How to list all background pids in bash

Use ps S. For example:

$ vim &[1] 8263$ ipython &[2] 8264$ ps S PID TTY      STAT   TIME COMMAND 3082 pts/0    Ss     0:00 bash 3137 pts/0    Sl+    0:00 python /usr/bin/ipython 8207 pts/2    Ss     0:00 bash 8263 pts/2    T      0:00 vim 8264 pts/2    Tl     0:00 python /usr/bin/ipython 8284 pts/2    Tl     0:00 python /usr/bin/ipython 8355 pts/2    R+     0:00 ps S

If you want get PIDs use below:

$ ps S | awk '{print  $  1 }' | grep -E '[0-9]'30823137820782638264828483578358835

Also you can use jobs -l But it show background processes only for current session.

But the same does not seem to work for process id?

You can try jobs -l or -p. The -l and -p switches cause the jobs command to also output process IDs.

In bash, as in tcsh, the command you probably want is jobs -l (for Long).

[ghoti@pc ~]$ sleep 300 &[1] 33811[ghoti@pc ~]$ sleep 301 &[2] 33812[ghoti@pc ~]$ sleep 302 &[3] 33813[ghoti@pc ~]$ jobs -l[1]- 33811 Running                 sleep 300 &[2]- 33812 Running                 sleep 301 &[3]+ 33813 Running                 sleep 302 &[ghoti@pc ~]$