UNIX for Advanced & Expert Users

hi,

i have a script.sh on my machine and it used in the system
but my question is how can i know the program called this script.sh??
i.e. from where it called and execute??


Many thanks

You want to know which program invoked script.sh? A ps listing will reveal the parent PID. It's possible for the parent to exit before the child does, though; then your process will show as orphaned.

Code:

ps wallx | { head -1; grep 'script\.sh'; }

ps options vary wildly between systems; see your local manual page for what will work for you.

The head is just to get the explanatory header as well; in a script, you don't want that.

Example:

Code:

vbvntv$ ps wallx | { head -1; grep to*tem ; }
F   UID   PID  PPID PRI  NI    VSZ   RSS WCHAN  STAT TTY        TIME COMMAND
0  1000  9478     1  15   0 113136 30536 -      SLl  ?         32:30 totem

Here, the parent's PID (PPID) is 1, which is typical for an orphan (the system's init process adopts any orphans).