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| <html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>kill</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="gmondump.html" title="gmondump"><link rel="next" href="ldd.html" title="ldd"></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">kill</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="gmondump.html">Prev</a> </td><th width="60%" align="center">Cygwin Utilities</th><td width="20%" align="right"> <a accesskey="n" href="ldd.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="kill"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>kill — Send signals to processes</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis"><p><code class="command">kill</code> [-f] [-signal] [-s <em class="replaceable"><code>signal</code></em>] <em class="replaceable"><code>pid</code></em>... </p></div><div class="cmdsynopsis"><p><code class="command">kill</code> -l <em class="replaceable"><code>signal</code></em> | -L </p></div><div class="cmdsynopsis"><p><code class="command">kill</code> -h | -V </p></div></div><div class="refsect1"><a name="kill-options"></a><h2>Options</h2><pre class="screen"> |
| -f, --force force, using win32 interface if necessary |
| -l, --list print a list of signal names |
| -L, --table print a formatted table of signal names |
| -s, --signal send signal (use kill --list for a list) |
| -W, --winpid specified pids are windows PIDs, not Cygwin PIDs |
| (use with extreme caution!) |
| -h, --help output usage information and exit |
| -V, --version output version information and exit |
| </pre></div><div class="refsect1"><a name="kill-desc"></a><h2>Description</h2><p>The <span class="command"><strong>kill</strong></span> program allows you to send arbitrary |
| signals to other Cygwin programs. The usual purpose is to end a running |
| program from some other window when ^C won't work, but you can also send |
| program-specified signals such as SIGUSR1 to trigger actions within the |
| program, like enabling debugging or re-opening log files. Each program |
| defines the signals they understand.</p><p>You may need to specify the full path to use <span class="command"><strong>kill</strong></span> |
| from within some shells, including <span class="command"><strong>bash</strong></span>, the default |
| Cygwin shell. This is because <span class="command"><strong>bash</strong></span> defines a |
| <span class="command"><strong>kill</strong></span> builtin function; see the <span class="command"><strong>bash</strong></span> |
| man page under <span class="emphasis"><em>BUILTIN COMMANDS</em></span> for more |
| information. To make sure you are using the Cygwin version, try |
| </p><pre class="screen"> |
| $ /bin/kill --version |
| </pre><p> which should give the Cygwin |
| <span class="command"><strong>kill</strong></span> version number and copyright information. </p><p>The <code class="literal">-f</code> option uses Windows functions to |
| terminate processes forcefully. Use <code class="literal">-f</code> to |
| terminate native Windows processes not started by Cygwin processes. |
| <code class="literal">-f</code> can also be useful to terminate Cygwin processes |
| not answering to SIGKILL.</p><p>Unless you specific the <code class="literal">-W</code> option, the "pid" |
| values used by <span class="command"><strong>kill</strong></span> are the Cygwin pids, not the |
| Windows pids. To get a list of running programs and their Cygwin pids, |
| use the Cygwin <span class="command"><strong>ps</strong></span> program. <span class="command"><strong>ps -W</strong></span> |
| will display <span class="emphasis"><em>all</em></span> windows pids.</p><p>The <span class="command"><strong>kill -l</strong></span> option prints the name of the given |
| signal, or a list of all signal names if no signal is given.</p><p>The <span class="command"><strong>kill -L</strong></span> option is similar to <code class="literal">-l</code>, |
| but it will print signal names and their corresponding numbers.</p><p>To send a specific signal, use the <code class="literal">-signN</code> option, |
| either with a signal number or a signal name (minus the "SIG" part), as |
| shown in these examples:</p><div class="example"><a name="utils-kill-ex"></a><p class="title"><b>Example 3.8. Using the kill command</b></p><div class="example-contents"><pre class="screen"> |
| <code class="prompt">$</code> <strong class="userinput"><code>kill 123</code></strong> |
| <code class="prompt">$</code> <strong class="userinput"><code>kill -1 123</code></strong> |
| <code class="prompt">$</code> <strong class="userinput"><code>kill -HUP 123</code></strong> |
| <code class="prompt">$</code> <strong class="userinput"><code>kill -f 123</code></strong> |
| </pre></div></div><br class="example-break"><p>Here is a list of available signals, their numbers, and some |
| commentary on them, from the file |
| <code class="literal"><sys/signal.h></code>, which should be considered the |
| official source of this information.</p><pre class="screen"> |
| SIGHUP 1 hangup |
| SIGINT 2 interrupt |
| SIGQUIT 3 quit |
| SIGILL 4 illegal instruction (not reset when caught) |
| SIGTRAP 5 trace trap (not reset when caught) |
| SIGABRT 6 used by abort |
| SIGIOT 6 another name for SIGABRT |
| SIGEMT 7 EMT instruction |
| SIGFPE 8 floating point exception |
| SIGKILL 9 kill (cannot be caught or ignored) |
| SIGBUS 10 bus error |
| SIGSEGV 11 segmentation violation |
| SIGSYS 12 bad argument to system call |
| SIGPIPE 13 write on a pipe with no one to read it |
| SIGALRM 14 alarm clock |
| SIGTERM 15 software termination signal from kill |
| SIGURG 16 urgent condition on IO channel |
| SIGSTOP 17 sendable stop signal not from tty |
| SIGTSTP 18 stop signal from tty |
| SIGCONT 19 continue a stopped process |
| SIGCHLD 20 to parent on child stop or exit |
| SIGCLD 20 System V name for SIGCHLD |
| SIGTTIN 21 to readers pgrp upon background tty read |
| SIGTTOU 22 like TTIN for output if (tp->t_local&LTOSTOP) |
| SIGIO 23 input/output possible |
| SIGPOLL 23 System V name for SIGIO |
| SIGXCPU 24 exceeded CPU time limit |
| SIGXFSZ 25 exceeded file size limit |
| SIGVTALRM 26 virtual time alarm |
| SIGPROF 27 profiling time alarm |
| SIGWINCH 28 window changed |
| SIGLOST 29 resource lost (eg, record-lock lost) |
| SIGPWR 29 power failure |
| SIGUSR1 30 user defined signal 1 |
| SIGUSR2 31 user defined signal 2 |
| </pre></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="gmondump.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="ldd.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">gmondump </td><td width="20%" align="center"><a accesskey="h" href="cygwin-ug-net.html">Home</a></td><td width="40%" align="right" valign="top"> ldd</td></tr></table></div></body></html> |
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