I'm curious whether there's an easy way to renice(8) a process and all of its children in one simple command. For example, I might start a recursive make, which spawns lots of processes, and want them all to change priority at once.
The command I want is this:
renice +10 -r process-ID
Except for the fact that -r is not a valid flag. The pstree utility, in the ports, seems like it might be a good start to hack this functionality in. I searched google for "recursive renice" and found someone had made a sed script, but it's for linux, where the pstree output is different. Here's some example pstree output:
| \-+- 14187 zevt gmake | \-+- 14189 zevt gmake all-recursive | \-+- 14190 zevt /bin/sh -c set fnord ; | \-+- 14807 zevt /bin/sh -c set fnord ; [etc.]
Google result that's relevant: http://mail.gnu.org/archive/html/bug-coreutils/2003-10/msg00033.html
Any hints? Thanks in advance to any answers.
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