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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 and command line |
| -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 and the command line |
| of the process, rather than just the full path to the executable. 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> |
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