<h1 id="chmod">CHMOD</h1>

<p>CHMOD file, mode</p>

<p>Change permissions of a file. The string <code>file</code> holds the

file name and follows OS file naming conventions. <code>mode</code>

provides the file permission and must be compatible with system call

chmod()‘s ’mode’ parameter.</p>

<p>See ACCESS to get information on file permissions.</p>

<h2 id="linux">Linux</h2>

<p><code>mode</code> is a number best represented in octal: 0oUGO with

U: User; G: Group; O: Other</p>

<p>U, G and O are each defined the following way:</p>

<tr class="header">

<th style="text-align: center;">Value</th>

<th style="text-align: center;">Permission</th>

<tr class="odd">

<td style="text-align: center;">0</td>

<td style="text-align: center;">no</td>

<tr class="even">

<td style="text-align: center;">1</td>

<td style="text-align: center;">x (execute)</td>

<tr class="odd">

<td style="text-align: center;">2</td>

<td style="text-align: center;">w (write)</td>

<tr class="even">

<td style="text-align: center;">3</td>

<td style="text-align: center;">w + x</td>

<tr class="odd">

<td style="text-align: center;">4</td>

<td style="text-align: center;">r (read)</td>

<tr class="even">

<td style="text-align: center;">5</td>

<td style="text-align: center;">r + x</td>

<tr class="odd">

<td style="text-align: center;">6</td>

<td style="text-align: center;">r + w</td>

<tr class="even">

<td style="text-align: center;">7</td>

<td style="text-align: center;">r + w + x</td>

<h3 id="example">Example</h3>

<pre><code>&#39; Make myfile available to anyone (read/write)

CHMOD &quot;myfile.bas&quot;, 0o666

&#39; Make myfile available to anyone (execute/read/write)

CHMOD &quot;myfile.bas&quot;, 0o777

&#39; Make myfile available to user (read/write)

&#39; All others only read

CHMOD &quot;myfile.bas&quot;, 0o644</code></pre>

<h2 id="windows">Windows</h2>

<p>in Windows the read-only flag can be set with <code>mode = 1</code>

and unset with <code>mode = -1</code></p>

<h3 id="example-1">Example</h3>

<pre><code>&#39; Make myfile read-only

CHMOD &quot;myfile.bas&quot;, 1

&#39; Make myfile read and write

CHMOD &quot;myfile.bas&quot;, -1</code></pre>