Listing The Running Processes

• The ps command is used to view a list of running processes. When running it with no parameters, we get something like this:

       [choo@simey ~]$ ps
         PID TTY          TIME CMD
        1235 pts/3    00:00:00 tcsh
        2014 pts/3    00:00:00 ps
       

• The output is divided into the following columns:
  • PID - the process ID.
  • TTY - the "terminal" under which the process is running ('?' if none).
  • TIME - the CPU-time this process consumed so far (hours, minutes, seconds).
  • CMD - the command this process is executing.

Originally written by guy keren