- git
which git # /usr/bin/git
/applications/xcode.app/contents/developer/usr/bin/git version # 2.24.3
q # quit
# git commit --amend --author "John Marquez <john@dev.com>"
# delete the last commit (revert)
# http://christoph.ruegg.name/blog/git-howto-revert-a-commit-already-pushed-to-a-remote-reposit.html
# git reset HEAD^ --hard
# config
git help config
git config --list # -l
git config --unset branch.foo.remote
git config --unset branch.foo.merge
git config --global user.name
git config --global user.email
git config --global user.name "john"
git config --global user.email "john@dev.com"
# git gc # cleanup
git branch -r # list remote branches
# git branch -r -d origin/demo # delete remote branch
# git remote prune origin --dry-run # delete all stale remote-tracking branches
git branch -m <oldname> <newname> # rename from any branch
git branch -m <newname> # rename current branch
git status
git status --short # -s
git log -n3 dev/app/lib.mm # git log for file, last n commits, filename is case sensitive
git log -n2 # Sun Oct 5 12:00:00 2014 -0600
git log -n2 --date=local # Sun Oct 5 12:00:00 2014
git log -n2 --date=short # 2014-10-05
git log -n2 --date=iso # 2014-10-05 12:00:00 -0600
git log --name-status
git log --name-status --author=kbcat --merges -n2
git log --name-status --author=kbcat --no-merges -n3 dev/app/file.c
git log --name-status --no-merges -n3
git log --name-only
git log --stat
git log -n3 --pretty=format:"%cd %h%n%s%n-------" --date=local # Sun Oct 5 12:00:00 2014
git log -n3 --pretty=format:"%cd %h%n%s%n-------" --date=iso # 10-05 12:00:00
| sed -e 's/2014-//'
| sed -e 's/ -0600//'
git log --abbrev-commit
git log --abbrev-commit --pretty=oneline
git log --abbrev-commit --pretty=oneline --author=kbcat
git log --abbrev-commit --pretty=oneline --author=kbcat dev/app/file.c
git log --abbrev-commit --pretty=oneline dev/app/file.c
git log --diff-filter=A --name-status # Added
git log --diff-filter=D --name-status # Deleted
git log --diff-filter=M --name-status # Modified
git log --diff-filter=R --name-status # Renamed
git log --diff-filter=AD --name-status # Added or Deleted
git log --before="2017-01-01"
git log --grep="bug" # match commit message
git log -Sfoo # find string occurrences +-
git show HEAD
git show HEAD~
git show HEAD~2
git show HEAD~3
git show f000000
git show f000000 dev/app/file.c
git show --name-status f000000
git show --pretty="format:" --name-only # last commit
git show --pretty="format:" --name-only f000000 # commit
git show --pretty="format:" --name-only stash@{0}
# show all commits in feature branch that are not in master branch
git log master..dev/fb
git log master..dev/fb --no-merges
# add files
git add dev/app/lib.*
git checkout -b fb1
git checkout stash
git checkout stash@{1} dev/app/file.c
git checkout stash@{1} -- dev/app/file.c
git checkout f000000 dev/app/file.c
git checkout -b temp stash@{1}
git cherry-pick f000000
git cherry-pick --no-commit f000000 # -n
git cherry-pick --edit f000000 # -e
git tag -a v1.0 -m "..."
git tag -l # list all tags, default shows 1 line of tag message
git tag -l -n3 v1.0 # show 3 lines of tag message
git show v1.0
git push origin [tagname]
git push origin v1.0
# update
git remote show origin
git fetch
git pull
git diff stash # diff working dir w/stash
git diff dev stash@{1} # diff dev branch w/stash
git diff stash@{1} file.c # diff file in working dir w/stash
git diff stash@{1} stash@{0} # diff stash 1 w/stash 0, most recent last
git diff stash@{1} stash@{0} file.c # diff file between stash 1 and stash 0
git diff f000000 f000001 -- file.c # diff file between commit x and commit y
git diff --staged
// git diff stash script, swift 5
for x in (1...20).reversed() {
let stashData = "stash@{\(x)} stash@{\(x - 1)}"
print("cl git diff \(stashData) --name-only")
print("# git stash drop stash@{\(x)}\n")
}
cl git diff stash@{10} stash@{9} --name-only
# git stash drop stash@{10}
cl git diff stash@{9} stash@{8} --name-only
# git stash drop stash@{9}
cl git diff stash@{8} stash@{7} --name-only
# git stash drop stash@{8}
cl git diff stash@{7} stash@{6} --name-only
# git stash drop stash@{7}
cl git diff stash@{6} stash@{5} --name-only
# git stash drop stash@{6}
cl git diff stash@{5} stash@{4} --name-only
# git stash drop stash@{5}
cl git diff stash@{4} stash@{3} --name-only
# git stash drop stash@{4}
cl git diff stash@{3} stash@{2} --name-only
# git stash drop stash@{3}
cl git diff stash@{2} stash@{1} --name-only
# git stash drop stash@{2}
cl git diff stash@{1} stash@{0} --name-only
# cl git diff stash@{1} stash@{0} # kb: up, L+W
# git stash drop stash@{1}
# do not drop stash zero
# interactive rebase, to edit/squash commits
# git rebase -i HEAD~2 # opens vim editor
# git rebase -i HEAD~3
# git rebase -i HEAD~4
# git rebase -i HEAD~5
# git rebase -i HEAD~6
# git rebase --continue
# git rebase --abort
# git stash save "backup"
git stash list
git stash list --date=local
git stash show # file list
# git stash pop/apply
# show stash sha1 hash
git reflog stash
git blame dev/app/file.c
git blame -L 100,110 dev/app/file.c
# --------------------------------------
- git workflow example 1
clear; git status
git init # initialized empty Git repository in /users/john/dev/app/.git/
git add file1.txt
git commit -m "..."
git log
git add . # add current folder
git commit -m "..." >> ~/gitCommitLog.txt
10 files changed, 20 insertions(+), 1 deletion(-)
create mode 100644 .gitignore
create mode 100644 HEAD
create mode 100644 c/lib.c
create mode 100644 c/lib.h
create mode 100644 file2.txt
# --------------------------------------
- git workflow example 2
WORKING_FOLDER=~/dev/app/
mkdir -p "$WORKING_FOLDER"
cd "$WORKING_FOLDER"
ls -alt
git init
git status # On branch master
touch .gitignore
echo .DS_Store > .gitignore
git add .gitignore
git add --all
git commit -m "new"
git log --name-status
# --------------------------------------
- git workflow example 3, GitHub
1. init, setup, and commit into local git repo
2. create repo on GitHub
3. push repo to GitHub
# test github connection
ssh -T git@github.com # Hi expressionsoftware! You've successfully authenticated, but GitHub does not provide shell access.
git init
touch .gitignore
echo .DS_Store > .gitignore
git add .gitignore
git commit -m "new"
# ...
# github repo url
ssl: git@github.com:expressionsoftware/foo.git
http: https://github.com/expressionsoftware/foo.git
# add remote and push
git remote add origin git@github.com:expressionsoftware/foo.git
git push -u origin master --porcelain --verbose # include -u (--set-upstream) on first push only
git push -u origin dev
git push origin master
git push origin dev
git push # current branch
# fatal: The current branch dev has no upstream branch.
# To push the current branch and set the remote as upstream, use
# git push --set-upstream origin dev
# clone
git clone git@github.com:expressionsoftware/foo.git # creates folder, default folder name, same as repo name, "foo"
git clone git@github.com:expressionsoftware/foo.git foobar # creates folder "foobar"
git clone git@github.com:expressionsoftware/foo.git . # current empty folder
# --------------------------------------
- .gitignore file
.cfusertextencoding
.ds_store
.fontconfig/
.gitignore~
.lesshst
.trash/
.viminfo
.xauthority
*~*
*.exe
xcuserdata/
# -----------------
app/temp.cpp
temp file 1.txt
# -----------------
# wildcards
# * wildcard requires full path
app/images/*png
*~
*.swp
# ignore all directories and files in a directory
tmp/**/*
- SSH Keys
# man ssh-keygen
# man ssh-agent
# man ssh-add
# ls -al ~/.ssh/
# ls -al /Users/*/.ssh/
# ls ~/.ssh/id_rsa.pub # Public Key, share
# ls ~/.ssh/id_rsa # Private Key, do not share
# ls ~/.ssh/config
# cat ~/.ssh/id_rsa.pub # Public Key, share
# cat ~/.ssh/id_rsa # Private Key, do not share
# cat ~/.ssh/config
## Generate an SSH Key Pair
# ssh-keygen -t rsa -b 4096 -C "email@foo.com"
## Add SSH Private Key to ssh-agent
# eval "$(ssh-agent -s)" # Start the ssh-agent in the background
# ssh-add -K ~/.ssh/id_rsa # Add your SSH Private Key to the ssh-agent and store your passphrase in the keychain
# Enter passphrase for /Users/a/.ssh/id_rsa:
# Identity added: /Users/a/.ssh/id_rsa (email@foo.com)
- GitHub Setup
# Copy SSH Public Key and add to GitHub account, one-time setup
# pbcopy < ~/.ssh/id_rsa.pub # Public Key, share
- # sed substitute replace
sed -e s/foo/BAR/ file.txt
sed -e s/foo/BAR/g file.txt
# --------------------------------------
# sed script html encode file
sed -f script.txt file.txt
sed -f script.txt file.txt > file.txt.out
s/\&/\&/g
s/</\</g
s/>/\>/g
s/"/\"/g
s/'/\'/g
# --------------------------------------
# sed script html decode file
s/\&/\&/g
s/\</</g
s/\>/>/g
s/\"/"/g
s/\'/'/g
- grep
# grep -ri -e 'foo' --include '*cpp*'
# grep -ri -E '\[\]' . --include=*.h
# grep -ri -E 'min|max' .
# fgrep -ri 'foo' . # all files
# fgrep -ri 'foo' . --include='*.h'
# fgrep -i 'foo' /users/j/file.txt
-n --line-number
-l --files-with-matches
-c --count
- translate regex replacement, lowercase uppercase
echo "Foo Bar 123" | tr 'A-Z' 'a-z' # foo bar 123
echo "Foo Bar 123" | tr 'a-z' 'A-Z' # FOO BAR 123
echo 'Foo Bar 123' | tr '0-9' '#' # Foo Bar ###
# lowercase
echo "Foo" | tr '[:upper:]' '[:lower:]'
# uppercase
echo "Foo" | tr '[:lower:]' '[:upper:]'
- translate
delete carriage return chars ^M
# tr -d '\r' < /users/j/bookmarks.html > /users/j/bookmarks_2.html
- vim 8.0
:help
:q quit, escape from :help
esc normal mode
. repeat command
b move 1 word back
dd delete line
dw delete word under cursor
i insert mode
u undo
w move 1 word forward
- # less text viewer
less -? # --help
less -V # --version
-i # --ignore-case # ignore case in searches that do not contain uppercase
-I # --IGNORE-CASE # ignore case in searches and patterns
/regex search string
less iPhone.storyboard
q # quit
# xcodebuild -showBuildSettings -project app.xcodeproj | less
- line word count
wc -lw main.storyboard
- macOS
- network setup
networkSetup -getComputername
networkSetup -printCommands
networkSetup -listAllNetworkServices
networkSetup -getInfo wi-fi # wifi network service, ip address
https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man8/networksetup.8.html
- ip address
ifconfig
ifconfig | grep "inet "
- spoof mac address
get current mac address and interface name with Option + Click on Wifi icon in menu toolbar
use your actual interface name, eg en0, en1, en2
# networksetup -getmacaddress en0
# sudo ifconfig en0 ether 00:00:00:00:00:00
- connected servers/volumes
ls -1 /volumes/
ls -Alt /volumes/serverName/folder/
- apps
ls -1 /applications
open -a /applications/textEdit.app 'file.txt'
open -a /applications/xcode.app 'file.txt'
- run app executable from command line
# ./app
- fileMerge diff app
opendiff file1 file2
- diff
compare directories
diff -rq ./dir1 ./dir2 # show files that are diff
diff -rqs ./dir1 ./dir2 # show files that are same
- defaults read/write plist
- view app bundle info
defaults read demo.app/info.plist CFBundleIdentifier # com.foo.demo
defaults read demo.app/info CFBundleVersion
defaults read /users/j/Library/Developer/CoreSimulator/Devices/*/Data/Containers/Bundle/Application/*/.com.apple.mobile_container_manager.metadata.plist MCMMetadataIdentifier # com.foo.demo
- show hidden files
defaults read com.apple.finder AppleShowAllFiles
defaults write com.apple.finder AppleShowAllFiles YES # NO
# killall Finder
- plutil read/write plist
plutil -p info.plist
plutil -convert xml1 info.plist -o - # print plist as xml
- config vars
getconf DARWIN_USER_CACHE_DIR # /var/folders/a0/aaa000/C/
- file flags
ls -lO
chflags uchg file # lock
chflags nouchg file # unlock
chflags -R uchg /dir # lock
chflags -R nouchg /dir # unlock
- extended attributes
# ls -l ~/downloads/ # list file or dir, extended attributes are indicated by an @ char at the end of the ownership and permissions info
# -rw-r--r--@ 1 apaak staff 1024 Sep 12 10:00 foo.app
xattr ~/downloads/foo.app
# xattr -p com.apple.quarantine ~/downloads/foo.app # print attribute, file quarantine
# xattr -d com.apple.quarantine ~/downloads/foo.app # delete attribute
# xattr -c ~/downloads/foo.app # delete all attributes, clear
# xattr -rc ~/downloads # delete all attributes from dir and files
- change file modes
u user (owner)
g group
o other
a all (everyone, ugo)
# chmod 700 ~/downloads/foo.app
# chmod u=rwx ~/downloads/foo.app
# chmod o-rwx ~/downloads/foo.app
u g o octal
rwx rwx rwx mode
100 000 000 400 r user
100 100 100 444 r all
110 000 000 600 rw user
111 000 000 700 rwx user
- file commands
# set file create modified date
touch -t 201701020000 /users/j/file
# copy file
# cp file1.txt file2.txt
# copy folder
# cp -npR ~/temp ~/backup # mac
# cp -nR ~/temp /volumes/10.0.0.100/backup # win
# rename/move file
# mv file1.txt file2.txt
# batch file rename w/sed regex, test w/echo
# ls * | sed -e 'p;s/foo/bar/' | xargs -n2 echo # mv
# remove file
# rm tempFile.txt
# remove folder
# rm -dfr tempFolder
# create parent intermediate folders path
# mkdir -p ~/dev/c
# sort file
# sort file1.txt -o file2.txt
# list files
ls -lt ~/temp
ls -ltT ~/temp # seconds
ls -1lhRt ~/temp
ls -l
ls -1 # file names
ls -1R # file names, recursive
ls * | xargs -n1
du -ach ~/Library/Developer/Xcode/DerivedData/*/Build/Products/Debug/cocoa.app
# file search, default recursive
# sudo find / -iname '*.app'
# find . -iname '*.h'
# find . -iname '*.txt' -depth 1 # top level files
# find . -iname '*.txt' -maxdepth 2 # all files up to max depth
# find . -iname '*.txt' -depth 2 # only depth 2 files
# find ~ -iname 'java'
# find ~/Library/Developer/Xcode/DerivedData/*/Build/Products/Debug/cocoa.app -type f
# find and delete files
# find . -iname '.ds_store' -type f
# find . -iname '.ds_store' -type f -exec rm {} \;
# find . -iname '.ds_store' -type f -print0 | xargs -0 rm
# find and delete git folders
# find . -iname '.git' -type d # find only
# find . -iname '.xgit' -type d -print0 | xargs -0 rm -dfr
# find . -iname '.xgit' -type d -print0 | xargs -0 sudo rm -dfr
# delete git folders
# rm -dfr .xgit
- unzip
https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man1/unzip.1.html
- SHA File Hash
https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man1/openssl.1ssl.html
openssl sha1 file_path
openssl sha1 /users/j/downloads/sqlite-shell-osx-x86-3080600.zip
SHA1(/users/j/downloads/sqlite-shell-osx-x86-3080600.zip)= 163d43f9a1bbc8a65c53b051a56371a305e6054a
- system_profiler
system_profiler -listDataTypes
system_profiler SPStorageDataType
system_profiler SPSoftwareDataType # System Software Overview
System Version: macOS 10.16 (20A4300b) # Big Sur beta
Kernel Version: Darwin 20
Boot Volume: Vol
Boot Mode: Normal
Time since boot: 1 day 4:04
Computer Name: dadoes
User Name: rick deckard (rickdeckard)
system_profiler SPHardwareDataType
system_profiler SPHardwareDataType | grep -i 'processor name:' | sed -e 's/ *Processor Name: *//'
https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man8/system_profiler.8.html
- disk util
diskutil list
diskutil cs list
diskutil info /volumes/vol1
diskutil eraseVolume JHFS+ untitled_usb_drive "/volumes/a usb drive"
- macOS
10.16 Big Sur (2020)
10.15 Catalina
10.14 Mojave
10.13 High Sierra
10.12 Sierra
10.11 El Capitan
10.10 Yosemite
10.09 Mavericks
10.08 Mountain Lion
- create macOS bootable install usb drive
diskutil eraseVolume JHFS+ untitled_usb_drive "/volumes/usb drive to erase and use"
sudo "/Applications/Install macOS Big Sur Beta.app/contents/resources/createinstallmedia" --volume /volumes/untitled_usb_drive
sudo "/Applications/Install macOS Catalina.app/contents/resources/createinstallmedia" --volume /volumes/untitled_usb_drive
sudo "/Applications/Install macOS Mojave.app/contents/resources/createinstallmedia" --volume /volumes/untitled_usb_drive
sudo "/Applications/Install macOS High Sierra.app/contents/resources/createinstallmedia" --volume /volumes/untitled_usb_drive --applicationpath "/Applications/Install macOS High Sierra.app"
- use bootable install usb drive
reboot, hold the Option key while booting to launch the Startup Manager, select the usb drive as the startup disk to begin install
- sysctl hw.machine # hw.machine: x86_64
- sound processing
# afinfo soundFile.m4a
# afConvert -f caff -d aac soundFile.m4a soundFile.caf
- system diagnostics
# sudo sysdiagnose xcode
/var/tmp/sysdiagnose_2013.10.13_15-00-00-MDT_Xcode.tar.gz # output
https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man1/sysdiagnose.1.html
# xcode beta
for _ in {1..10}
do
killall ReportCrash
killall SourceKitService
killall "Interface Builder Cocoa Touch Tool"
done
- bash
# exit # exit bash 4
# date format
date +%H:%M:%S # 22:52:01
date '+%m-%d-%y %H:%M:%S' # 08-28-16 20:19:53
date '+%m-%d-%y.%H%M%S' # 08-28-16.201953
echo $BASH # /bin/bash
echo $BASH_VERSION # 3.2.57(1)-release
# 4.4.5(1)-release
bash --version # 3.2.57(1)-release
# 4.4.5(1)-release
echo $HOME # /users/j
echo $HOSTNAME # h9000
echo $RANDOM # 10273, (0-32767)
echo $PATH # /usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
PATH="${PATH}:/users/j/dev/scala/bin"
export PATH
echo $PATH
echo -e "foo\nbar"
for x in {1..10}
do
echo $x
done
# bash array
declare -a data=("foo" "bar" "...")
for x in "${data[@]}"
do
echo $x
done
cal
cal 2017
cal 10 2017
cal -y
# --------------------------------------
# .bash_profile
# set min prompt
export PS1='$ '
# alias
alias cbp='cat ~/.bash_profile;'
alias cl='clear;'
alias fc='/users/j/applications/fileCompare' # fc f1 f2
alias od='/usr/bin/opendiff' # filemerge, od f1 f2
# git alias
alias gb=' git branch;'
alias gds=' git diff stash;'
alias gl=' git log --name-status;'
alias glm=' git log --name-status --author=john;'
alias glp=' git log --abbrev-commit --pretty=oneline;'
alias glpm=' git log --abbrev-commit --pretty=oneline --author=john;'
alias gmt=' git mergetool;'
alias gp=' git pull;'
alias gs=' git status;'
alias gsl=' git stash list;'
alias gsll=' git stash list --date=local;'
alias gslno=' git stash list --name-only;'
function filehashlog() {
set -x
filehash $1
set +x
}
function filehash() {
openssl sha1 $1
}
function fhash() {
filehash $1 | egrep -o "\b([a-z0-9]+)$"
}
function fcomp() {
local fh1=$(fhash $1)
local fh2=$(fhash $2)
printf "file compare sha1 hash\n%s = %s\n%s = %s\n\n" $fh1 $1 $fh2 $2
if [ $fh1 == $fh2 ]
then
printf "files are equal\n"
else
printf "files are NOT equal\n"
fi
}
# file open text edit
function fote() {
open "$1" -a textedit
}
function foxc() {
open "$1" -a xcode
}
# --------------------------------------
# !/bin/bash
# backup copy file w/timestamp script
# bash backupFileScript "file 1.txt"
if (($# == 1)) # one param
then
vTimestamp=$(date "+_%m%d%y_%H%M%S.txt")
vBackupFilename=$1$vTimestamp
echo "file: $1" # file 1.txt
echo "backup: $vBackupFilename" # file 1.txt_100713_203059.txt
# quote for filename space chars
cp "$1" "$vBackupFilename"
else
printf "user error\n1 filename param is required\n"
echo "params: ${#}"
fi
# --------------------------------------
# !/bin/bash
# 2013 Mac CPU Architecture Script
# bash cpuScript "intel core i7"
# returns CPU architecture, either 32 or 64 bit, based on processor name
# http://support.apple.com/kb/HT3696
# bug param count wrong for string w/spaces
# bash cpuScript $(system_profiler SPHardwareDataType | grep -i 'processor name:' | sed -e 's/ *Processor Name: *//')
# params: 3
# version 2.0
# 64-bit CPU Intel
# fix wrap command-substitution $() in double quotes to send 1 string param
# bash cpuScript "$(system_profiler SPHardwareDataType | grep -i 'processor name:' | sed -e 's/ *Processor Name: *//')"
# params: 1
# version 2.0
# 64-bit CPU Intel Core i7
echo "params: ${#}"
ver="2.0"
echo "version $ver"
# lowercase
v1=$(echo $1 | tr '[:upper:]' '[:lower:]')
case $v1 in
"intel core solo"|"intel core duo") echo "32-bit CPU $1"
;;
*) echo "64-bit CPU $1"
;;
esac
# --------------------------------------
bash base conversions
int to binary echo 'obase=2; 256' | bc # 100000000
int to hex echo 'obase=16; 256' | bc # 100
int to hex printf '%x\n' 256 # 100
int to octal echo 'obase=8; 256' | bc # 400
binary to int echo 'ibase=2; 100000000' | bc # 256
hex to int echo $((0x100)) # 256
hex to int echo 'ibase=16; 100' | bc # 256
hex to int printf '%d\n' 0x100 # 256
octal to int echo 'ibase=8; 400' | bc # 256
- R
/library/frameworks/r.framework/resources/r --version # 3.1.2
R.Version()
R.Version()$version # R version 3.1.2 (2014-10-31)
R.Version()$nickname # Pumpkin Helmet
?help # q
quit()
Sys.getenv()
ls()
?ls
ls(pattern = "^m.*")
?rm
# rm(m1)
# rm(list = ls()) # remove all
x = "foo"
nchar(x) # length 3
?matrix
?vector
- ruby
/usr/bin/ruby -v # 2.0.0p648 (2015-12-16 revision 53162) [universal.x86_64-darwin15]
ruby --help
- homebrew
/usr/local/bin/brew -v # 2.1.9
/usr/local/cellar
man brew
brew help
brew home
brew doctor
brew analytics
brew analytics off
brew list
brew update # update hb
brew outdated # list outdated packages
brew upgrade $FORMULA
# brew upgrade # upgrade all
brew cleanup -n # show cleanup
brew cleanup $FORMULA
# brew cleanup # cleanup all
brew info bash # 5.0.7
brew install bash # /usr/local/cellar/bash/*/bin/bash
brew info curl # 7.65.3
brew install curl # /usr/local/cellar/curl/*/bin/curl
brew info erlang # 22.0.7
brew install erlang # /usr/local/cellar/erlang/*/bin/erl
brew info git # 2.22.0
brew install git # /usr/local/cellar/git/*/bin/git
brew info leiningen # 2.9.1
brew install leiningen # /usr/local/cellar/leiningen/*/bin/lein
brew info node.js # 12.7.0
brew install node.js # /usr/local/cellar/node/*/bin/node
brew info python3 # 3.7.4
brew install python3 # /usr/local/cellar/python/*/bin/python3
brew info rust # 1.36.0
brew install rust # /usr/local/cellar/rust/*/bin/rustc
brew info scala # 2.13.0
brew install scala # /usr/local/cellar/scala/*/bin/scala
- leiningen (clojure)
/usr/local/bin/lein -v # Leiningen 2.8.1 on Java 10 Java HotSpot 64-Bit Server VM
lein -h
quit
L D quit
(quit)
lein repl ;;Clojure 1.8.0
(+ 1 2 3 4 5 6 7 8 9 10) ;;55
(def nums [1 2 3 4 5 6 7 8 9 10])
(apply + nums) ;;55
(for [x [:a :b], y (range 5) :when (odd? y)] [x y]) ;;([:a 1] [:a 3] [:b 1] [:b 3])
(doseq [x [:a :b], y (range 5) :when (odd? y)] (prn x y)) ;;:a 1
:a 3
:b 1
:b 3
nil
(def a 42)
a ;;42
(+ a) ;;42
(+ a 2) ;;44
(/ a 2) ;;21
(* a 2) ;;84
(take 10 (range)) ;;(0 1 2 3 4 5 6 7 8 9)
(map inc (take 10 (range))) ;;(1 2 3 4 5 6 7 8 9 10)
(map #(+ % 2) (take 10 (range))) ;;(2 3 4 5 6 7 8 9 10 11)
- erlang
/usr/local/bin/erl +V # Erlang (SMP,ASYNC_THREADS,HIPE) (BEAM) emulator version 6.3
/usr/local/bin/erlc -help
erl # Erlang/OTP 17 [erts-6.3.1] [source] [64-bit] [smp:8:8] [async-threads:10] [hipe] [kernel-poll:false] [dtrace]
help().
LG switch command
LG h|? help
LG i interrupt
c connect
LG q quit
q(). quit
code:root_dir(). %"/usr/local/cellar/erlang/17.4/lib/erlang"
erlang:loaded(). %loaded erlang modules, current and/or old code, including preloaded modules
erlang:memory().
erlang:system_info(process_limit). %262144
os:version(). %{14,1,0}
os:cmd("date"). %"Sat Jan 10 05:39:56 MST 2015\n"
io:format("hello Erlang!~n").
self().
process_info(self()).
process_info(self(), links).
processes().
length(processes()).
pwd().
ls().
cd("/users/j/erlang").
P1 = list_to_pid("<0.281.0>"). %<0.281.0>
is_pid(P1). %true
b(). %var bindings
f(). %forget all vars
f(X). %forget X var
string:concat(string:concat("foo", " "), "bar"). %"foo bar"
io:format("~s~n", ["foo bar"]). %foo bar
io:format("~w~n", ["foo bar"]). %[102,111,111,32,98,97,114]
Sq = fun(X) -> X * X end.
Sq(8). %64
math:sqrt(64). # 8.0
math:pi(). %3.141592653589793
now(). %{1420,849205,145416} timestamp from 1-1-1970 GMT
time(). %{17,20,5}
erlang:localtime(). %{{2015,1,9},{17,20,5}}
erlang:localtime_to_universaltime(erlang:localtime()). %{{2015,1,10},{0,20,5}}
T = lists:seq(0, 9). %[0,1,2,3,4,5,6,7,8,9]
T.
length(T). %10
AbcSha512 = crypto:hash(sha512, "abc"). %<<221,175,53,161,147,97,122,186,204,65,115,73,174,32,65,
49,18,230,250,78,137,169,126,162,10,158,238,230,75,...>>
is_binary(AbcSha512). %1
binary_to_list(AbcSha512).
length(binary_to_list(AbcSha512)). %64
lists:foreach(fun(B) -> io:format("~w ", [B]) end, binary_to_list(AbcSha512)).
binary:last(AbcSha512). %159
io:format("~s~n", [[io_lib:format("~2.16.0B ",[X]) || <<X:8>> <= AbcSha512 ]]).
L1 = ["foo", "bar", "foo", "foo++", "FOO", "abc"].
lists:foreach(fun(X) -> io:format("~s~n", [X]) end, L1).
lists:foreach(fun(X) -> io:format("~s~n", [X]) end, lists:sort(L1)). %FOO
abc
bar
foo
foo
foo++
%guid, 2^82 unique
make_ref(). %#Ref<0.0.0.393>
- node.js
/usr/local/bin/node -v # v5.6
node --help
node -e "require('repl').start({ignoreUndefined: true})"
node helloNode.js
# repl
.break
.clear
.exit
.help
.save session.js
.load session.js
LC terminate current command, twice to exit
LD exit
a = [1, 2, 3]; a.forEach(function(x){ console.log(x); });
//--------------------------------------
//node web server
//http://localhost:8000
//http://127.0.0.1:8000
var _http = require('http'),
_url = require('url');
_http.createServer(function(req, res)
{
console.log('request URL:', req.url);
var url = _url.parse(req.url, true);
if (url.path !== '/favicon.ico')
{
console.log('request headers:', req.headers);
res.writeHead(200, {'Content-Type': 'text/plain',
'Server' : 'Node'});
res.end('hello Node');
}
else
{
res.statusCode = 404;
res.statusMessage = 'Not found';
res.end();
}
}).listen(8000);
//--------------------------------------
var _fs = require('fs'),
_http = require('http'),
_url = require('url'),
webfolder = '/users/j/web';
function serveFile(res, path)
{
console.log('webfolder:', webfolder);
_fs.readFile(webfolder + path,
function(err, data)
{
res.writeHead(200, {'Content-Type': 'text/html',
'Server' : 'Node'});
res.write(data);
res.end();
});
}
//css text, alt to text/plain content-type
function serveTextFile(res, path)
{
_fs.readFile(webfolder + path,
function(err, data)
{
res.writeHead(200, {'Content-Type': 'text/html',
'Server' : 'Node'});
res.write('<!doctype html><html><head><title>foo</title></head><body style="background-color: #000; color: #fff;"><pre style="font-family: courier new;">');
res.write(data);
res.end('</pre></body></html>');
});
}
_http.createServer(function(req, res)
{
console.log('request URL:', req.url);
var url = _url.parse(req.url, true);
if (url.path !== '/favicon.ico')
{
serveFile(res, '/public/index.htm');
}
else
{
res.statusCode = 404;
res.statusMessage = 'Not found';
res.end();
}
}).listen(8000);
- python
python -V # 2.7.10 /usr/bin/python
python3 -V # 3.6.1 /usr/local/bin/python3 -> /usr/local/cellar/python3/3.6.1/bin/python3
python3 --help
python3 -c "print('foo')"
quit() # LD
pip3 -V # pip 9.0.1 /usr/local/lib/python3.6/site-packages (python 3.6)
sorted(['a', 'c', 'b']) # ['a', 'b', 'c']
sorted(['a', 'c', 'B']) # ['B', 'a', 'c']
sorted(['', ' ', '.', '/', '_']) # ['', ' ', '.', '/', '_']
sorted(['a', 'a.', 'a/', 'a_']) # ['a', 'a.', 'a/', 'a_']
sorted([1, 10, 9, 2, 20, 3]) # [1, 2, 3, 9, 10, 20]
for x in [' ', '.', '/', '_']:
print('\'{}\' = {}'.format(x, ord(x))) # ' ' = 32
'.' = 46
'/' = 47
'_' = 95
# --------------------------------------
# python file hash script, fileHash.py
import hashlib
def getFileHash(filePath):
md5 = hashlib.md5()
sha1 = hashlib.sha1()
sha224 = hashlib.sha224()
sha256 = hashlib.sha256()
sha384 = hashlib.sha384()
sha512 = hashlib.sha512()
with open(file, 'rb') as f:
for chunk in iter(lambda: f.read(8192), b''): # b'' = bytes literal
md5.update(chunk)
sha1.update(chunk)
sha224.update(chunk)
sha256.update(chunk)
sha384.update(chunk)
sha512.update(chunk)
print('md5: ' + md5.hexdigest())
print('sha1: ' + sha1.hexdigest())
print('sha224: ' + sha224.hexdigest())
print('sha256: ' + sha256.hexdigest())
print('sha384: ' + sha384.hexdigest())
print('sha512: ' + sha512.hexdigest())
print('file hash')
file = input('enter filename: ') # /users/j/file.txt
getFileHash(file)
# --------------------------------------
# example
python3 ~/fileHash.py
# file hash
# enter filename: /users/j/file.txt # abc
# md5: 900150983cd24fb0d6963f7d28e17f72
# sha1: a9993e364706816aba3e25717850c26c9cd0d89d
# sha224: 23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7
# sha256: ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad
# sha384: cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed8086072ba1e7cc2358baeca134c825a7
# sha512: ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f
# --------------------------------------
# python azure blob storage sdk
# http://azure.microsoft.com/en-us/documentation/articles/storage-python-how-to-use-blob-storage/
# http://azure.microsoft.com/en-us/documentation/articles/python-how-to-install/
# https://pypi.python.org/pypi/azure
pip3 search azure
pip3 install azure
ls -l /usr/local/lib/python3.5/site-packages
from azure.storage.blob import BlobService
blob_service = BlobService(account_name='__', account_key='__')
blob_containers = blob_service.list_containers
for bc in blob_containers():
print(bc.name)
blobs = blob_service.list_blobs('blobs')
for b in blobs:
print(b.name)
# upload blob
blob_service.put_block_blob_from_path('blobs',
'foo.txt',
'/users/j/temp.txt',
x_ms_blob_content_type='application/txt')
# uploaded blob url
http://foo.blob.core.windows.net/blobs/foo.txt
blob_service.delete_blob('blobs', 'foo.txt')
- curl
curl -V # 7.54
curl http://curl.haxx.se/docs/manpage.html
curl http://www.gutenberg.org/cache/epub/2600/pg2600.txt -o "~/downloads/tolstoyWarAndPeace.txt" # download file
curl http://a.com/a.jpg -o ~/downloads/a.jpg
# get
curl
-H "Accept: application/xml"
-H "Content-Type: application/xml"
-H "Cookie: foo=1"
-o "/users/j/downloads/a.com.txt"
-v
http://a.com
# post json body w/certificate
curl
-H "Accept: application/json"
-H "Content-Type: application/json"
-H "Content-Length: 17"
-H "Cookie: foo=1"
-H "Cookie: bar=1"
--cert /etc/ssl/certs/file.crt
--key /etc/ssl/certs/file.key
-X POST
-d '{ "foo" : "bar" }'
-v
http://b.com
- bc calculator
echo 2+2 | bc
bc # bc 1.06
bc -h # help
2 + 2 # ...
quit
8/2/16
notes
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