UNIX for Dummies Questions & Answers

I want to find out the number of processes returned by ps-u command..Need help.

Code:

expr $(ps -u userlist | wc -l) - 1

In most cases, this should do the trick (Linux Bash):

1. In Linux, you might want to get rid of the "-" in "ps -u" and just use "ps u" or you will get a warning message.

2. Count how many lines are presented before the actual list of processes produced by ps -u. Normally its 1, but could be 2 or more.

2. This example assumes 2 lines of text before the actual process data:

Code:

echo $[`ps u | wc -l`-2]

Code:

ps -u user |awk 'END{ print NR - 1 }'