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In some cases, you may want to know the number of processes working in the system. You can know it by grep -ef | grep <process name> | wc -l |
Following is the example to check the total number of process for "postgres":
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ps -ef | grep postgres | wc -l |
Following is the example to check the total number of process for "ffmpeg":
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ps -ef | grep ffmpeg | wc -l |