Are there specific permissions or settings that need to be configured for PHP to execute Linux commands successfully?

To execute Linux commands successfully in PHP, you need to ensure that the PHP script has the necessary permissions to run the commands. One common approach is to use the `exec()` function in PHP, which allows you to execute shell commands. Make sure that the user running the PHP script has the appropriate permissions to execute the desired command.

$output = shell_exec('ls -l');
echo "<pre>$output</pre>";