Hi Todd,
why don't you just use setuid ?
http://en.wikipedia.org/wiki/Setuid

You just change the script owner or group to root.
And put the s bit with the chmod command.
That's all.

Matthieu.

Le mardi 29 avril 2014 à 13:22 -0700, ToddAndMargo a écrit :
> 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
>