Syncing Files
 

Hello,

We have to sync 2 directories. The problem is both the directories are huge. Directory A is 40GB and Directory B is 3 GB. We want to sync Directory B to A. We would like to do the following:

1) Both A & B has lot of same files and directories with different time stamps. If B has an updated directory or file we would like to sync that to A ( overwriting those in A ) . If A has the updated one, then that file shouldn't be synced.

2) Sync all files / Directories in B that are not present in A to A.

3) We have to ensure no data loss.

How is this done? Can this be done with "rsync". Please provide the different options of rsync for this.

Regards
Shankar

Yes, rsync is very good for this.

Read Everything Linux - A Tutorial on Using Rsync and rsync examples (and other pages at rsync.samba.org).

Then study man rsync.

Hello,

thanks for the reply

1) ".............................If A has the updated one, then that file shouldn't be synced."


can this be achieved with rsync? how is this done ? "-c" option with rsync?


regards
Shankar

You want the option

You might want to look into using unison instead. This sounds like just the kind of thing it's designed for:

http://www.cis.upenn.edu/~bcpierce/unison/

Thank You SecretCode! -u option did the trick

Appreciate it.

Regards
Shankar