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ant/docs/manual/OptionalTasks/scp.html
Steve Loughran 052dcecc5a doc updates 
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<html>
<head>
<meta http-equiv="Content-Language" content="en-us">
<link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
<title>SCP Task</title>
</head>
<body>
<h2><a name="scp">SCP</a></h2>
<h3>Description</h3>
<p><em>since Ant 1.6</em></p>
<p>Copies a file or FileSet to or from a (remote) machine running an SSH daemon.
FileSet <i>only</i> works for copying files from the local machine to a
remote machine.</p>
<p><b>Note:</b> This task depends on external libraries not included
in the Ant distribution. See <a
href="../install.html#librarydependencies">Library Dependencies</a>
for more information. This task has been tested with jsch-0.1.2 and later.</p>
<p>See also the <a href="scp.html">scp task</a></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 to copy. This can be a local path or a
remote path of the form <i>user[:password]@host:/directory/path</i>.
<i>:password</i> can be omitted if you use key based
authentication or specify the password attribute. The way remote
path is recognized is whether it contains @ character or not. This
will not work if your localPath contains @ character.</td>
<td valign="top" align="center">Yes, unless a nested
<code>&lt;fileset&gt;</code> element is used.</td>
</tr>
<tr>
<td valign="top">localFile</td>
<td valign="top">This is an alternative to the file attribute. But
this must always point to a local file. The reason this was added
was that when you give file attribute it is treated as remote if
it contains @ character. This character can exist also in local
paths. <em>since Ant 1.6.2</em></td>
<td valign="top" align="center">Alternative to file attribute.</td>
</tr>
<tr>
<td valign="top">remoteFile</td>
<td valign="top">This is an alternative to the file attribute. But
this must always point to a remote file. <em>since Ant 1.6.2</em></td>
<td valign="top" align="center">Alternative to file attribute.</td>
</tr>
<tr>
<td valign="top">todir</td>
<td valign="top">The directory to copy to. This can be a local path
or a remote path of the form <i>user[:password]@host:/directory/path</i>.
<i>:password</i> can be omitted if you use key based
authentication or specify the password attribute. The way remote
path is recognized is whether it contains @ character or not. This
will not work if your localPath contains @ character.</td>
<td valian="top" align="center">Yes</td>
</tr>
<tr>
<td valign="top">localTodir</td>
<td valign="top">This is an alternative to the todir
attribute. But this must always point to a local directory. The
reason this was added was that when you give todir attribute it is
treated as remote if it contains @ character. This character can
exist also in local paths. <em>since Ant 1.6.2</em></td>
<td valian="top" align="center">Alternative to todir attribute.</td>
</tr>
<tr>
<td valign="top">localTofile</td>
<td valign="top">Changes the file name to the given name while
receiving it, only useful if receiving a single file. <em>since
Ant 1.6.2</em></td>
<td valian="top" align="center">Alternative to todir attribute.</td>
</tr>
<tr>
<td valign="top">remoteTodir</td>
<td valign="top">This is an alternative to the todir
attribute. But this must always point to a remote directory.
<em>since Ant 1.6.2</em></td>
<td valian="top" align="center">Alternative to todir attribute.</td>
</tr>
<tr>
<td valign="top">remoteTofile</td>
<td valign="top">Changes the file name to the given name while
sending it, only useful if sending a single file. <em>since
Ant 1.6.2</em></td>
<td valian="top" align="center">Alternative to todir attribute.</td>
</tr>
<tr>
<td valign="top">port</td>
<td valign="top">The port to connect to on the remote host.</td>
<td valian="top" align="center">No, defaults to 22.</td>
</tr>
<tr>
<td valign="top">trust</td>
<td valign="top">This trusts all unknown hosts if set to yes/true.<br>
<strong>Note</strong> If you set this to false (the default), the
host you connect to must be listed in your knownhosts file, this
also implies that the file exists.</td>
<td valian="top" align="center">No, defaults to No.</td>
</tr>
<tr>
<td valign="top">knownhosts</td>
<td valign="top">This sets the known hosts file to use to validate
the identity of the remote host. This must be a SSH2 format file.
SSH1 format is not supported.</td>
<td valian="top" align="center">No, defaults to
${user.home}/.ssh/known_hosts.</td>
</tr>
<tr>
<td valign="top">failonerror</td>
<td valign="top">Whether to halt the build if the transfer fails.
</td>
<td valign="top" align="center">No; defaults to true.</td>
</tr>
<tr>
<td valign="top">password</td>
<td valign="top">The password.</td>
<td valign="top" align="center">Not if you are using key based
authentication or the password has been given in the file or
todir attribute.</td>
</tr>
<tr>
<td valign="top">keyfile</td>
<td valign="top">Location of the file holding the private key.</td>
<td valign="top" align="center">Yes, if you are using key based
authentication.</td>
</tr>
<tr>
<td valign="top">passphrase</td>
<td valign="top">Passphrase for your private key.</td>
<td valign="top" align="center">Yes, if you are using key based
authentication.</td>
</tr>
<tr>
<td valign="top">verbose</td>
<td valign="top">Determines whether SCP outputs verbosely to the
user. Currently this means outputting dots/stars showing the
progress of a file transfer. <em>since Ant 1.6.2</em></td>
<td valign="top" align="center">No; defaults to false.</td>
</tr>
</table>
<h3>Parameters specified as nested elements</h3>
<h4>fileset</h4>
<p><a href="../CoreTypes/fileset.html">FileSet</a>s are used to select
sets of files to copy.
To use a fileset, the <code>todir</code> attribute must be set.</p>
<h3>Examples</h3>
<p><b>Copy a single local file to a remote machine</b></p>
<pre>
&lt;scp file=&quot;myfile.txt&quot; todir=&quot;user:password@somehost:/home/chuck&quot;/&gt;
</pre>
<p><b>Copy a single local file to a remote machine with separate
password attribute</b></p>
<pre>
&lt;scp file=&quot;myfile.txt&quot; todir=&quot;user@somehost:/home/chuck&quot; password=&quot;password&quot;/&gt;
</pre>
<p><b>Copy a single local file to a remote machine using key base
authentication.</b></p>
<pre>
&lt;scp file=&quot;myfile.txt&quot;
todir=&quot;user@somehost:/home/chuck&quot;
keyfile=&quot;${user.home}/.ssh/id_dsa&quot;
passphrase=&quot;my extremely secret passphrase&quot;
/&gt;
</pre>
<p><b>Copy a single remote file to a local directory</b></p>
<pre>
&lt;scp file=&quot;user:password@somehost:/home/chuck/myfile.txt&quot; todir=&quot;../some/other/dir&quot;/&gt;
</pre>
<p><b>Copy a remote directory to a local directory</b></p>
<pre>
&lt;scp file=&quot;user:password@somehost:/home/chuck/*&quot; todir=&quot;/home/sara&quot;/&gt;
</pre>
<p><b>Copy a local directory to a remote directory</b></p>
<pre>
&lt;scp todir=&quot;user:password@somehost:/home/chuck/&quot;&gt;
&lt;fileset dir=&quot;src_dir&quot;/&gt;
&lt;/scp&gt;
</pre>
<p><b>Copy a set of files to a directory</b></p>
<pre>
&lt;scp todir=&quot;user:password@somehost:/home/chuck&quot;&gt;
&lt;fileset dir=&quot;src_dir&quot;&gt;
&lt;include name=&quot;**/*.java&quot;/&gt;
&lt;/fileset&gt;
&lt;/scp&gt;
&lt;scp todir=&quot;user:password@somehost:/home/chuck&quot;&gt;
&lt;fileset dir=&quot;src_dir&quot; excludes=&quot;**/*.java&quot;/&gt;
&lt;/scp&gt;
</pre>
<p><strong>Security Note:</strong> Hard coding passwords and/or usernames
in scp task can be a serious security hole. Consider using variable
substitution and include the password on the command line. For example:
<p>
<pre>
&lt;scp todir=&quot;${username}:${password}@host:/dir&quot; ...&gt;
</pre>
Invoking ant with the following command line:
<pre>
ant -Dusername=me -Dpassword=mypassword target1 target2
</pre>
Is slightly better, but the username/password is exposed to all users on an Unix
system (via the ps command). The best approach is to use the
<code>&lt;input&gt;</code> task and/or retrieve the password from a (secured)
.properties file.
<p>
<p><strong>Unix Note:</strong> File permissions are not retained when files
are copied; they end up with the default <code>UMASK</code> permissions
instead. This is caused by the lack of any means to query or set file
permissions in the current Java runtimes. If you need a permission-
preserving copy function, use <code>&lt;exec executable="scp" ... &gt;</code>
instead.
</p>
<hr><p align="center">Copyright &copy; 2003-2005 The Apache Software Foundation.
All rights Reserved.</p>
</body>
</html>
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