<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<html>
<head>
<meta http-equiv="Content-Language" content="en-us">
<link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
<title>Touch Task</title>
</head>
<body>
<h2><a name="touch">Touch</a></h2>
<h3>Description</h3>
<p>Changes the modification time of a resource and possibly creates it
at the same time. In addition to working with a single file, this Task
can also work on <a href="../CoreTypes/resource.html">resources</a> and
resource collections (which also includes directories). Prior to Ant
1.7 only FileSet or <a href="../CoreTypes/filelist.html">Filelist</a>
(since Ant 1.6) have been supported.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
<tr>
<td valign="top"><b>Attribute</b></td>
<td valign="top"><b>Description</b></td>
<td align="center" valign="top"><b>Required</b></td>
</tr>
<tr>
<td valign="top">file</td>
<td valign="top">The name of the file.</td>
<td valign="top" align="center">Unless a nested resource collection element
has been specified.</td>
</tr>
<tr>
<td valign="top">millis</td>
<td valign="top">Specifies the new modification time of the file
in milliseconds since midnight Jan 1 1970.</td>
<td valign="center" align="center" rowspan="2">No--datetime takes
precedence, however if both are omitted the current time is assumed.</td>
</tr>
<tr>
<td valign="top">datetime</td>
<td valign="top">Specifies the new modification time of the file.</td>
</tr>
<tr>
<td valign="top">pattern</td>
<td valign="top">SimpleDateFormat-compatible pattern string.
Defaults to MM/DD/YYYY HH:MM AM_or_PM or MM/DD/YYYY HH:MM:SS AM_or_PM.
<b>Since Ant 1.6.3</b></td>
<td valign="top" align="center">No</td>
</tr>
<tr>
<td valign="top">mkdirs</td>
<td valign="top">Whether to create nonexistent parent
directories when touching new files. <b>Since Ant 1.6.3</b></td>
<td valign="top" align="center">No, default <i>false</i>.</td>
</tr>
<tr>
<td valign="top">verbose</td>
<td valign="top">Whether to log the creation of new files.
<b>Since Ant 1.6.3</b></td>
<td valign="top" align="center">No, default <i>true</i>.</td>
</tr>
</table>
<h3>Parameters specified as nested elements</h3>
<h4>any resource collection</h4>
<p>You can use any number of nested resource collection elements to
define the resources for this task and refer to resources defined
elsewhere. <b>Note:</b> resources passed to this task must implement
the <code>org.apache.tools.ant.types.resources.Touchable</code>
interface, this is true for all filesystem-based resources like those
returned by path, fileset ot filelist.</p>
<p>For backwards compatibility directories matched by nested filesets
will be "touched" as well, use a <type> selector to suppress
this. This only applies to filesets nested into the task directly,
not to filesets nested into a path or any other resource
collection.</p>
<h4>mapper</h4>
<p><em>Since Ant 1.6.3,</em> a nested <a href="../CoreTypes/mapper.html">
mapper</a> can be specified. Files specified via nested
<code>fileset</code>s, <code>filelist</code>s, or the <code>file</code>
attribute are mapped using the specified mapper. For each file mapped,
the resulting files are touched. If the original file exists its
timestamp will be used. Otherwise the task settings (<code>millis</code>,
<code>datetime</code>) take effect.</p>
<h3>Examples</h3>
<pre> <touch file="myfile"/></pre>
<p>creates <code>myfile</code> if it doesn't exist and changes the
modification time to the current time.</p>
<pre> <touch file="myfile" datetime="06/28/2000 2:02 pm"/></pre>
<p>creates <code>myfile</code> if it doesn't exist and changes the
modification time to Jun, 28 2000 2:02 pm (14:02 for those used to 24
hour times).</p>
<pre> <touch datetime="09/10/1974 4:30 pm">
<fileset dir="src_dir"/>
</touch></pre>
<p>changes the modification time to Oct, 09 1974 4:30 pm of all files and directories
found in <code>src_dir</code>. </p>
<pre> <touch file="myfile" datetime="06/28/2000 2:02:17 pm"/></pre>
<p>creates <code>myfile</code> if it doesn't exist and changes the
modification time to Jun, 28 2000 2:02:17 pm (14:02:17 for those used to 24
hour times), if the filesystem allows a precision of one second - a
time close to it otherwise.</p>
<pre> <touch file="foo">
<mapper type="glob" from="foo" to="bar" />
</touch>
</pre>
<p>creates <code>bar</code> if it doesn't exist and changes the
modification time to that of <code>foo</code>.</p>
</body>
</html>
distrib
>
Scientific%20Linux
>
5x
>
x86_64
>
media
>
main
>
by-pkgid
>
384bb5c8febd3510675147b31bd8778e
>
files
>
149
