Get the username and the process ID of a process in bash

bash ps
user2897690 picture user2897690 · Feb 12, 2014 · Viewed 26.5k times · Source

I am writing a bash script where I need to find out the userID of a process. For an example let the process be bash itself.

I tried ps aux | grep ba[s]h but the following was returned:

1000      2745  0.0  0.1  28360  5440 pts/1    Ss   10:11   0:01 bash

I see the userID 1000 displayed, but I want the username.

Answer

sat picture sat · Feb 12, 2014

This can happen if the username is longer than 8 characters (OR) id has no name. But, If you want the username in the ps output then try this,

ps -eo uname:20,pid,pcpu,pmem,sz,tty,stat,time,cmd | grep '[b]ash'

Related questions

Counting open files per process

I'm working on an application that monitors the processes' resources and gives a periodic report in Linux, but I faced a problem in extracting the open files count per process. This takes quite a while if I take all of …

Read More
Using bash ps and cut together

I need to extract PID, UID and command fields from 'ps' and I have tried it like this: ps -L u n | cut -f 1,2,13 For some reason, this behaves as there is no cut command whatsoever. It just returns normal …

Read More
How to get ps to print group?

ps aux will print out something formatted according to the below. It shows the user that the process runs under. But is there a way to display the group that the process runs under? USER PID %CPU %MEM VSZ RSS …

Read More