Backup and restore accounts and password
 

Hi! I have two Linux Box, one as a server and the other as a backup. There are times when i need to configure the server and take in out from the network and make the backup active. My question is how to I copy the accounts, groups and password to the backup? Thanks!

Not sure if I understand your question right, but all you should have to do is make a backup copy of three files:
/etc/passwd
/etc/shadow
/etc/group