How do I only backup the difference?

michaelchen6 · 11-25-2008, 08:01 PM

It takes me too much time to backup my project source code and documents every day. Is there any easy way to backup only the difference from previous backup? I am using Fedora 9.

AuroraCA · 11-25-2008, 08:27 PM

rsync has an archive mode (-a, --archive archive mode; equals -rlptgoD (no -H,-A,-X))
which makes a copy of the file(s). The next time the rsync command is run with the '-a, --archive' flag set only the files which have been changed since the last copy will be copied.

pentode · 11-25-2008, 08:50 PM

Take a look at rsnapshot. It handles differential backups very efficiently - based on the rsync engine.

r3sistance · 11-25-2008, 09:01 PM

Since you mention "source code", might I suggest revision control software(RCS) of some sort?