Linux Bash using ps -o to get process by specific name

Question

I am trying to use the ps -o command to get just specific info about processes matching a certain name  However  I am having some issues on this  when I try to use this even to just get all processes  like so  it just returns a subset of what a normal ps -ef would return  it doesn t return nearly the same number of results so its not returning all running processes   ps -ef -o pid time comm   I want to try something like this  below  but incorporate the ps -o to just get specific info from it  just the PID   ps -ef  grep  whoami   grep firefox-bin   Any advice is appreciated as to how to do this properly  thanks

User · Answer

ps -fC PROCESSNAME   ps and grep is a dangerous combination -- grep tries to match everything on each line  thus the all too common  grep -v grep hack   ps -C doesn t use grep  it uses the process table for an exact match  Thus  you ll get an accurate list with  ps -fC sh rather finding every process with sh somewhere on the line

User · Answer

This will get you the PID of a process by name   pidof name   Which you can then plug back in to ps for more detail   ps -p   pidof name

User · Answer

This is a bit old  but I guess what you want is  ps -o pid -C PROCESS NAME  for example   ps -o pid -C bash   EDIT  Dependening on the sort of output you expect  pgrep would be more elegant  This  in my knowledge  is Linux specific and result in similar output as above  For example   pgrep bash

User · Answer

Sorry  much late to the party  but I ll add here that if you wanted to capture processes with names identical to your search string  you could do   pgrep -x PROCESS NAME    -x          Require an exact match of the process name  or argument list if -f is given               The default is to match any substring     This is extremely useful if your original process created child processes  possibly zombie when you query  which prefix the original process  name in their own name and you are trying to exclude them from your results  There are many UNIX daemons which do this  My go-to example is ninja-dev-sync

User · Answer

Sometimes you need to grep the process by name - in that case   ps aux   grep simple-scan   Example output   simple-scan  1090  0 0  0 1   4248  1432          S    Jun11   0 00

[linux] Linux / Bash, using ps -o to get process by specific name?

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