killshot13/linux_snippets.md

## linux_snippets.md

      
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              linux_snippets.md
            
          
    Linux Terminal Snippets

one-liners

(randomCollection)


Reference Guide 2 $ymbols
/  -root directory
~  -home directory
$  -normal user
#  -admin (root user)
%  -used in C shell
.  -current directory
.. -parent directory
?  -wildcard for 1 char
*  -wildcard for 'chars'
[] -wildcard for 1 'chars'
;  -cmd sep (seq will run)
&& -cmd sep (seq won't run)
&  -cmd sep (line return)
<  -input from file
>  -output to file
|  -cmd chaining
!  -rerun (follow w/ num)
!! -rerun previous

Serves as a quick reference to view/copypasta common Linux terminal commands.
For a full cheatsheet check out Jure Šorn's downloadable Comprehensive Linux Cheatsheet.

1). Kill process LISTEN on a given port (in this case 8000):
sudo kill -9 $(lsof -t -i:8000 -sTCP:LISTEN)

2). View process running on a given port (in this case 5000):
sudo lsof -t -i:5000

3). Generate an ssh key using your email address:
ssh-keygen -t rsa -b 4096 -C your_email@example.com

4). Check which directories are currently in PATH:
echo $PATH

5). Add a directory to PATH (in this case /home/.linuxbrew/lib/ruby/gems/3.0.0/bin):
export PATH="$HOME/.linuxbrew/lib/ruby/gems/3.0.0/bin"