$ ps aux | grep -i ssh USER 4364 0.0 0.0 9004 1032 ? Ss 12:20 0:00 ssh -v -fND localhost:4000 USERNAME@SERVER-IP-ADDRESS $ pgrep localhost:4000
Why doesn't this work?
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Have a look at the man page for pgrep. It is not just an alias for running ps with a bunch of columns and then greping the text output. It actually searches specific fields for values. By default, it only looks at the process name when doing a search and returns the PID. You can search the full command line by adding the
-f option. You can also search several other fields that might be useful such as matching the terminal where a process is running or the group id.