I would like to extract PID from top for desired process and user. So, I can get a consistently updating list with this command top -u meh, but how do I extract PIDs for java for user meh from here and get the result below?
$top -u meh
34249 meh 20 0 36.7g 11.7g 2240 S 97.0 1.5 2594:00 java
36864 meh 20 0 37.7g 12.2g 2232 S 97.0 1.6 2588:58 java
33607 meh 20 0 37.9g 12.2g 2244 S 96.7 1.6 2584:22 java
17027 meh 20 0 163228 3420 1596 R 1.0 0.0 0:00.10 top
617 meh 20 0 117872 316 312 S 0.0 0.0 0:00.12 bash
1626 meh 20 0 117872 236 236 S 0.0 0.0 0:00.10 bash
2056 meh 20 0 130624 276 276 S 0.0 0.0 0:00.06 screen
2057 meh 20 0 117892 312 308 S 0.0 0.0 0:00.08 bash
3912 meh 20 0 117892 248 248 S 0.0 0.0 0:00.07 bash
4516 meh 20 0 117872 236 236 S 0.0 0.0 0:00.09 bash
7166 meh 20 0 117872 312 308 S 0.0 0.0 0:00.09 bash
result:
34249 36864 33607
Here is the baseline for it, you can add more grep and pipe if you want specific user
top -p $(ps -fea|grep -i java |grep -v grep|cut -d' ' -f3 | tr '\n' ','| head --bytes -1 )