On: A guide to Linux signals

[SEJeff]

Sure but that isn't often nearly as useful as something like:

ps -efH | grep foob[a]r

Where you can see the arguments and whatnot. Both are good to know.

You can use awk's ability to do posix regex and emulate pgrep with:

ps -efH | awk '/foob[a]r/{print $1}'