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Determine Number of Processes Running

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# 1  
Old 12-17-2007
Determine Number of Processes Running
I am pretty new to unix, and I have a project to do.

Part of the project asks me to determine the number of processes running and assign it to a variable. I know how to every part of the project but determine the number of processes running.

How can I get just the number of processes running?

Thanks,
-Kevin
# 2  
Old 12-17-2007
ps -ef | wc -l
# 3  
Old 12-17-2007
Thanks a bunch!
# 4  
Old 12-17-2007
Quote:
Originally Posted by wayne1411
to determine the number of processes running and assign it to a variable.
To be precise:

Code:
var=$(ps -fe | wc -l)

assigns the value to variable var.

bakunin
# 5  
Old 12-17-2007
Do you need the -f option with ps?
(All it does is use up a load of cpu cycles gathering extra information about each process, that you will then throw away.)

Another option is to use sar to list the system process table utilization:
Code:
sar -v 5 5

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