Zshell

[shwetank_gupta]

Hello ,
I am new to use z-shell .I am trying to understand a script written in Z-Shell .Can anybody plz tell me what is the meaning of command "cd $0:h"

[jozyba]

The short answer is that it changes the current directory to the directory in which the script resides.

$0 is a positional parameter that, in this context, expands to the path of the script which is currently running.

:h is one of a pair of modifiers (:h head, and :t tail).

If the path to the script that you are running is /home/shwetank_gupta/bin/myscript.sh then :t is the 'tail' of the path: myscript.sh, and :h is the rest of the path i.e. /home/shwetank_gupta/bin.

So "cd $0:h" would change directory to /home/shwetank_gupta/bin.