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Save as a bash script and run as root to set the ondemand cpu frequency governor for all cpu cores. Name the file ondemand. Change 'ondemand' in the argument to performance or your preferred governor to do the same thing but set all cpu cores to use the performance governor (or your preferred governor)
The other 2 commands that are listed will also kill the egrep process and any libexec processes because the .exe isn't escaped so it is really using . meaning anything containing exe. The command i posted escapes the (dot) in .exe and then filters the actual egrep process so that it doesn't get killed before the other processes being killed. Also added the -9 switch for kill to send sigterm to the processes, in case people are wondering why processes aren't getting killed after running just kill . This should work better for people :)