Incremental Backup

Can any one give me detail about incremental backup and how to apply it if i want to implement it.... thanks you very much

 

You can use rdiff-backup.

For example have a look here.

 

thank you for your reply but i want to implement incremental backup in my project of backup for my degree...........

 

i studied incremental backup but i stuck at one point ...... if we add some thing to a block which is in the begning then every block below it is destroyed so i have to backup all blocks or any method to get the change

 

rdiff-backup lets you create incremental backups.

 

i don't want to use incremental backup, i want to implement it in my own software....... i need algo which i can implement