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I'm searching the easiest way to monitor the cpu usage of a single process in linux. Use ps and change output is the way i have, but maybe a monitor tool is better. Also I want to plot the usage (nice look). graph and gnuplot are to ugly ;) But plot is optional.

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The top command can take a PID as input:

top -p <pid>

No graphs available then though, but you will see the change in CPU usage for this process over time.

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