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| <title>The GNU Fortran Compiler: CHMOD</title> |
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| <a name="CHMOD-_002d_002d_002d-Change-access-permissions-of-files"></a> |
| <h3 class="section">8.48 <code>CHMOD</code> — Change access permissions of files</h3> |
| <a name="index-CHMOD"></a> |
| <a name="index-file-system_002c-change-access-mode"></a> |
| |
| <dl compact="compact"> |
| <dt><em>Description</em>:</dt> |
| <dd><p><code>CHMOD</code> changes the permissions of a file. |
| </p> |
| <p>This intrinsic is provided in both subroutine and function forms; however, |
| only one form can be used in any given program unit. |
| </p> |
| </dd> |
| <dt><em>Standard</em>:</dt> |
| <dd><p>GNU extension |
| </p> |
| </dd> |
| <dt><em>Class</em>:</dt> |
| <dd><p>Subroutine, function |
| </p> |
| </dd> |
| <dt><em>Syntax</em>:</dt> |
| <dd><table> |
| <tr><td width="80%"><code>CALL CHMOD(NAME, MODE[, STATUS])</code></td></tr> |
| <tr><td width="80%"><code>STATUS = CHMOD(NAME, MODE)</code></td></tr> |
| </table> |
| |
| </dd> |
| <dt><em>Arguments</em>:</dt> |
| <dd><table> |
| <tr><td width="15%"><var>NAME</var></td><td width="70%">Scalar <code>CHARACTER</code> of default kind with the |
| file name. Trailing blanks are ignored unless the character |
| <code>achar(0)</code> is present, then all characters up to and excluding |
| <code>achar(0)</code> are used as the file name.</td></tr> |
| <tr><td width="15%"><var>MODE</var></td><td width="70%">Scalar <code>CHARACTER</code> of default kind giving the |
| file permission. <var>MODE</var> uses the same syntax as the <code>chmod</code> utility |
| as defined by the POSIX standard. The argument shall either be a string of |
| a nonnegative octal number or a symbolic mode.</td></tr> |
| <tr><td width="15%"><var>STATUS</var></td><td width="70%">(optional) scalar <code>INTEGER</code>, which is |
| <code>0</code> on success and nonzero otherwise.</td></tr> |
| </table> |
| |
| </dd> |
| <dt><em>Return value</em>:</dt> |
| <dd><p>In either syntax, <var>STATUS</var> is set to <code>0</code> on success and nonzero |
| otherwise. |
| </p> |
| </dd> |
| <dt><em>Example</em>:</dt> |
| <dd><p><code>CHMOD</code> as subroutine |
| </p><div class="smallexample"> |
| <pre class="smallexample">program chmod_test |
| implicit none |
| integer :: status |
| call chmod('test.dat','u+x',status) |
| print *, 'Status: ', status |
| end program chmod_test |
| </pre></div> |
| <p><code>CHMOD</code> as function: |
| </p><div class="smallexample"> |
| <pre class="smallexample">program chmod_test |
| implicit none |
| integer :: status |
| status = chmod('test.dat','u+x') |
| print *, 'Status: ', status |
| end program chmod_test |
| </pre></div> |
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