Executing SU in a bash script

Question

I'm running a remote bash script (using ssh -t 'bash doscript.sh'). In "doscript.sh" I have a sudo su anotheruser. At that point, the script seems to push a shell and I'm left in that "interactive" script and the rest of my script (doscript.sh) doesn't run unless I type "exit". Is there a workaround that gets around this problem?

Thanks in advance.

Here is the contents of my test script "doscript.sh":

sudo su diy
cd
pwd
whoami
exit
whoami

possible cross site duplicate of: http://stackoverflow.com/questions/1988249/how-do-i-use-su-to-execute-the-rest-of-the-bash-script-as-that-user — Ciro Santilli OurBigBook.com, May 24 '14 at 06:31

score 3 · Accepted Answer · answered Jan 12 '13 at 19:45

3

sudo starts a shell unless you instruct it otherwise.

It looks like you actually want to run this script as another user. To do that, try something like this:

#!/bin/bash
if [ `id -nu` != diy ]; then
    sudo -u diy $0 # Re-run this script as user diy
else
    # Everything you want to do goes here
fi

Keep in mind that /etc/sudoers must be set up to allow the original user to run this script as the new user.

answered Jan 12 '13 at 19:45

Michael Hampton

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Allthough for bash (not bourne shell) it's more convenient to use `if [[ $(id -un) != diy ]]; then..` form of checking. – Valentin Bajrami Jan 14 '13 at 13:08

score 0 · Answer 2 · answered Jan 12 '13 at 19:43

0

su as used in you script only runs the su line itself as the other user.

Use su - otheruser -c "cmds to execute".

answered Jan 12 '13 at 19:43

Andreas Florath

294
1
6

Executing SU in a bash script

2 Answers2

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