Hi, I would like to know, how can i run the user ( su - Pepe) from a shell script passing the password for parameter or is there another command that do the same? because I run the command but the system gives me the password all time. I would to want what the proccess will be running automatic without what i have to put the password.

Amaury

This question is asked a lot. The best solution I've seen is to use the expect scripting language. Bundled with expect, is a demo program that does exactly what you're asking for. Here is a modified version of it that you should be able to modify:

#!/usr/local/bin/expect --
# wrapper to make passwd(1) be non-interactive
# username is passed as 1st arg, passwd as 2nd
# exutable only by root

set password [lindex $argv 1]
spawn /usr/bin/passwd [lindex $argv 0]
expect "password:"
send "$password\r"
expect "password:"
send "$password\r"
expect eof

If your system doesn't have expect, you can probably get it here at the expect home page:

http://expect.nist.gov/