These commands are obtained with reference from http://www.makemacwork.com/category/time-machine. Other recommended readings includes http://www.afp548.com/article.php?story=20080109213724586.
Exclude Files From Time Machine Backup:
sudo defaults write /Library/Preferences/com.apple.TimeMachine SkipPaths -array-add "PATH-ONE" "PATH-TWO"
Change Regular Time Machine Backup Intervals:
sudo defaults write /System/Library/LaunchDaemons/com.apple.backupd-auto StartInterval -int SECONDS
OR
chmod 644 /System/Library/LaunchDaemons/com.apple.backupd-auto
Schedule Time Machine Backups:
/System/Library/CoreServices/backupd.bundle/Contents/Resources/backupd-helper &
Prevent Unwanted Time Machine Dialogs:
defaults write com.apple.TimeMachine DoNotOfferNewDisksForBackup -bool YES