Name
ps — stdin stdout - file -- opt --help --version
Synopsis
ps [options
]
The ps
command displays
information about your running processes, and optionally the
processes of other users.
$ ps PID TTY TIME CMD 4706 pts/2 00:00:01 bash 15007 pts/2 00:00:00 emacs 16729 pts/2 00:00:00 ps
ps
has at least 80 options;
we’ll cover just a few useful combinations. If the options seem
arbitrary or inconsistent, it’s because the supplied ps
command (GNU ps) incorporates the
features of several other Unix ps
commands, attempting to be compatible with all of them.
To view your processes:
$ ps -ux
all of user smith’s processes:
$ ps -U smith
all occurrences of a program:
$ ps -C program_name
processes on terminal N
:
$ ps -tN
particular processes 1, 2, and 3505:
$ ps -p1,2,3505
all processes with command lines truncated to screen width:
$ ps -ef
all processes with full command lines:
$ ps -efww
and all processes in a threaded view, which indents child processes below their parents:
$ ps -efH
Remember, you can extract information more finely from the
output of ps
using grep
and other filter programs:
$ ps -ux | grep myprogram
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