command: ps
purpose: report a snapshot of the current processes.
syntax: $ps options
command line options
This version of ps accepts several kinds of options.
Unix98 options may be grouped and must be preceeded by a dash.
BSD options may be grouped and must not be used with a dash.
GNU long options are preceeded by two dashes.
examples:
1. To see every process on the system using standard syntax:
$ps -e
$ps -ef
$ps -eF
$ps -ely
2. To see every process on the system using BSD syntax:
$ps ax
$ps axu
3. To print a process tree:
$ps -ejH
$ps axjf
4. To get info about threads:
$ps -eLf
$ps axms
5. To get security info:
$ps -eo euser,ruser,suser,fuser,f,comm,label
$ps axZ
$ps -eM
6. To see every process running as root (real & effective ID) in user
format:
$ps -U root -u root u
7. To see every process with a user-defined format:
$ps -eo pid,tid,class,rtprio,ni,pri,psr,pcpu,stat,wchan:14,comm
$ps axo stat,euid,ruid,tty,tpgid,sess,pgrp,ppid,pid,pcpu,comm
$ps -eopid,tt,user,fname,tmout,f,wchan
8. To Print only the process IDs of syslogd:
$ps -C syslogd -o pid=
9. To Print only the name of PID 80:
$ps -p 80 -o comm=
regards,
dhanasekar
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