How to solve the problem of insufficient permissions for calling Linux commands by PHP, phplinux_PHP tutorial

Solution to the problem of insufficient permission for PHP to call Linux commands, phplinux

Business background: yourcmd is my linux program. It has very strict permission requirements. When using php to execute yourcmd program

System: CentOS 6.3

apache is the execution user of php

Use the exec function to execute the program /usr/local/yourcmd/sbin/yourcmd on the linux system

The php code is as follows:

Copy code The code is as follows:

$conf_file = "/var/www/html/webroot/test.tmp";
$command = "sudo /usr/local/yourcmd/sbin/yourcmd -t -f {$conf_file}";
exec($command,$out);
print_r($out);

The test result is no permission

Copy code The code is as follows:

Array ( [0] => sudo: no tty present and no askpass program specified )

Solution steps:

Copy code The code is as follows:

$ visudo

1) Comment out the following lines

Copy code The code is as follows:

#Defaults requiretty

2) Add the following
at the end of the file

Copy code The code is as follows:

apache ALL=(ALL) NOPASSWD: ALL
Cmnd_Alias ​​yourcmd = /usr/local/yourcmd/sbin/yourcmd

Final test results

Copy code The code is as follows:

Array ( [0] => Warning: memory is too small: 1044725760 [1] => test configure is ok )

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