Execute help command and check its output
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<?php
$command = "help";
$logged_in = explode(' ', shell_exec($command));
for ($i = 0; $i < count($logged_in); $i++) {
if ($argv[1] == trim($logged_in[$i])) {
$found_user = 1;
}
}
if($found_user) {
print "User $argv[1] is currently logged inn";
} else {
print "User $argv[1] is NOT currently logged inn";
}
?>
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