[LINUX] Install rsync on CentOS8 (version check) and file backup (synchronization)

First, install rsync and check the version

Installed below. (It seems that dnf has become the standard for installation from CentOS 8)

command

dnf -y install rsync

After the installation is complete, check the version below.

command

rsync --version

First, check the operation of 1 file copy

Command to copy the "/from/test1.txt" file to the "/ to /" folder. However, ** only the operation check ** is done without actually copying.

command

rsync -vn /from/test1.txt /to/

• v = Show rsync behavior on your terminal Optional
• n = Do not actually do the processing, just rehearse option (dry run)

The result looks like this. (File is not copied) Before you get used to it, you should add `` `-vn```.

Let's take a look at the options

command

rsync -help

result… (The total is about twice as much as this image ...)

For now, just remember the option to mirror the folder

I want to make the contents of the "/ to" folder the same as "/ from"! That option.

command

rsync -acv --delete /from/ /to/

• a = Copy while maintaining file ownership, creation date, etc., and process subfolders recursively Option (Archive)
• c = Do not judge whether to copy by comparing the checksum, not the file size or modification date. Option
• Delete = Do not delete files and folders that are not in the copy source from the copy destination Option

When synchronizing folders, be careful not to forget to add "/" at the end of the copy source file path. If you do not add it, a "/ to/from" folder will be created and copied into it ...

Serpentine

I checked using Docker Desktop this time as well.

Reference site

https://www.server-world.info/query?os=CentOS_8&p=rsync https://www.atmarkit.co.jp/ait/articles/1702/02/news031.html

version

Windows10 Pro version 1909 OS build 19042.685 Docker Desktop:3.0.0（50684） Engine:20.10.10 Compose:1.27.4 CentOS Linux release 8.2.2004 (Core) rsync version 3.1.3 protocol version 31