Hi I have 2 computers. I like to keep the home directories of the machines synchronized. I have put the hard drive of one into the other (yes, I know I could've used NFS or something, the first is broken right now). I have two directories, /home and /mnt/hdd.home . I would like some program to compare all files, if a file is in /home and not in /mnt/hdd.home, copy it over, and vice versa. If a file is changed in both places, copy them over to a temp directory and let me do it manually. Is there any tool to do this manually for me? If it matters, some files are binary, will that change it?

rsync will do exactly what you want.

well, you could use diff and patch on the home directory... but there is always cp -au ... oh, and rsync

Ok, thanks, I guess rsync it is , I'll look it up. Thanks!

In /home are many user application settings. If the same application is of a different version from one to the other, you may have issues trying to boot into those users accounts if you plan to re-boot into them after altering these files by using the settings from the other drive/user. You may want to exclude hidden files and directories where these settings are stored.