IT
Named
Manually updating a Dynamic controlled zone
"If you have to edit the zone files of dynamic zones manually while the DNS server is running, you'll have to freeze the zones with # rndc freeze <myzone> before editing and unfreeze them with # rndc thaw <myzone> after editing. This is because named(8) has internal state information and external journal files attached to dynamic zones that have to be kept in sync with the zone files[1]".
Rsync
To delete files in the target if they disappeared from the source, then add the --delete option to your command. For example:
rsync -avh source/ dest/ --delete
NB: -avh is for --archive --verbose --human-readable[2].
Migration of folders to a new server
rsync -av /root/ root@newicecube.pnzone.net:/root/ --delete
rsync -av /home/ root@newicecube.pnzone.net:/home/ --delete
rsync -av /var/www/ root@newicecube.pnzone.net:/var/www/ --delete
rsync -av /usr/local/www/ root@newicecube.pnzone.net:/usr/local/www/ --delete
rsync -av /usr/local/etc/ root@newicecube.pnzone.net:/usr/local/etc/ --delete
rsync -av /var/log/ root@newicecube.pnzone.net:/var/log/oldice3/ --delete
rsync -av /etc/ root@newicecube.pnzone.net:/etc/oldice3 --delete
rsync -av /var/awstats/ root@newicecube.pnzone.net:/var/awstats/ --delete