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*¥Ð¥Ã¥¯¥¹¥é¥Ã¥·¥å
 <?php
 	echo '<pre>' . `ls` . '</pre>';
 ?>
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*shell_exec()
 <?php
 	$results = shell_exec('ls');
 	echo '<pre>' . $results . '</pre>';
 ?>
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*passthru()
 <?php
 	echo '<pre>';
 	passthru('ls', $return_value);
 	echo '</pre>';
 	echo '<hr />' . $return_value;
 ?>
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*exec()
 <?php
 	$last_line = exec('ls', $return_lines);
 	echo '<pre>';
 	print_r($return_lines);
 	echo '</pre>';
 ?>
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*system()
 <?php
 	echo '<pre>';
 	$last_line = system('ls');
 	echo '</pre>';
 ?>
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