Using the ps command

You can use the ps command to display a list of your processes that are currently running and obtain additional information about those processes. (Only a superuser or a user with appropriate permissions can obtain information about all processes.)

For example, here the ps command displays the status of started processes:

     PID TTY       TIME COMMAND
  262148 ttyp0000  2:46 /bin/sh
  196614 ttyp0000  0:22 ./myprog
   65543 ttyp0000  0:13 /bin/grep
  196616 ttyp0000  2:07 /bin/ps

PID: This is a PID displayed as a decimal value.
TTY: The name of the controlling terminal, if any. The controlling terminal is the workstation that started the process. On a system with more than one workstation, the names of the workstations that have started processes are listed here.
TIME: The amount of central processor time the process has used since it began running.
COMMAND: The name of the command or program that started the process. The display indicates which directory the command or program is found in. For example, the ps command is in /bin.

Usually, just issuing ps will tell you all you need to know about your current processes. However, there are a number of options you can use to tailor the displayed information. For example, you can use the –a option to display only processes associated with a terminal, not the system processes. Read the ps command description in z/OS UNIX System Services Command Reference.