about su user to run schedule job

QWE123 · 07-03-2015, 02:29 AM

I have a script , the content is as below .

#vi my_script

Code:

su - userA

if ..
then 
..
else

the script do the command "su" to another user first then run the following command , but I found that the output is difference to directly su to the user on the shell , and then run the script , as below .

# su - userA
$ whoami
userA
$ my_script

would advise if I want to use first method - embed the su in the script , but have the SAME ouput as the second method , how to do it ? thanks

cliffordw · 07-03-2015, 03:10 AM

Hi there,

Putting a sequence of commands into a script isn't quite the same as typing the same sequence on the command line.

In this case, if you run your sequence manually, you're running the "whoami" command inside "su". In the script form, the "su" completes (and returns you to the root user) before running the next command.

One easy solution might be to do the su outside of the script, i.e. use the command:

Code:

su - userA /path/to/my_script

in your schedule.

Alternately, if you have to do the "su" from within the script, something like this might help:

Code:

#!/bin/bash
MYUSER="userA"                                                                                                                      
if [ "$USER" != "$MYUSER" ]
then
    /usr/bin/su - $MYUSER $0 $*
    exit $?
fi

# Rest of original script goes here...
if ..
then 
..
else
..
fi

Note that you'll have to call my_script with a full path, or hard code the path on line 5 above instead of $0 for this to work, as you'll be in a different directory after the "su".

Good luck!

JaseP · 07-03-2015, 03:34 AM

Is the following what you are trying to do???

http://superuser.com/questions/17086...-specific-user