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Switching user inside a shell script doesn't seem to work

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Top Forums Shell Programming and Scripting Switching user inside a shell script doesn't seem to work
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Old 03-24-2014
In this first code sample that u gave, all the $ symbol were given without escaping them. So what the shell was doing was expanding the variables first and then pass it to the su command. This variables being undefined in the shell in which you invoked them were expanded as blank and then passed to the su. So when you try to print them into a file using echo the actual variables that were getting printed was the one in the main shell and the not the one that was intended,i.e, the One which are in su.
That being said what I did was escape all the characters that might be expanded in the main shell and then pass it to su so that unwantef shell substitution/expansion do not take place.

That also being said the best approach to your issue would be to create another script which does all the things that the other user does and then call that script while you do su. That way you can avoid all these confusion.
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LEARN ABOUT OPENSOLARIS

script

script(1)							   User Commands							 script(1)

NAME

       script - make record of a terminal session

SYNOPSIS

       script [-a] [filename]

DESCRIPTION

       The  script  utility  makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
       record is saved in the file typescript. See WARNINGS.

       The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
       when the forked shell exits or when Control-d is typed.

OPTIONS

       The following option is supported:

       -a    Appends the session record to filename, rather than overwriting it.

NOTES

       script places everything that appears on the screen in filename, including prompts.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

WARNINGS

       script  can  pose  a  security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
       privileged user, that is, root. Be sure that typescript is not a link before running script.

SunOS 5.11							    30 Jan 2004 							 script(1)