The ps
command in shell lists all the processes running on the system, and includes information such as the process id, parent process id, process user/owner, CPU usage, memory usage, etc. This can be useful, for example, for identifying and troubleshooting problems with programs or active processes.
The "aux
" specified after the ps
command is merely different options mixed together, that do the following:
a
— shows processes for all users;u
— shows the user/owner of processes;x
— includes processes that are not attached to a terminal.
For example, running the ps aux
command in a shell might produce an output like the following:
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND nobody 30721 0.0 0.1 220292 10014 ? S 15:01 0:01 /usr/sbin/httpd mysql 2116 0.1 4.6 144164 283521 ? Ssl Jul01 80:28 /usr/sbin/mysqld # ...
For detailed information you can run the man ps
command in terminal.
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