Listing The Running Processes - Variations

• In order to list all processes we are running under our current shell:
  
  ps
• In order to list all processes we are currently running:
  
  ps x
• Listing all processes running on behalf of a given User:
  
  ps -u <user_name>
• Listing all processes running on the system:
  
  ps ax
• Listing a processes with a given pid (= process ID):
  
  ps -p <pid>

Originally written by guy keren