how to copy updated files to the server automatically

[Maaz]

Hello Dear Gurus
there is a directory "/project" on a server(10.1.1.9).
I also have copy the "/project" directory from 10.1.1.9 to another server(10.1.1.10).
Now I want that whenever any file in /project/ directory on 10.1.1.9, updates/modified that file also automatically copies to the "/project" directory of 10.1.1.10
I know how to use 'scp', but what should i do, so that updated files will be automatically copied to the destination.

Regards
Maaz

[Ivan Ferreira]

I think that is better if you use rsync.

The rsync service can copy only files that where modified, so you can run a "cron" to continuously copy the files, but only the modified files will be copied.

There is also the posibility to run RAID on network block devices (NBD), to mirror the data.

[Rick Garland]

rdist or rsync are better choices for this task.

[Maaz]

Dear Ivan, and Rick Garland Many Thanks for the help.

1, Dear Ivan, and Rick what rpm should i have to install to work with rsync ? i m using rhel 3.0.
2, I dont know how to configure the rsync.. if u can plz guide me, i'll be highly thankfull to u all.
And if u can plz write me the syntax of cron, for my situation/scenario ?

Thanks n Regards
Maaz

[Rick Garland]

rpm -qa | grep -i rsync

I have the version rsync-2.6.3-1 installed.
You should get a return to the rpm command if the utility is installed.

As to cron
minutes hours day-of-month month day-of-week

So...
00 05 15 8 *
Says that at 0500 hrs on the 15th day of the 8th month

Not knowing what it is you are trying to accomplish, I would direct you to the man pages (man rsync) There are examples in the man pages that can help.

[Ivan Ferreira]

The configuration is easy (much like like sama), is better if you find in google a tutorial, because has several options.

Rsync works with a daemon, and a client that is the rsync command itselv (rsync -avz).

It uses rsh commands, so if you want security, find a document that describes how to use rsync with ssh.

Regards.