Alain Kelder is a Giant Dork…

Little script to identify child process

I’ve got a script that loops through a list of directory names and compresses them. There are lots and once in a while I want to check on the progress and find out which directory in the list it’s working on.

The name of the script is compress.sh, tar will run as a child of it, which I can locate using the parent PID:

me@my:~$ show.proc.sh compress.sh
USER     TT         PID  PPID %CPU %MEM    VSZ  STARTED     TIME COMMAND
me       pts/19    1810 24357  0.0  0.0   4496 10:15:37 00:00:00  |           \_ /bin/bash ./compress.sh
me       pts/19    1857  1810  0.5  0.0   3696 10:16:03 00:00:01  |           |   \_ tar cfj 833444.tar.bz2 833444

show.proc.sh:

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#!/bin/bash
 
# get pid
pid=$(pgrep $1)
 
ps axfo user,tty,pid,ppid,pcpu,pmem,vsz,start,time,args | head -1
ps axfo user,tty,pid,ppid,pcpu,pmem,vsz,start,time,args | grep $pid | grep -v grep

compress.sh:

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#!/bin/bash
 
for d in $(cat dir.list.2010-05-11); do tar cfj $d.tar.bz2 $d && rm -rf $d; done