bash (Bourne Again Shell)sh (Bourne Shell)ash (Almquist Shell)dash (Debian Almquist Shell)csh (C Shell)tcsh (TENEX C Shell)zsh (Z Shell)/etc/passwd
mateusza:x:1000:1000:Mateusz A.,,,:/home/mateusza:/bin/bash
^^^^^^^^^
Zmiana shella: chsh
if, for, while, break, continue, return, exit)alias, unalias)declare, export, let)echo, true, false)history, hash, cd)