List pid bash

$ 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

Source: stackoverflow.com

List pid bash

$ ps S | awk '{print  $  1 }' | grep -E '[0-9]'
3082
3137
8207
8263
8264
8284
8357
8358
835

Source: stackoverflow.com

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