File Sync Software
man rsync is your friend! -a archive; equals -rlptgoD -r recurse into directories -l copy symlinks as symlinks -p preserve permissions -t preserve modification times -g preserve group -o preserve owner (super-user only!) -D preserve device and special files (super-user only!); equals –devices –special Other good ones to know, especially if you’re syncing to another r/w machine and not just pushing to a read-only backup: -v verbose -L transform symlink into referent file/dir -h human-readable numbers -u update; skip files that are newer on the receiver -c skip based on checksum, not mod-time & size -P progress bar; keep partially transferred files; equals –partial –progress For your purpose, I typically use: rsync -rLptgoDPhu If you don’t want to sync symlinked stuff, then: rsync -aPhu
Finally, a no-cost and secure tool for transferring terabytes of data between your computers... without ever touching The Cloud!
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This is a fantastic article on implementing a backup system with Bittorrent sync: The Modern Scientist—Torrential File Synchronization.
Folder Sync Pro
A distributed file synchronization client for Mac and Windows. $10 per client.