The number of processes a user is running using bash

Question

I would like to know how I could get the number of processes for each user that is currently logged in.

Answer 1

You could try some variation of this:

ps haux Ou | cut '-d ' -f1 | uniq -c

It gives you the number of processes for each users (being logged in or not). Now you could filter those results using the output of the w command or another way of determining who is logged in.

Answer 2

Give this a try:

ps -u "$(echo $(w -h | cut -d ' ' -f1 | sort -u))" o user= | sort | uniq -c | sort -rn

In order to properly handle usernames that may be longer than eight characters, use users instead of w. The latter truncates usernames.

ps -u "$(echo $(printf '%s\n' $(users) | sort -u))" o user= | sort | uniq -c | sort -rn