Find the PID's of all threads of a process without ps or pidof

Question

So the system I'm working on (BusyBox) has a ps that takes no command line arguments and pidof returns nothing even though it exists within /sbin and points to killall5.

Another issue I had is that top takes no -H, but you can hit h (not H) in top to view the individual threads.

Any tips on how I can generate a list of all PID's under a given process name?

What system is this? Why are you tagging as Linux? It does not sound like one. — terdon, Feb 19 '14 at 19:23
I guess technically it's BusyBox, but I think Linux still applies. — Madau, Feb 20 '14 at 19:56
Ah, no, BusyBox is not Linux though it can work with the Linux kernel. It is most definitely not GNU/Linux in any case. — terdon, Feb 20 '14 at 20:06

score 20 · Answer 1 · answered Apr 08 '15 at 13:35

20

In case you have limited find (no -printf option):

find /proc -mindepth 2 -maxdepth 2 -name exe -exec ls -lh {} \; 2>/dev/null

answered Apr 08 '15 at 13:35

Virus_7

301
2
3

1

Thanks! Extension to display command line for each process too: `find /proc -mindepth 2 -maxdepth 2 -name exe -exec ls -lh {} \; -exec sh -c 'echo -n cmdline: ; cat "${0%exe}cmdline" | xargs -0 echo ; echo' {} \;` by also looking at `/proc//cmdline` as well as `/proc//exe` (note: not perfect, some quotes may be missing from command line args) – sparrowt Jan 27 '22 at 11:49

score 2 · Answer 2 · answered Feb 19 '14 at 16:00

2

Looking for bash:

find /proc -mindepth 2 -maxdepth 2 -name exe -lname '*/bash' \
    -printf %h\\n 2>/dev/null | 
sed s+^/proc/++

answered Feb 19 '14 at 16:00

Hauke Laging

88,146
18
125
174

Hey, so I think this is getting really close to what I'm looking for, but the version of find I'm working with does not have `-lname` as a possible expression. – Madau Feb 19 '14 at 16:26

Find the PID's of all threads of a process without ps or pidof

2 Answers2