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CompTIA Linux+ Certification Guide by Philip Inshanally

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Viewing and managing processes using the top command

The top command, which means table of processes, is similar in nature to Windows task manager. You will find a wide variety of Linux distributions that support the top command. The top command is essentially used to derive the system's CPU and memory utilization. The output is structured by creating a list of running processes selected by user-specified criteria; the output is in real time. The PID for each process is listed in the first column. Let's fire it up:

[philip@localhost ~]$ toptop - 12:50:44 up 5 days, 11:44,  2 users,  load average: 0.01, 0.02, 0.05Tasks: 165 total,   1 running, 164 sleeping,   0 stopped,   0 zombie%Cpu(s): 12.1 us, 1.4 sy, 0.0 ni, 86.1 id, 0.0 wa, 0.0 hi, 0.4 si, 0.0 ...

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