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https://github.com/paradite/bash-cheatsheet

:scroll: bash cheatsheet
https://github.com/paradite/bash-cheatsheet

bash cheat-sheet cheatsheet cloc git http-server osx-setup sed terminal

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README 

        
# bash cheatsheet



> Specific to OS X only



# TOC



- [nginx](#nginx)

- [Git](#git)



## kill gpg-agent



```bash

$ killall gpg-agent

# or

$ gpgconf --kill gpg-agent

```



## make shell scripts executable



```bash

$ chmod +x script.sh

```



## static http server



```bash

# python2

$ python -m SimpleHTTPServer 8000



# python3

$ python3 -m http.server



# alias

alias http="python -m SimpleHTTPServer 8000"

```



## nginx



```bash

# check current config and print config path

$ nginx -t



# update the config

$ open /usr/local/etc/nginx/



# run

$ nginx



# stop

$ nginx -s stop



# restart

$ nginx -s reload

```



## modify files using sed



```bash

# substitute and print to stdout

$ sed -e 's/one/first/g' test-file.txt



# substitute in place with backup

$ sed -i '.backup' -e 's/one/first/g' test-file.txt



# substitute in place without backup

$ sed -i '' -e 's/another/next/g' test-file.txt

```



[sed example](./sed-example)



## count lines of code for each individual file



```bash

# count lines of code for jsx files in current folder

$ wc -l `find . -type f -name "*.jsx" | sort -n`



# count lines of code for jsx and css files in current folder

$ wc -l `find . -type f -name "*.jsx" -or -name "*.css" | sort -n`



# count lines of code for tsx files in src folder

$ wc -l `find ./src -type f -name "*.tsx" | sort -n`



# count tsx or ts files, excluding *.test.ts and .test.tsx, sort by LOC

$ wc -l `find ./src -type f '(' -name "*.tsx" -or -name "*.ts" ')' -not '(' -name "*.test.ts" -or -name ".test.tsx" ')'` | sort -n



# alias

alias wct=$'wc -l `find ./src -type f -name "*.tsx" | sort -n`'

```



[count example](./count-example)



## Git



### remove old merged git branches that are no longer in remote



```bash

# prune remote-tracking branches no longer on remote

$ git fetch --prune



# print local branches that are not found on remote

$ git branch -r | awk '{print $1}' | egrep -v -f /dev/fd/0 <(git branch -vv | grep origin) | awk '{print $1}'



# remove local branches that are not found on remote

$ git branch -r | awk '{print $1}' | egrep -v -f /dev/fd/0 <(git branch -vv | grep origin) | awk '{print $1}' | xargs git branch -d



#alias

alias gfp="git fetch --prune"

alias gcz="git cz"

alias grm=$'git branch -r | awk \'{print $1}\' | egrep -v -f /dev/fd/0 <(git branch -vv | grep origin) | awk \'{print $1}\' | xargs git branch -d'

```



### Revert to remote origin master



```bash

$ git checkout origin/master filename

```



### Sort files by git modified date



> https://serverfault.com/questions/401437/how-to-retrieve-the-last-modification-date-of-all-files-in-a-git-repository#comment1118135_401450



```bash

$ git ls-tree -r --name-only HEAD | while read filename; do   echo "$(git log -1 --format="%ai" -- $filename) $filename"; done | sort

```



## Android emulator



> https://stackoverflow.com/a/48729278/1472186



```bash

# list devices with identifiers

$ ~/Library/Android/sdk/emulator/emulator -list-avds



# run in background

$ ~/Library/Android/sdk/emulator/emulator -avd Pixel_2_API_28 &



$ alias android="~/Library/Android/sdk/emulator/emulator -avd Pixel_2_API_28 &"

```



## iOS Simulator



```bash

# list devices with identifiers

$ instruments -s devices



# start Simulator

$ open /Applications/Xcode.app/Contents/Developer/Applications/Simulator.app/



$ alias ios="open /Applications/Xcode.app/Contents/Developer/Applications/Simulator.app/"

```



## List open ports



```bash

$ sudo lsof -iTCP -sTCP:LISTEN -n -P

$ sudo lsof -i -P -n | grep LISTEN

```



## List tar/zip file contents



```bash

$ tar -tvf archive.tar

```



## Remove node_modules



```bash

# check

$ find . -name "node_modules" -type d -prune | xargs du -chs



# remove

$ find . -name "node_modules" -type d -prune -exec rm -rf '{}' +

```



## Remove .DS_Store



```bash

$ find . -name ".DS_Store" -delete

```



## Spotlight indexing



```bash

# turn off

$ sudo mdutil -a -i off



# turn on

$ sudo mdutil -a -i on

```



## virtualenv



```bash

$ virtualenv venv

$ source venv/bin/activate

$ deactivate

```



---



## Other cheatsheets

- [d3-cheatsheet](https://github.com/paradite/d3-cheatsheet)

- [pure-bash-bible](https://github.com/dylanaraps/pure-bash-bible)



## License



MIT