Install and use rsync

Install and use rsync


rsync is a free software computer program for Unix and Linux like systems.


Using rsync we can take backup/mirroring a directory tree of files from one machine to another machine or in a same machine.


To install rsync:


In  Ubuntu,
# apt-get install rsync


In  CentOS/Fedora Core Linux,
# yum install rsync


rsync syntax:


rsync {source}  {destination}


Options:
--delete : delete files that don't exist on sender (system)
-v          : Verbose
-a         : archive mode
-r         : recurse into directories
-z        : compress file data


Example:


In a single machine:


# rsync -avz /src/bar /data/tmp


This will transfer all files from the directory /src/bar to /data/tmp/bar directory.


# rsync -avz /src/bar/ /data/tmp


This will transfer all files from the directory /src/bar to /data/tmp/.
"/" (slash) on a source means "copy the contents of this directory".




From a local computer to a remote server:


rsync  -avz  --rsh='ssh -p{ssh-port.no}'   {source}  {remote machine IP}:{destination}


example:


rsync  -avz   --rsh='ssh  -p2222'  /src/bar/  192.168.1.1:/data/tmp/


If the remote server using default port(22):


rsync  -avz   -e ssh  /src/bar/  192.168.1.1:/data/tmp/


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