Ruby：将环境变量传递给sudo脚本？

Question

我有关于Shell out from ruby while setting an environment variable的后续问题。我尝试通过sudo将环境变量提供给shell脚本，但不成功。

这是示例单行脚本，＆＃34; /usr/bin/wrapper.sh"。

echo $MYVAR

测试，

$ irb
> system({'MYVAR' => "42"}, "echo $MYVAR")        ==> GOOD
> system({'MYVAR' => "42"}, "wrapper.sh")         ==> GOOD
> system({'MYVAR' => "42"}, "sudo echo $MYVAR")   ==> GOOD
> system({'MYVAR' => "42"}, "sudo wrapper.sh")    ==> NOT GOOD

感谢您的帮助。

Answer 1

你需要sudo -E

$ irb
>> system({'MYVAR' => "42"}, "sudo wrapper.sh")
=> true
>> system({'MYVAR' => "42"}, "wrapper.sh")
42
=> true
>> system({'MYVAR' => "42"}, "sudo -E wrapper.sh")
42
=> true
>>