Linux’s inbuilt utility processes status tool ps allows users and admins to check the information on the running processes. The process is nothing but a program in Linux/Unix that executes a specific task. The ps command in Linux is used to monitor all the currently running activities along with USER, PID, %CPU, %MEM, VSZ, RSS, TTY, STAT, START, TIME, COMMAND. ps is especially helpful for sysadmins to find the PID (processes identifier) of all the running processes to monitor and troubleshoot. Here’s how to use this tool.