Usage of Rsync

Rsync is much faster than scp.

So whether it is a local file/directory copy or a remote copy, it is better to use rsync.

Basic parameters of Rsync

Notice:

The basic usage of rsync is:

rsync source destination

If there is a / at the end of the source, which means /*, it means that only the files in the directory are copied, excluding the directory itself
If there is no / in the source, it means that the directory and the files in the directory are copied to the destination.

First, the operation of local files and directories

rsync -zvh backup.tar /tmp/backups/  
rsync -avzh /root/rpmpkgs /tmp/backups/

Second, the operation of remote files

rsync -avz rpmpkgs/ root@192.168.0.101:/home/  
rsync -avzh root@192.168.0.100:/home/tarunika/rpmpkgs /tmp/myrpms

3. Execute rsync through ssh, -e parameter

rsync -avzhe ssh root@192.168.0.100:/root/install.log /tmp/  
rsync -avzhe ssh backup.tar root@192.168.0.100:/backups/

Fourth, display the transmission process

rsync -avzhe ssh --progress /home/rpmpkgs root@192.168.0.100:/root/rpmpkgs

5. Exclusion and inclusion of files

rsync -avze ssh --include 'R*' --exclude '*' root@192.168.0.101:/var/lib/rpm/ /root/rpm

6. Complete synchronization --delete, the source and destination remain exactly the same

rsync -avz --delete root@192.168.0.100:/var/lib/rpm/ .

7. Limit the maximum size of files to be transferred, files larger than 200k will not be transferred

rsync -avzhe ssh --max-size='200k' /var/lib/rpm/ root@192.168.0.100:/root/tmprpm

8. Delete the source file after the transfer is complete

rsync --remove-source-files -zvh backup.tar /tmp/backups/

9. Necessary for novices, do not actually do any operation, only display the process

rsync --dry-run --remove-source-files -zvh backup.tar /tmp/backups/

10. Speed limit, 500kb*8=4M, speed limit is 4MB.

rsync --bwlimit=500 -avzhe ssh  /var/lib/rpm/  root@192.168.0.100:/root/tmprpm/  
rsync只同步变动的部分，如果要同步整个部分，用W参数