Useful CLI commands

[May]

1 minute read

These are just reminders/documentation for me because I don’t want to remember them. It is not a guide for anything, it just has commands and tricks I use when reinstalling OS or fixing someone’s computer.

GNU/Linux
- remap right alt key with context menu button (I miss the context button on my ThinkPad)
```
// add this to your startup script to make it permanent
xmodmap -e "keycode  108 = Menu"
```
- awk
```
awk '/regex/'
awk '!/regex/'

awk 'BEGIN{a=5; b=2.5; print a+b}'
awk '{sub(/:/, "-")} 1' // subtitution
awk '{gsub(/:/, "-")} 1'
```
- Make VS Code remember Github credentials; Easier if you are working with multiple accounts for work and personal.
  
  git config credential.helper store
- Print exit code of previous-run program
  
  echo $?

Windows

PATH manipulation

env | grep PATH
echo $PATH
export PATH=<previous-paths>:<new-path>

List network devices

arp -a

nodejs
- Installing NPM
  
  curl -L https://npmjs.org/install.sh | sudo sh
- Clear node modules cache and install dependencies
```
rm node_modules -r
npm cache clean --force
npm cache verify
npm install
```

Siva Dhayalan