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<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>ps</title><link rel="stylesheet" type="text/css" href="docbook.css"><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot"><link rel="home" href="cygwin-ug-net.html" title="Cygwin User's Guide"><link rel="up" href="using-utils.html" title="Cygwin Utilities"><link rel="prev" href="profiler.html" title="profiler"><link rel="next" href="regtool.html" title="regtool"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">ps</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="profiler.html">Prev</a> </td><th width="60%" align="center">Cygwin Utilities</th><td width="20%" align="right"> <a accesskey="n" href="regtool.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="ps"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ps — Report process status</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis"><p><code class="command">ps</code> [-aeflsW] [-u <em class="replaceable"><code>UID</code></em>] [-p <em class="replaceable"><code>PID</code></em>]</p></div><div class="cmdsynopsis"><p><code class="command">ps</code> -h | -V </p></div></div><div class="refsect1"><a name="ps-options"></a><h2>Options</h2><pre class="screen">
-a, --all show processes of all users
-e, --everyone show processes of all users
-f, --full show process uids, ppids
-h, --help output usage information and exit
-l, --long show process uids, ppids, pgids, winpids
-p, --process show information for specified PID
-s, --summary show process summary
-u, --user list processes owned by UID
-V, --version output version information and exit
-W, --windows show windows as well as cygwin processes
With no options, ps outputs the long format by default
</pre></div><div class="refsect1"><a name="ps-desc"></a><h2>Description</h2><p>The <span class="command"><strong>ps</strong></span> program gives the status of all the Cygwin
processes running on the system (ps = "process status"). Due to the
limitations of simulating a POSIX environment under Windows, there is
little information to give. </p><p> The PID column is the process ID you need to give to the
<span class="command"><strong>kill</strong></span> command. The PPID is the parent process ID, and
PGID is the process group ID. The WINPID column is the process ID
displayed by NT's Task Manager program. The TTY column gives which
pseudo-terminal a process is running on, or a <code class="literal">'?'</code> for
services. The UID column shows which user owns each process. STIME is the
time the process was started, and COMMAND gives the name of the program
running. Listings may also have a status flag in column zero;
<code class="literal">S</code> means stopped or suspended (in other words, in the
background), <code class="literal">I</code> means waiting for input or interactive
(foreground), and <code class="literal">O</code> means waiting to output. </p><p> By default, <span class="command"><strong>ps</strong></span> will only show processes owned by
the current user. With either the <code class="literal">-a</code> or
<code class="literal">-e</code> option, all user's processes (and system processes)
are listed. There are historical UNIX reasons for the synonomous options,
which are functionally identical. The <code class="literal">-f</code> option
outputs a "full" listing with usernames for UIDs. The
<code class="literal">-l</code> option is the default display mode, showing a
"long" listing with all the above columns. The other display option is
<code class="literal">-s</code>, which outputs a shorter listing of just PID, TTY,
STIME, and COMMAND. The <code class="literal">-u</code> option allows you to show
only processes owned by a specific user. The <code class="literal">-p</code> option
allows you to show information for only the process with the specified
PID. The <code class="literal">-W</code> option causes <span class="command"><strong>ps</strong></span> show
non-Cygwin Windows processes as well as Cygwin processes. The WINPID is
also the PID, and they can be killed with the Cygwin
<span class="command"><strong>kill</strong></span> command's <code class="literal">-f</code> option. </p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="profiler.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="using-utils.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="regtool.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">profiler </td><td width="20%" align="center"><a accesskey="h" href="cygwin-ug-net.html">Home</a></td><td width="40%" align="right" valign="top"> regtool</td></tr></table></div></body></html>