Linux Shell Scripting Cookbook - Third Edition

How to do it...

ps reports information about active processes. It provides information about which user owns the process, when the process started, the command path used to execute the process, the PID, the terminal it is attached to (TTY, for TeleTYpe), the memory used by the process, the CPU time used by the process, and so on. Consider the following example:

$ ps
PID TTY       TIME CMD
1220 pts/0    00:00:00 bash
1242 pts/0    00:00:00 ps

Be default, ps will display the processes initiated from the current terminal (TTY). The first column shows the PID, the second column refers to the terminal (TTY), the third column indicates how much time has elapsed since the process started, and finally we have CMD (the command).

The ps command report can be ...