Terminal
tmux – Cheatsheet | Shortcuts (screen like program) – Hawkhost
tmux Tutorial | Split terminal window easily | Split Tutorial – Shortcuts
Sync – rsync / csync / etc
http://everythinglinux.org/rsync/
http://linux.about.com/library/cmd/blcmdl1_rsync.htm
http://www.csync.org/
http://www.openlogic.com/wazi/bid/188061/Unison-Makes-Two-Way-File-Sync-Simple
http://anouar.im/2011/12/how-to-backup-with-rsync-tar-gpg-on-osx.html
Assigning multiple addresses
IP Help – http://linux-ip.net/html/tools-ip-address.html
Using the following command, we can configure Virtual IPs in the Linux box at run-time without re-booting the machine or re-starting the network.
/sbin/ip addr add 172.19.1.2/32 dev eth0
/sbin/ip addr add 172.19.1.3/32 dev eth0
The same interfaces can be made down by using the following command.
/sbin/ip addr del 172.19.1.2/32 dev eth0
/sbin/ip addr del 172.19.1.3/32 dev eth0