shell script how to switch users?

[Rajiv Jaisankar]

On 1/4/07, Jacques B. <jjrboucher at gmail.com> wrote:
> On 1/4/07, Rajiv Jaisankar <rajiv.jaisankar at gmail.com> wrote:
> > Hi All,
> > i am not sure if this is the right mailing list for asking this question. I
> > would appreciate any help on this.
> >
> > I want to switch users using a shell script, i.e.
> > Say i am logged in as user1. I would like to say su - user2 in my script.
> >  I would be performing some operations as user "user2" as part of the script
> > after logging in as this user.
> > Finally i will be exiting back to user1 shell.
> >
> > How will i login as user2 through shell script?
> > How will i  execute scripts as user2 after logging in from shell script?
> > Even if i am able to login as user2
> > any commands after "su - user2" are not executed as user2. They are executed
> > only as user1 when i exit the
> > user2 shell.
> >
> > --
> > Regards,
> > Rajiv
> > --
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> >
> >
> Use the -c option with su, and call a new script to run as that user.
>
> I tried the following:
>
> test.sh script:
> #!/bin/bash
> echo "before su"
> su root -c ./rootscript.sh
> echo "after su"
> whoami
>
> rootscript.sh (located in the same directory hence why called by ./rootscript)
> #!/bin/bash
> echo "now in sub shell"
> whoami
> echo "exiting sub shell"
>
> It behaved exactly as you'd like.  Within the second script, I was
> root running the commands.
>
> Jacques B.
>
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Hi,
Thanks a lot for your quick responses.  After executing su - user2 -c
script . I am asked for password for user2. Is there any way through
we can we specify password too with this command.
- Rajiv