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Switch User in within a Shell Script

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# 1  
Old 10-07-2010
Switch User in within a Shell Script
Hi Experts,

I'm trying to write a shell script to stop few things where i have to use another user to execute a command. Otherwise it will not work.

Your help is really appreciated

Thanks,
This User Gave Thanks to Afi_Linux For This Post:
gc_sw
# 2  
Old 10-07-2010
Try:
Code:
su - user -c "command"

These 2 Users Gave Thanks to bartus11 For This Post:
Afi_Linux gc_sw
# 3  
Old 10-07-2010
A search on unix forum gave me these results:

https://www.unix.com/unix-advanced-ex...ll-script.html
This User Gave Thanks to panyam For This Post:
gc_sw
# 4  
Old 10-07-2010
Hi,

The following command is prompting for the password. Is there anyway to specify the password and it does not promt again?

su - user -c "command"
# 5  
Old 10-07-2010
  • You an wrap su in an expect script (exposing the password a bit),
  • or set up passwordless login for you-here to him-here using rsh/remsh/rexec/ssh/ssh2,
  • or hit some custom service like a web site running under that user
  • or have some sort of server/daemon process running or frequent cron under that user looking for some sort of message (file, named pipe, email, tcp/udp IP port or other similar network facility like netbui) to trigger the commands you need,
  • or write an setuid bit friendly C program or restricted shell owned by other id that can be executed by you. Setuid is not shell friendly, as it drops LD_LIBRARY_PATH or the like used for dynamic linking and must be compiled staticly or with -R to give it library path for every necessary lib file.
This User Gave Thanks to DGPickett For This Post:
Afi_Linux
# 6  
Old 10-07-2010
I have no issues with the exposing the password. What would be the exact command though?

Is this right? >> su - user/password -c "command"
# 7  
Old 10-07-2010
Man Page for su (OpenSolaris Section 1m) - The UNIX and Linux Forums

Expect-5.43.0

#!/usr/local/bin/expect --
# Name: autoexpect - generate an Expect script from watching a session
#
# Description:
#
# Given a program name, autoexpect will run that program. Otherwise
# autoexpect will start a shell. Interact as desired. When done, exit
# the program or shell. Autoexpect will create a script that reproduces
# your interactions. By default, the script is named script.exp.
# See the man page for more info.
#
# Author: Don Libes, NIST
# Date: June 30 1995
# Version: 1.4
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