What is rsync?

rsync is a utility for efficiently transferring and synchronizing files between a computer and a storage drive and across networked computers by comparing the modification times and sizes of files. It is commonly found on Unix-like operating systems and is under the GPL-3.0-or-later license.

What is rsync Synology?

rsync is a command-line program for syncing files. It is used to sync files from your computer to a remote computer, from a remote computer to your computer, from a folder to another folder on the same computer, from your computer to your external hard drive, from a remote computer to your external hard drive, etc.

How do I use rsync in Synology NAS?

To enable rsync accounts:

Go to Control Panel > File Services > rsync, and select Enable rsync account.
Click Edit rsync Account to set users and corresponding passwords for authentication.
Click Apply.

Is rsync safe?

1 Answer. Using rsync is fairly safe on read-write mounted file systems. When rsync is started it builds up a file list and then starts to copy those files. This file list is not being updated during the run.

What port rsync uses?

port 873/
Rsync is primarily a utility for synchronizing files between systems in an efficient manner and is frequently used for archival and backup purposes as well as data distribution and sharing tasks. Rsync also has the ability to operate in a daemon mode where it listens on port 873/TCP.

How do I use rsync daemon?

There are two different approaches to have rsync running as a daemon, one is to launch the program with the –daemon parameter, and the other is to have inetd or xinetd to launch rsync and have it running as the other services that inetd and xinetd handles. But first, we must configure the file /etc/rsyncd.

How do I rsync between two NAS?

(1) Enable RSYNC – On the NAS: Go to Control Panel -> File Services ->Click the RSYNC tab, then enable RSYNC service. You can leave the default port. RSYNC needs to be enabled on both Synology NAS.

What do the letters in rsync messages mean?

(this can happen when talking to an older rsync). The attribute that is associated with each letter is as follows: A c means either that a regular file has a different checksum (requires –checksum) or that a symlink, device, or special file has a changed value.

What is rsync in Linux?

Last Updated : 30 Sep, 2019 rsync or remote synchronization is a software utility for Unix-Like systems that efficiently sync files and directories between two hosts or machines. One of them being the source or the local-host from which the files will be synced, the other one being the remote-host, on which synchronization will take place.

What does the change flag mean when sending files to rsync?

Note that if you are sending files to an rsync prior to 3.0.1, this change flag will be present only for checksum-differing regular files. A s means the size of a regular file is different and will be updated by the file transfer.

Why does rsync show the number of files in a file?

This tells rsync to print a verbose set of statistics on the file transfer, allowing you to tell how effective the rsync algorithm is for your data. Number of files is the count of all “files” (in the generic sense), which includes directories, symlinks, etc.