You have a process called bigscript, and you need to know the PID number for...

Pgrep takes a process name and return a PID.

Note: pgrep looks through the currently running processes and lists the process IDs which matches the selection criteria to stdout. All the criteria have to match. For example, pgrep -u root sshd will only list the processes called sshd AND owned by root.

Incorrec answers:

ps bigscript: You can’t pass a name to ps, it interprets it as arguments.