Processes

ps ­ef Show every process with full output

ps ­ejH Show process hierarchy (tree)

pstree Show more graphical process tree

ps ­efL Show process threads

ps ­efZ Show processes with SELinux security context

ps ­u root ­f Show all processes run by the user root with full output

ps ­eo pid,ni,pri,stat,comm Show customizable output fields

ps ­C salt­master ­o pid= Show process IDs of a specific process (salt­master)

ps ­p 25409 ­o comm= Show only the name of process ID 25409

ps ­f ­t tty1 Show all processes running on a certain terminal (tty1)

ps ­eo pid,user,args ­­sort user Show all process ids,users and args sorted by user

ps ­u root ­eo start,pid,args Show all processes args run by a user with start time

pgrep ­u root sshd Grep for sshd processes run by root

pgrep ­u root,bob sshd Grep for sshd processes run by root OR bob

ps ­fp $(pgrep ­d, ­x salt­master) Give detailed statistics on all salt­master processes

kill 25045 Kill process 25045 nicely

kill ­9 25045 Kill process 25045 forcibly

kill ­HUP 25045 Send process 25045 hangup signal (reread config)

pkill salt­master Kill all processes named salt­master nicely

pkill ­9 salt­master Kill all processes named salt­master forcibly

kill ­HUP salt­master Send process named salt­master hangup signal

nice ­10 cp Run cp with a nice level of +10

nice ­­10 cp Run cp with nice level of ­10

renice ­10 cp Change nice value of running process (cp)

top Show top processes by resource

lsof List open files (running programs from disk)

lsof ­u root List open files owned by root

nohup cp ­av /media /backup & Run a command that will will survive a logout

pidof crond List process ID of crond