Shell Script to Monitor PID cpu usage over time

Sometimes I feel like all the world’s problems can be solved with shell scripts. Here’s one that’s short and sweet. You give it a PID, interval, and outfile, and it keeps track of the PID given till the PID dies (or you kill the script). These values are plotted against time with gnuplot. I wrote it while keeping an eye on ‘top’ on a server. Snag it here

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