Re: shell script how to switch users?
Use the -c option with su, and call a new script to run as that user.
In case you aren't sure about that option, use it as follows:
su user2 -c user2script.sh
If you only want to run one command as user2, you could simply insert
that command after the -c instead.
su user2 -c whoami
A side note, if the command is more than one word, you must enclose it
in quotes. For example:
su -c 'find / -name \*.c -print' user2
(obviously the order of -c command and the user is interchangeable).
Jacques B.