I'm a pretty Huge n00b when it comes to Linux
exec ('whoami', $output, $return);
echo $return;
// Outputs 127 Which means the command is not executing. I can get it to execute when I root into the server.
Any help would be greatly appreciated!
A:
If you try this:
<?php
exec('whoami');
?>
you should be presented with PHP's username.. If you try this:
<?php
exec('whoami', $output, $return);
print_r($output);
?>
you should see that $output is an array containing anything the shell output.
The return value, according to the PHP manual, "return status of the executed command will be written to this variable." - is that what you want?
Andy
2010-06-17 20:51:59
What I Really need is to exec pdftk, but any command I try to exec using the PHP function exec() does not work. Even if I try exec('whoami'); it returns 127. I'm thinking this is related to permissions or something, but I have no idea how or what to do to change the permissions to get this fixed.
Gamak
2010-06-17 20:55:47
I'm Running CentOS / Apache
Gamak
2010-06-17 20:56:32
Running this: exec('whoami', $output, $return);print_r($output); echo $return; Returns This: Array ( ) 127
Gamak
2010-06-17 21:00:49
Apparently the 127 code means "file not found". You probably just need to use the absolute path, ( e.g. /usr/local/bin/whoami ).
Andy
2010-06-17 21:06:30
+1
A:
127 exit status is indicative of a missing command. Perhaps whoami is not on the system or maybe your web server configuration has you jailed in some way or you are being restricted via safe_mode/open_basedir.
To verify you can try running:
exec('which whoami', $output, $return);
print_r($output);
echo $return;
If you are presented with an empty array and a return code of 0, then the whoami executable is currently inaccessible from your web server/PHP setup.
To check safe_mode, open_basedir settings, call phpinfo.
webbiedave
2010-06-17 21:25:30