen: (right-alt) + enter
- powershell find all unique words/matches in file
use select-string allmatches with regex capture to show only match, not standard select-string output full line
- gi x:\foo.txt |
select-string "(\w+)" -allmatches |
%{
foreach($m in $_.matches) { #loop all matches found in line
$m.groups[0].value
}
} | sort -unique
- #one line
gi x:\foo.txt | select-string "(\w+)" -allmatches | %{foreach($m in $_.matches){$m.groups[0].value}} | sort -unique
- date format
(get-date).tostring("MM-dd-yyyy HH:mm:ss:fff") #HH=24 hour clock
(get-date).tostring("MM-dd-yyyy hh:mm:ss:fff tt") #hh=12 hour clock, tt=am/pm
- file attributes
attrib /?
#alt view file and folder attributes
gci x:\foo\ -rec
#view file attribute
attrib x:\foo\a.txt
#set readonly file attribute
attrib +r x:\foo\a.txt
#remove readonly file attribute
attrib -r x:\foo\a.txt
#recursive, files and folders
attrib +r x:\foo\* /s /d
attrib -r x:\foo\* /s /d
- reserved powershell variables, do not use for var names
"$args"
"$input"
- powershell REPL template for input loop processing, eg script calculator
requires entering input value only, not function/alias name
if function requires multiple params, split input param in function
#---------------------------------------------------
#template 1, min
function foo($string){$string} #function
while ($true) { #loop
$in = read-host "enter a value" #read input
foo($in) #call function
}
#---------------------------------------------------
#template 2, +ux
$host.ui.rawUI.windowTitle = "loop..." #set window title
function foo($string){$string} #function
while ($true) { #loop
$in = read-host "enter a value" #read input
if ($in -match "^(exit|quit|q)$") { #exit loop support
"exiting loop" #exit
break
}
else {
foo($in) #call function
}
}
#---------------------------------------------------
#template 3, anonymous function
while ($true) { #loop
$in = read-host "enter a value" #read input
if ($in -match "^(exit|quit|q)$") { #exit loop support
"exiting loop" #exit
break
}
else {
&{param($string) $string} $in #call anonymous function
}
}
#---------------------------------------------------
- powershell set window title
$host.ui.rawUI.windowTitle = "main"
- regular expressions
- regex match empty lines
REGEX DESCRIPTION
^\s*$ match empty line
^\s*$\r\n match empty line, with linebreak
- regex match duplicate lines in a text file, sort content first
search:^(.*)(\r?\n\1)+$
replace:\1
- regex match html anchor tags
works with multiple anchors on same line, and multiline using "dot matches newline"
the question mark in this regex ".*?" is what allows it to match multiples on same line
REGEX DESCRIPTION
<a[^>]*>.*?</a> match entire tag
(?<=<a[^>]*>).*?(?=</a>) match text only, including empty
--- regex to match
------------- lookbehind, match regex, then lookbehind and match anchor tag
-------- lookahead, match regex, then lookahead and match closing anchor tag
- regex lookaround - noncapturing groups - "lookaway" :)
NAME REGEX EXAMPLE DESCRIPTION MATCH
lookahead (?=R) A(?=B) match A, then lookahead and match B matches the A
A followed by B
negative lookahead (?!R) A(?!B) match A, then lookahead and match if NOT B matches the A
match A, as long as it's NOT followed by B
A NOT followed by B
lookbehind (?<=R) (?<=A)B match B, then lookbehind and match A matches the B
B preceeded by A
negative lookbehind (?<!R) (?<!A)B match B, then lookbehind and match if NOT A matches the B
match B, as long as it's NOT preceeded by A
B NOT preceeded by A
- git windows download
msysgit-fullinstall-1.7.3.1-preview20101002.exe
http://code.google.com/p/msysgit/downloads/detail?name=msysGit-fullinstall-1.7.3.1-preview20101002.exe&can=3&q=
- git clone
- clone repos from root, get error when clone while in repo working folder
"fatal: could not create work tree dir 'x:\code\project1'.: No such file or directory"
- create empty folder to clone into
examples
x:\> ni f:\code\project1\ -type d #directory
x:\> git clone x:\code\project1 f:\code\project1\ --no-hardlinks --no-checkout
- javascript redirect
window.location = "http://www.google.com";
- powershell dynamic array
(1..3)[1] #2
- powershell html encode file, line by line
$file = "x:\foo.txt"
gc $file | %{htmlEncode($_)} > ($file + ".out") #x:\foo.txt.out
- powershell html encode multiline string, here string
$hs = @"
#...
#...
"@
$hs | %{htmlencode $_}
- add-type -assembly system.web #calling add-type multiple times - ok
function htmlEncode($string) {
[web.httputility]::htmlencode($string)
}
#getOutFileName x:\file.txt #x:\file.txt.out
function getOutFileName($infile) {
[io.path]::getFileName($infile) + ".out"
}
function getOutFilePath($infile) {
[io.path]::getdirectoryname($infile)
}
- html/url encoding
add-type -assembly system.web
[web.httputility]::htmlencode("<foo />")
[web.httputility]::htmldecode("<foo />")
[web.httputility]::urlencode("www.foo.com/?a=b")
[web.httputility]::urldecode("www.foo.com%2f%3fa%3db")
- loading .net assemblies into powershell, add-type replaces loadWithPartialName (obsolete)
add-type -assembly system.web
#[system.reflection.assembly]::loadWithPartialName("system.web") #obsolete, use in p1
