On 04/29/2014 12:37 PM, Mark Whidby wrote:
> On Tue, 2014-04-29 at 12:20 -0700, ToddAndMargo wrote:
>> Hi All,
>>
>> I have a bash script that need to be run as root.
>> In the script, I check to see if it is running as
>> root and flag the user to run appropriately.
>>
>> Is there a way to use "su" to prompt for the password
>> and continue the script if successful? (I would test for
>> $? after the prompt.)
>>
>> Currently "su" will just open a new shell as root.
>>
>> I can run a command inside "su", but what about the
>> other 200 lines of code?  :'(
>
> An interesting problem :-)
>
> Something like this seems to work but I haven't thought through
> the consequences of it, so be aware:
>
> -----cut here-----
> #!/bin/sh
>
> this_script=$(basename $0)
>
> if [ $(id -u) -ne 0 ]
> then
>    echo "Enter root's password"
>    su -c ./$this_script
>    exit
> fi
>
> echo "Hello world"
> echo "Running as $(id -u)"
> -----cut here-----
>
> You probably need to do something with $PATH to obviate the
> need for the "./" on the su line.
>

Hi Mark,

I get it.  Fascinating!

If not root, call myself a second time with "su"

Thank you!

-T

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