137 lines
6.8 KiB
HTML
137 lines
6.8 KiB
HTML
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<title>watchexec(1) - execute commands when watched files change</title>
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<body id='manpage'>
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<div class='mp' id='man'>
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<div class='man-navigation' style='display:none'>
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<a href="#NAME">NAME</a>
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<a href="#SYNOPSIS">SYNOPSIS</a>
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<a href="#DESCRIPTION">DESCRIPTION</a>
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<a href="#OPTIONS">OPTIONS</a>
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<a href="#ENVIRONMENT">ENVIRONMENT</a>
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<a href="#EXAMPLES">EXAMPLES</a>
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<ol class='man-decor man-head man head'>
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<li class='tl'>watchexec(1)</li>
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<li class='tc'></li>
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<li class='tr'>watchexec(1)</li>
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</ol>
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<h2 id="NAME">NAME</h2>
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<p class="man-name">
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<code>watchexec</code> - <span class="man-whatis">execute commands when watched files change</span>
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</p>
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<h2 id="SYNOPSIS">SYNOPSIS</h2>
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<p>watchexec [<code>--exts</code> | <code>-e</code> <var>extensions</var>]... [<code>--filter</code> | <code>-f</code> <var>pattern</var>]... [<code>--ignore</code> | <code>-i</code> <var>pattern</var>]... [<code>--restart</code> | <code>-r</code>] [<code>--clear</code> | <code>-c</code>] [<code>--postpone</code> | <code>-p</code>] [<code>--force-poll</code> <var>interval</var>] [<code>--debug</code> | <code>-d</code>] [<code>--no-vcs-ignore</code>] <var>cmd</var> [<var>argument</var>...]</p>
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<h2 id="DESCRIPTION">DESCRIPTION</h2>
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<p>Recursively monitors the current directory for changes, executing the command when a filesystem change is detected. By default, watchexec uses efficient kernel-level mechanisms to watch for changes.</p>
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<p>At startup, the specified <var>command</var> (passing any supplied <var>argument</var>s) is run once, and watchexec begins monitoring for changes.</p>
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<h2 id="OPTIONS">OPTIONS</h2>
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<dl>
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<dt class="flush"><var>cmd</var></dt><dd><p>Command to run when watched files are modified, and at startup, unless <code>--postpone</code> is specified. All <var>argument</var>s are passed to <var>cmd</var>.</p></dd>
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<dt><code>-e</code>, <code>--exts</code> <var>extensions</var></dt><dd><p>Comma-separated list of file extensions to filter by. Leading dots are allowed (.rs) are allowed. (This is a shorthand for <code>-f</code>).</p></dd>
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<dt><code>-f</code>, <code>--filter</code> <var>pattern</var></dt><dd><p>Ignores modifications from paths that do not match <var>pattern</var>. This option can be specified multiple times, where a match on any given pattern causes the path to trigger <em>command</em>.</p></dd>
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<dt><code>-i</code>, <code>--ignore</code> <em>pattern</em></dt><dd><p>Ignores modifications from paths that match <var>pattern</var>. This option can be specified multiple times, and a match on any pattern causes the path to be ignored.</p></dd>
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<dt><code>-r</code>, <code>--restart</code></dt><dd><p>Sends <code>SIGTERM</code> to the child process if it is still running when subsequent file modifications are detected, then waits for the child to exit.</p></dd>
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<dt><code>-c</code>, <code>--clear</code></dt><dd><p>Clears the screen before executing <var>command</var>.</p></dd>
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<dt><code>-p</code>, <code>--postpone</code></dt><dd><p>Postpone execution of <var>command</var> until the first file modification is detected.</p></dd>
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<dt><code>-d</code>, <code>--debug</code></dt><dd><p>Prints diagnostic messages to STDERR</p></dd>
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<dt><code>--force-poll</code> <var>interval</var></dt><dd><p>Poll for changes every <var>interval</var> ms instead of using system-specific notification mechanisms (such as inotify). This is useful when you are monitoring NFS shares.</p></dd>
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<dt><code>--no-vcs-ignore</code></dt><dd><p>Skip loading of version control system (VCS) ignore files. By default, watchexec loads .gitignore files in the current directory (or parent directories) and uses them to populate the ignore list.</p></dd>
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</dl>
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<h2 id="ENVIRONMENT">ENVIRONMENT</h2>
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<p>Processes started by watchexec have the <code>$WATCHEXEC_UPDATED_PATH</code> environment variable set to the path of the first modification observed. In addition, the <code>$WATCHEXEC_COMMON_PATH</code> environment variable is set to the common path of all observed modifications.</p>
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<h2 id="EXAMPLES">EXAMPLES</h2>
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<p>Rebuild a project when source files change:</p>
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<pre><code>$ watchexec make
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</code></pre>
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<p>Watch all HTML, CSS, and JavaScript files for changes:</p>
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<pre><code>$ watchexec -e html,css,js make
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</code></pre>
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<p>Run tests when source files change, clearing the screen each time:</p>
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<pre><code>$ watchexec -c make test
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</code></pre>
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<p>Launch and restart a node.js server</p>
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<pre><code>$ watchexec -r node app.js
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</code></pre>
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<ol class='man-decor man-foot man foot'>
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<li class='tl'></li>
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<li class='tc'>November 2016</li>
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<li class='tr'>watchexec(1)</li>
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</ol>
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</body>
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</html>
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