下面来看一个关于PHP调用Linux命令无权限的问题解决(visudo),希望文章对大家有帮助.
业务背景:yourcmd为我的linux程序,它对权限要求非常严格,当用php去执行yourcmd程序
系统:CentOS 6.3
apache是php的执行用户
用exec函数去执行linux系统上的程序/usr/local/yourcmd/sbin/yourcmd
php代码如下:
<?php $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);
测试结果为没有权限
Array ([0] => sudo: no tty present and no askpass program specified)
解决步骤:
$ visudo
1)注释以下行
#Defaults requiretty
2)在文件末尾加入以下
apache ALL=(ALL) NOPASSWD: ALL Cmnd_Alias yourcmd = /usr/local/yourcmd/sbin/yourcmd
最后测试结果:
Array ( [0] => Warning: memory is too small: 1044725760 [1] => test configure is ok )
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