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this post was submitted on 21 Dec 2023
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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It's going to take a little work here, but I have a large drive on my plex, and a couple of smaller drives that I back everything up to. On the large drive get a list of the main folders. You can do a "du -h --max-depth=1 | sort -hk1" on the root folder to get an idea of how you should split them up. Once you have an idea, make two files, each with their own list of folders (eg: folders1.out and folders2.out) that you want to go to each separate drive. If you have both of the smaller drives mounted, just execute the rsync commands, otherwise, just do each rsync command with the corresponding drive mounted. Here's an example of my rsync commands. Keep in mind I am going from an ext4 filesystem to a couple of ntfs drives, which is why I use the size only. Make sure and do a dry run or two, and you may or may not want the '--delete' command in there. Since I don't want to keep files I have deleted from my plex, I have it delete them on the target drive also.
sudo rsync -rhi --delete --size-only --progress --stats --files-from=/home/plex/src/folders1.out /media/plex/maindrive /media/plex/4tbbackup
sudo rsync -rhi --delete --size-only --progress --stats --files-from=/home/plex/src/folders2.out /media/plex/maindrive /media/plex/other4tbdrive