php shell_exec can run command but not sh file

Question

from PHP I can run commands with shell_exec but can't run bash files

I run this command

 sudo ls /var/www/

and i get results

 /var/www/1.sh 
 /var/www/2.sh 
 /var/www/3.sh

but when I run this command nothing happens

 $output = shell_exec('sudo sh /var/www/1.sh > /dev/null 2>&1');
 echo "<pre>$output</pre>";

In 1.sh i added this code

   #!/bin/bash
/usr/bin/echo "test" > TEST1.txt

it works when i type in terminal ./1.sh so only from php is not working

Server: centos from PHP I think I have root premission to execute commands

Possible duplicate of [Run Bash Command from PHP](https://stackoverflow.com/questions/11052162/run-bash-command-from-php) — CecilMerrell aka bringrainfire, Oct 27 '18 at 15:00

Николай Лубышев · Answer 1 · 2018-10-27T15:16:37.897

1

Your bash script has output into the TEST1.txt file, not into console!

Try that:

#!/bin/bash
/usr/bin/echo "test"

Or like that

$output = shell_exec('sudo sh /var/www/1.sh 2>&1');
echo "<pre>" .file_get_contents('/var/www/TEST1.txt'). "</pre>";

That string are wrong!!!!

$output = shell_exec('sudo sh /var/www/1.sh 2>&1');

&1 don't have a reason, because don't have definition

$output = shell_exec('sudo sh /var/www/1.sh > /dev/null 2>&1');

In this case &1 === /dev/null

edited Oct 27 '18 at 15:16

answered Oct 27 '18 at 14:53

is not writing to test1.txt thats the problem – Gloytos htyqo Oct 27 '18 at 15:07
I think trouble is: you are do not define path to test1.txt: echo "test" > /var/www/TEST1.txt – Николай Лубышев Oct 27 '18 at 15:14
defined path but is same problem. if u run from terminal ./1.sh it create text1.txt but from php if i try to run 1.sh text1.txt is not created – Gloytos htyqo Oct 27 '18 at 15:58
Okey. May be user `www-data` (apache2 server) don't have a write permission to the `/var/www` (or where you are save test1.txt) directory? – Николай Лубышев Oct 27 '18 at 16:03

score 1 · Accepted Answer · answered Oct 27 '18 at 16:07

1

this will fix ur problem

$output = shell_exec('sudo /usr/bin/sh  /var/www/1.sh > /dev/null 2>&1');

answered Oct 27 '18 at 16:07

arlind

2 Answers2