illegal command error code 127 in php exec function
Question
I am using this php code:
exec("unrar e file.rar",$ret,$code);
and getting an error code of illegal command ie 127 ... but when I am using this command through ssh its working ... because unrar is installed on the server ... so can anyone guess why exec is not doing the right stuff?
Solution
Try using the direct path of the application (/usr/bin/unrar of whatever), it sounds like php can't find the application.
OTHER TIPS
If you have chrooted apache and php, you will also want to put /bin/sh into the chrooted environment. Otherwise, the exec() or passthru() will not function properly, and will produce error code 127, file not found.
Since this comes up as a top answer in google, I wanted to share my fix:
The simple fix I had was to disable safe_mode in the php.ini file
; Safe Mode
; http://www.php.net/manual/en/ini.sect.safe-mode.php#ini.safe-mode
safe_mode = Off
thanx all for your response!!
I tried this
//somedir is inside the directory where php file is
chdir("somedir");
exec("/home/username/bin/unrar e /home/path/to/dir/file.rar");
and now it returned no exit code ... oher commands are doing file .. i tried mkdir etc .. :s
Just in case somebody else still gets this problem, take a look at the post here:
http://gallery.menalto.com/node/2639#comment-8638
Quote:
I found the problem. The problem was my security-paranoid OpenBSD. When upgrading from 3.1 to 3.2 they added:
- Apache runs chroot'd by default. To disable this, see the new -u option.
The chroot prevented Apache from accessing anything outside of a directory, so I moved everything into the apache directory including netpbm. Everything was accessible and executable, but I guess it was still in some sort of "safe mode" because the exec() always returned 127.
Anyway, running httpd with the -u option went back to the less secure non chroot'd apache startup, which allowed the exec() to work again.
ohkiee guyz thanx ... and yes there might be some errors with $PATH ... but with given full path its working :)
exec("/home/user/bin/unrar e /home/user/xxx/yyy/file.rar");