This flag is obsolete and may be discontinued in a future release. deselect Select all processes except those that fulfill the specified conditions (negates the selection). d Select all processes except session leaders. a Select all processes except both session leaders (see getsid(2)) and processes not associated with a terminal. An alternate description is that this option causes ps to list all processes with a terminal (tty), or to list all processes when used Processes selected in this manner is in addition to the set of processes selected by other means. Ps -eopid,tt,user,fname,tmout,f,wchan Print only the process IDs of syslogd: ps -C syslogd -o pid= Print only the name of PID 42: ps -p 42 -o comm= SIMPLE PROCESS SELECTION a Lift the BSD-style "only yourself" restriction, which is imposed upon the set of all processes when some BSD-style (without "-") options are used or when the ps personality setting is BSD-like. Ps axo stat,euid,ruid,tty,tpgid,sess,pgrp,ppid,pid,pcpu,comm ![]() Ps -eM To see every process running as root (real & effective ID) in user format: ps -U root -u root u To see every process with a user-defined format: ps -eo pid,tid,class,rtprio,ni,pri,psr,pcpu,stat,wchan:14,comm Ps axms To get security info: ps -eo euser,ruser,suser,fuser,f,comm,label Ps axjf To get info about threads: ps -eLf Ps -ely To see every process on the system using BSD syntax: ps ax EXAMPLES To see every process on the system using standard syntax: ps -e A process will thus be shown if it meets any of the given The default selection is discarded, and then the selected processes are added to the set of processes to be displayed. These effects are not considered when options are described as being "identical" below, so -M will be considered identical to Z and so on.Įxcept as described below, process selection options are additive. The use ofīSD-style options will also change the process selection to include processes on other terminals (TTYs) that are owned by you alternately, this may be described as setting the selection to be the set of all processes filtered to exclude processes ownedīy other users or not on a terminal. You can override this with the PS_FORMAT environment variable. The use of BSD-style options will add process state (stat=STAT) to the default display and show the command args (args=COMMAND) instead of the executable name. (tname=TTY), the cumulated CPU time in hh:mm:ss format (time=TIME), and the executable name (ucmd=CMD). It displays the process ID (pid=PID), the terminal associated with the process It is fragile, subject to change, and thus should not be relied upon.īy default, ps selects all processes with the same effective user ID (euid=EUID) as the current user and associated with the same terminal as the invoker. This behavior is intended to aid in transitioning old scripts and habits. If the user named "x" does not exist, this ps may interpret the command as " ps aux" instead and print a The POSIX and UNIX standards require that " ps -aux" print all processes owned by a user named "x",Īs well as printing all processes that would be selected by the -a option. Note that " ps -aux" is distinct from " ps aux". ![]() There are some synonymous options, which are functionally identical, due to the many standards and ps implementations that this ps is Options of different types may be freely mixed, but conflicts can appear. ![]() GNU long options, which are preceded by two dashes.BSD options, which may be grouped and must not be used with a dash.UNIX options, which may be grouped and must be preceded by a dash.This version of ps accepts several kinds of options: If you want a repetitive update of the selection and the displayed information, use top(1) instead. ![]() Ps - report a snapshot of the current processes.ĭESCRIPTION ps displays information about a selection of the active processes. This Linux tutorial explains how to use the Linux ps command with syntax and arguments.
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