From: Brian Candler <b.candler@...>
Date: 2009-10-28T00:13:01+09:00
Subject: Re: how can I do a linux mount in a programmatic way ?

Jedrin wrote:
> If I do something like system('sudo mount .. ') then I don't really
> get any error codes back to see what happened because I just get the
> sudo return code here.

I think you should get the exit status of the program which sudo ran:

$ cat xxx.sh
exit 123
$ irb --simple-prompt
>> %x{sudo ./xxx.sh}
=> ""
>> $?
=> #<Process::Status: pid=28583,exited(123)>
>> $?.exitstatus
=> 123
>> 

[Ubuntu Hardy, sudo 1.6.9p10-1ubuntu3.5]

Otherwise, I don't know if there's a way to call the mount API directly 
from ruby.

Even if there was, remember that it wouldn't work unless the ruby script 
itself were running as root. That is: if you need 'sudo' to get root as 
in your original example, then it's always going to be in a separate 
process.
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