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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>Chown Task</title> </head> <body> <h2><a name="Chown">Chown</a></h2> <p><em>Since Ant 1.6.</em></p> <h3>Description</h3> <p>Changes the owner of a file or all files inside specified directories. Right now it has effect only under Unix. The owner attribute is equivalent to the corresponding argument for the chown command.</p> <p><a href="../CoreTypes/fileset.html">FileSet</a>s, <a href="../CoreTypes/dirset.html">DirSet</a>s or <a href="../CoreTypes/filelist.html">FileList</a>s can be specified using nested <code><fileset></code>, <code><dirset></code> and <code><filelist></code> elements.</p> <p>Starting with Ant 1.7, this task supports arbitrary <a href="../CoreTypes/resources.html#collection">Resource Collection</a>s as nested elements.</p> <p>By default this task will use a single invocation of the underlying chown command. If you are working on a large number of files this may result in a command line that is too long for your operating system. If you encounter such problems, you should set the maxparallel attribute of this task to a non-zero value. The number to use highly depends on the length of your file names (the depth of your directory tree) and your operating system, so you'll have to experiment a little. POSIX recommends command line length limits of at least 4096 characters, this may give you an approximation for the number you could use as initial value for these experiments.</p> <p>By default this task won't do anything unless it detects it is running on a Unix system. If you know for sure that you have a "chown" executable on your PATH that is command line compatible with the Unix command, you can use the task's os attribute and set its value to your current os.</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 file or directory of which the owner must be changed.</td> <td valign="top" valign="middle">Yes or nested <code><fileset/list></code> elements.</td> </tr> <tr> <td valign="top">owner</td> <td valign="top">the new owner.</td> <td valign="top" align="center">Yes</td> </tr> <tr> <td valign="top">parallel</td> <td valign="top">process all specified files using a single <code>chown</code> command. Defaults to true.</td> <td valign="top" align="center">No</td> </tr> <tr> <td valign="top">type</td> <td valign="top">One of <i>file</i>, <i>dir</i> or <i>both</i>. If set to <i>file</i>, only the owner of plain files are going to be changed. If set to <i>dir</i>, only the directories are considered.<br> <strong>Note:</strong> The type attribute does not apply to nested <i>dirset</i>s - <i>dirset</i>s always implicitly assume type to be <i>dir</i>.</td> <td align="center" valign="top">No, default is <i>file</i></td> </tr> <tr> <td valign="top">maxparallel</td> <td valign="top">Limit the amount of parallelism by passing at most this many sourcefiles at once. Set it to <= 0 for unlimited. Defaults to unlimited.</td> <td align="center" valign="top">No</td> </tr> <tr> <td valign="top">verbose</td> <td valign="top">Whether to print a summary after execution or not. Defaults to <code>false</code>.</td> <td align="center" valign="top">No</td> </tr> <tr> <td valign="top">os</td> <td valign="top">list of Operating Systems on which the command may be executed.</td> <td align="center" valign="top">No</td> </tr> <tr> <td valign="top">osfamily</td> <td valign="top">OS family as used in the <a href="../CoreTasks/conditions.html#os"><os></a> condition.</td> <td align="center" valign="top">No - defaults to "unix"</td> </tr> </table> <h3>Examples</h3> <blockquote><pre> <chown file="${dist}/start.sh" owner="coderjoe"/> </pre> </blockquote> <p>makes the "start.sh" file belong to coderjoe on a UNIX system.</p> <blockquote> <pre> <chown owner="coderjoe"> <fileset dir="${dist}/bin" includes="**/*.sh"/> </chown> </pre> </blockquote> <p>makes all ".sh" files below <code>${dist}/bin</code> belong to coderjoe on a UNIX system.</p> <blockquote> <pre> <chown owner="coderjoe"> <fileset dir="shared/sources1"> <exclude name="**/trial/**"/> </fileset> <fileset refid="other.shared.sources"/> </chown> </pre> </blockquote> <p>makes all files below <code>shared/sources1</code> (except those below any directory named trial) belong to coderjoe on a UNIX system. In addition all files belonging to a FileSet with <code>id</code> <code>other.shared.sources</code> get the same owner.</p> <blockquote> <pre> <chown owner="webadmin" type="file"> <fileset dir="/web"> <include name="**/*.cgi"/> <include name="**/*.old"/> </fileset> <dirset dir="/web"> <include name="**/private_*"/> </dirset> </chmod> </pre> </blockquote> <p>makes cgi scripts, files with a <code>.old</code> extension or directories beginning with <code>private_</code> belong to the user named webadmin. A directory ending in <code>.old</code> or a file beginning with <code>private_</code> would remain unaffected.</p> </body> </html>
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