Obtaining thread per process information

[FFUser]

Hi -

I am using R that uses a wrapper function for the fork() utility. I would like to see how many child processes are running at a given time from the shell. Naturally, these child processes all run under the parent R process that invoked the wrapper function, so I have the pid of the ultimate parent. I have tried various arguments to the 'ps' command, but to no avail. Any suggestions?

Thanks!

Version info:
Linux: 2.6.27.19-170.2.35.fc10.x86_64
R: 2.9.0 (2009-04-17)

[gthill]

try the command

pstree - to display a tree of processes

man pstree for your options

[FFUser]

Perfect - exactly what I was looking for. Thanks!

[marko]

This is a ps command I use, the threads are grouped by parent process

ps -eLPc

Of course the pstree is more convenient if you just want the count of the threads