Sudoers Datei richtig einstellen

# User privilege specification
root    ALL=(ALL:ALL) ALL
www-data  ALL=(ALL) NOPASSWD: /home/steam/steamcmd.sh

$ cd /var/www
$ ls
form.html  index.html  phpinfo.php  steam-cmd-exec.php  test.php
$ php steam-cmd-exec.php
[sudo] password for www-data:

root@steam:~# su www-data
$ ./home/steam/stemcmd.sh +quit
sh: 1: ./home/steam/stemcmd.sh: Permission denied
$