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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They malfunction when you open windows
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