Linux/Shell

Table of Contents

• Table of Contents
• Zsh + Oh-my-zsh + Powerlevel10k
• All Terminals
• Nano
• Top
• Man pages

Zsh + Oh-my-zsh + Powerlevel10k

1. You can shorthand autocomplete paths inside commands, like:
   • cd /h/k/.s/
     -> cd /home/komidawi/.ssh

2. History search by starting fragment

   • Example:

     nano /home/komidawi/.ssh/known_hosts
     nano /etc/hosts
     
     nano /h<UP>
     

     will auto-complete into

     nano /home/komidawi/.ssh/known_hosts
     

3. Expand envs
   • $USER<TAB>
     -> komidawi
4. Print parameters help cat -<TAB>

   --help                  -- display help and exit
   --number            -n  -- number all output lines
   --number-nonblank   -b  -- number nonempty output lines, overrides -n
   --show-all          -A  -- equivalent to -vET
   --show-ends         -E  -- display $ at end of each line
   

5. Use take to mkdir and cd into it
   • take folder/subfolder/finish
   • it also works with zip archives, git repos and url downloads
6. Command history
   • Ctrl + R
   • Press again for next occurrence
7. Quick cd
   • You can move into folders by name of the folder without cd
8. List last visited dirs
   1. d (shortcut for dirs -v)
9. Command parking
   • Press Ctrl + Q to hide current command
   • After invoking another command, the first one comes back
10. Open command in editor
    • Ctrl + X, Ctrl + E
    • Opens in default editor ($EDITOR)
    • Useful for long commands
11. cd shortcuts
    • cd ....
      -> moves 4 levels up
    • cd -
      -> jumps to previous path
12. Extensive search
    • ls *.txt
      -> text files
    • ls **/*.txt
      -> text files (also within subdirectories)
    • ls **/(START)*.* -> files starting with word START
    • ls **/*(END).* -> files ending with word END
    • ls **/*(WORD)*.* -> files with WORD
    • ls **/*(.) -> search only files
    • ls **/*(/) -> search only folders
13. Complex alias
    1. In general:

       aliasname() {
           command $firstParam $secondParam
       }
       

    2. Example:

       getaks() {
           az aks list -g $1 -o $2
       }
       

14. List recently open directories
    1. d
15. Copy to clipboard (WSL2)
    1. command | clip.exe

All Terminals

1. Pretty format JSON
   • Use JQ, e.g.:
     • cat file.json | jq
   • Just colorize:
     • jc -c

Nano

1. Search a phrase
   • Ctrl + W
2. Search next occurrence
   • Ctrl + W
   • F6
3. Previous occurrence
   • Alt + Q
4. Show help
   • F1
5. Show navigation help
   • h

Top

1. Show process tree
   • Shift + V
2. Sort by CPU usage
   • Shift + P
3. Sort by Memory usage
   • Shift + M
4. Kill process
   • k

Man pages

1. Search
   • /<phrase>, Enter
2. Next occurrence
   • n