what goes on inside OS when we type df in shell.
 

Hi all,

I was interviewed with a question - What all steps happen when you run a command in shell. Lets say #df <- enter.

Can someone please point me to some link having in-depth explanation about this please. I would like to know about system calls, open, load and closing files, a generic sequence infact.

Thanks a lot in advance :).

-Rajesh.

How about doing a wee bit research yourself? You could start with strace -v /bin/bash -c 'strace -v /bin/df' or 'strace -v /bin/df' and take it from there?