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<?php $str = exec("ping -n 1 -w 1 172.19.144.10", $input, $result); if ($result == 0){ echo "<img src=\"on.png\">"; }else{ echo "<img src=\"off.png\">"; } ?>
Output for git.master, git.master_jit, rfc.property-hooks
Warning: exec(): Unable to fork [ping -n 1 -w 1 172.19.144.10] in /in/X6eBA on line 2 <img src="off.png">

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