Most of the system administrators need to sync some of their local folder to remote folder. You can do this with a simple command line utility rsync. This will synchronizes files and directories from one location to another , securely by using delta encoding. It will synchronize files across the network
by transferring only data that has changed.

One of the handiest tools you'll ever have on Linux (and other *nix systems) is rsync. As the name implies, rsync is used to sync files on remote and local machines. You can use rsync to copy files to remote systems and back again, or to make backups to locally mounted hard drives.

The beauty of rsync is that its syntax and command line options are exactly the same for local and remote directories synchronizations,

rsync is a very useful and powerful program for doing incremental transfers of files, whether that is locally or remotely. It can, however, take a little while to familiarise yourself with how rsync works before you can get started with it however.

FlyBack is a snapshot-based backup tool based on rsync It creates successive backup directories mirroring the files you wish to backup, but hard-links unchanged files to the previous backup. This prevents wasting disk space while providing you with full access to all your files without any sort of recovery program.

rsync is an excellent and versatile backup tool, but it does have one drawback: you have to run it manually when you want to back up your data. Sure, you can use cron to create scheduled backups, but even this solution cannot provide seamless live synchronization.

I usually carry my laptop everywhere and do work on it, but I do also need to work at my desktop PC, so I need to synchronize the files on the two machines. I have used several sync tools in the past, ranging from simple commands like scp and rsync to utilities like Krusader, which includes a way to synchronize directories on different machines. Recently I started using Unison.

rsync is an open source utility that provides fast incremental file transfer. rsync uses the "rsync algorithm" which provides a very fast method synchronization of two server
.

Backup like a PRO using one most popular linux backup tool alternatives called rsync. RSync backups data and does it very clean and well. Rsync only transfers those data that have been modified and changed so that the destination host has an exact replica from the source host.