Linux’s ps (processes status) is used to check the information on its running processes. The process is nothing but a program in Linux/Unix to execute 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. It helps, mostly to the System Administrators to find the PID (processes identifier) of all the running processes to monitor and troubleshoot.
This guide will help you on how to use various options with the PS command. All the below examples were tested on RHEL and CentOS 7.6.