PHP executing System command

[abdul_zu]

Hi All,

I was trying to execute some root linux command using PHP but i found that from html folder i cannot execute all linux command. I have my Asterisk running on the Same Server, i wanted to check it from web browser using PHP if asterisk not working the system function of PHP will start my asterisk.

But i think i cannot run full command from PHP uising web browser. here is the code which i was trying to run.

<?php
echo '<pre>';
$last_line = system('asterisk', '-rx', $retval");
echo '
</pre>
<hr />Last line of the output: ' . $last_line . '
<hr />Return value: ' . $retval;
?> 

Can anyone help me how i can give this file for root command permission?

Also i fingure php.ini file but still i am not able to run the command. Here is what i did in php.ini.

safe_mode = Off
safe_mode_gid = Off
safe_mode_include_dir = /usr/sbin/asterisk
safe_mode_exec_dir = /var/www/html/asterisk/gui
safe_mode_allowed_env_vars = /usr/sbin/asterisk

Thank You

[Sayian]

Hmmmm i remember reading somthing in the manual about the use of `` around linux commands and it could perform them on the system.

For example

ls would give you a directory listing of the current directory.

HTH

[abdul_zu]

Hi Sayian,

'ls' command is working. But the root command like to starting some service or deleting files are not working. Because full root command need some permission to run it.

Any idea?

[doomed_toast]

try using passthru instead of system

[kilbey1]

It wasn't clear from your comments if you have root access or not. From php.net system comments:

If you need to run root-level commands, such as to reboot a service, the utility 'sudo' will let you handle linux permissions. In our example we use 'sudo' to allow apache temporary root access to restart a service. We can then use:

system("sudo service dhcpd restart")

You also need to examine the /etc/sudoers file to specify what permissions to grant. Hope this helps someone!