ps #

ps (1) - report a snapshot of the current processes.

Print all process information with BSD syntax:

ps aux

Print process information for all processes in full format:

ps -ef

Print process information for all processes in extra full format, long format:

ps -eFl

Format ps output:

ps -o comm,pid,ppid,user

Print processes matching a specific command name:

ps -C sshd

List all processes owned by a specific user:

ps -U user1

List all processes owned by a specific group:

ps -G group1