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

So what does your php error log file say wht is happening?

arkascha
– arkascha

2018-10-27 14:49:57 +00:00
Commented Oct 27, 2018 at 14:49 — arkascha
– arkascha, Commented Oct 27, 2018 at 14:49
Possible duplicate of Run Bash Command from PHP

Cecil Merrell
– Cecil Merrell

2018-10-27 15:00:41 +00:00
Commented Oct 27, 2018 at 15:00 — Cecil Merrell
– Cecil Merrell, Commented Oct 27, 2018 at 15:00

art · Accepted Answer · 2018-10-27 16:07:15Z

1

this will fix ur problem

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

answered Oct 27, 2018 at 16:07

art

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Comments

Николай Лубышев · Accepted Answer · 2018-10-27 15:16:37Z

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, 2018 at 15:16

answered Oct 27, 2018 at 14:53

Николай Лубышев

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4 Comments

Gloytos htyqo Over a year ago

is not writing to test1.txt thats the problem

Николай Лубышев Over a year ago

I think trouble is: you are do not define path to test1.txt: echo "test" > /var/www/TEST1.txt

Gloytos htyqo Over a year ago

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

Николай Лубышев Over a year ago

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?

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