iank
/
libreCMC
forkad från libreCMC/libreCMC


			
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<h1>Class <code>luci.sys</code></h1>

<p></p>


<h2>Functions</h2>
<table class="function_list">

	<tr>
	<td class="name" nowrap><a href="#call">call</a>&nbsp;(...)</td>
	<td class="summary">
 
Execute a given shell command and return the error code 
 </td>
	</tr>

	<tr>
	<td class="name" nowrap><a href="#dmesg">dmesg</a>&nbsp;()</td>
	<td class="summary">
 
Retrieves the output of the "dmesg" command.</td>
	</tr>

	<tr>
	<td class="name" nowrap><a href="#exec">exec</a>&nbsp;(command)</td>
	<td class="summary">
 
Execute a given shell command and capture its standard output 
 </td>
	</tr>

	<tr>
	<td class="name" nowrap><a href="#getenv">getenv</a>&nbsp;(var)</td>
	<td class="summary">
 
Retrieve environment variables.</td>
	</tr>

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	<td class="name" nowrap><a href="#hostname">hostname</a>&nbsp;(String)</td>
	<td class="summary">
 
Get or set the current hostname.</td>
	</tr>

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	<td class="name" nowrap><a href="#httpget">httpget</a>&nbsp;(url, stream, target)</td>
	<td class="summary">
 
Returns the contents of a documented referred by an URL.</td>
	</tr>

	<tr>
	<td class="name" nowrap><a href="#mounts">mounts</a>&nbsp;()</td>
	<td class="summary">
 
Retrieve information about currently mounted file systems.</td>
	</tr>

	<tr>
	<td class="name" nowrap><a href="#reboot">reboot</a>&nbsp;()</td>
	<td class="summary">
 
Initiate a system reboot.</td>
	</tr>

	<tr>
	<td class="name" nowrap><a href="#syslog">syslog</a>&nbsp;()</td>
	<td class="summary">
 
Retrieves the output of the "logread" command.</td>
	</tr>

	<tr>
	<td class="name" nowrap><a href="#uniqueid">uniqueid</a>&nbsp;(bytes)</td>
	<td class="summary">
 
Generates a random id with specified length.</td>
	</tr>

	<tr>
	<td class="name" nowrap><a href="#uptime">uptime</a>&nbsp;()</td>
	<td class="summary">
 
Returns the current system uptime stats.</td>
	</tr>

</table>


<br/>
<br/>


<h2><a name="functions"></a>Functions</h2>
<dl class="function">


<dt><a name="call"></a><strong>call</strong>&nbsp;(...)</dt>
<dd>

 
Execute a given shell command and return the error code 


<h3>Parameters</h3>
<ul>
	
	<li>
	  ...: Command to call
	</li>
	
</ul>


<h3>Return value:</h3>
Error code of the command


</dd>


<dt><a name="dmesg"></a><strong>dmesg</strong>&nbsp;()</dt>
<dd>

 
Retrieves the output of the "dmesg" command. 


<h3>Return value:</h3>
String containing the current log buffer


</dd>


<dt><a name="exec"></a><strong>exec</strong>&nbsp;(command)</dt>
<dd>

 
Execute a given shell command and capture its standard output 


<h3>Parameters</h3>
<ul>
	
	<li>
	  command: Command to call
	</li>
	
</ul>


<h3>Return value:</h3>
String containg the return the output of the command


</dd>


<dt><a name="getenv"></a><strong>getenv</strong>&nbsp;(var)</dt>
<dd>

 
Retrieve environment variables. If no variable is given then a table 
 
containing the whole environment is returned otherwise this function returns 
the corresponding string value for the given name or nil if no such variable 
exists.


<h3>Parameters</h3>
<ul>
	
	<li>
	  var: Name of the environment variable to retrieve (optional)
	</li>
	
</ul>


<h3>Return values:</h3>
<ol>
	
	<li>String containg the value of the specified variable
	
	<li>Table containing all variables if no variable name is given
	
</ol>


</dd>


<dt><a name="hostname"></a><strong>hostname</strong>&nbsp;(String)</dt>
<dd>

 
Get or set the current hostname. 


<h3>Parameters</h3>
<ul>
	
	<li>
	  String: containing a new hostname to set (optional)
	</li>
	
</ul>


<h3>Return value:</h3>
String containing the system hostname


</dd>


<dt><a name="httpget"></a><strong>httpget</strong>&nbsp;(url, stream, target)</dt>
<dd>

 
Returns the contents of a documented referred by an URL. 


<h3>Parameters</h3>
<ul>
	
	<li>
	  url: The URL to retrieve
	</li>
	
	<li>
	  stream: Return a stream instead of a buffer
	</li>
	
	<li>
	  target: Directly write to target file name
	</li>
	
</ul>


<h3>Return value:</h3>
String containing the contents of given the URL


</dd>


<dt><a name="mounts"></a><strong>mounts</strong>&nbsp;()</dt>
<dd>

 
Retrieve information about currently mounted file systems. 


<h3>Return value:</h3>
Table containing mount information


</dd>


<dt><a name="reboot"></a><strong>reboot</strong>&nbsp;()</dt>
<dd>

 
Initiate a system reboot. 


<h3>Return value:</h3>
Return value of os.execute()


</dd>


<dt><a name="syslog"></a><strong>syslog</strong>&nbsp;()</dt>
<dd>

 
Retrieves the output of the "logread" command. 


<h3>Return value:</h3>
String containing the current log buffer


</dd>


<dt><a name="uniqueid"></a><strong>uniqueid</strong>&nbsp;(bytes)</dt>
<dd>

 
Generates a random id with specified length. 


<h3>Parameters</h3>
<ul>
	
	<li>
	  bytes: Number of bytes for the unique id
	</li>
	
</ul>


<h3>Return value:</h3>
String containing hex encoded id


</dd>


<dt><a name="uptime"></a><strong>uptime</strong>&nbsp;()</dt>
<dd>

 
Returns the current system uptime stats. 


<h3>Return value:</h3>
String containing total uptime in seconds


</dd>


</dl>


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