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You might not even like rsync. Yeah it's old. Yeah it's slow. But if you're working with Linux you're going to need to know it.

In this video I walk through my favorite everyday flags for rsync.

Support the channel:
https://patreon.com/VeronicaExplains
https://ko-fi.com/VeronicaExplains
https://thestopbits.bandcamp.com/

Here's a companion blog post, where I cover a bit more detail: https://vkc.sh/everyday-rsync

Also, @BreadOnPenguins made an awesome rsync video and you should check it out: https://www.youtube.com/watch?v=eifQI5uD6VQ

Lastly, I left out all of the ssh setup stuff because I made a video about that and the blog post goes into a smidge more detail. If you want to see a video covering the basics of using SSH, I made one a few years ago and it's still pretty good: https://www.youtube.com/watch?v=3FKsdbjzBcc

Chapters:
1:18 Invoking rsync
4:05 The --delete flag for rsync
5:30 Compression flag: -z
6:02 Using tmux and rsync together
6:30 but Veronica... why not use (insert shiny object here)

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[–] state_electrician@discuss.tchncs.de 33 points 4 days ago (5 children)

Why videos? I feel like an old man yelling at clouds every time something that sounds interesting is presented in a fucking video. Videos are so damn awful. They take time, I need audio and I can't copy&paste. Why have they become the default for things that should've been a blog post?

[–] czardestructo@lemmy.world 12 points 3 days ago

Thank you for putting into words what ive subconsciously been thinking for years. Every search result prioritizes videos at the top and I'm still annoyed every time. Or even worst I have to hunt through a 10 minute video for the 30 seconds of info I needed. Stoohhhhpppp internet of new! Make it good again!

[–] Wawe@lemmy.world 13 points 3 days ago* (last edited 3 days ago)

They linked blog post with the video: https://vkc.sh/everyday-rsync/

[–] vga@sopuli.xyz 10 points 3 days ago (1 children)

Blogs can have ads.

[–] kchr@lemmy.sdf.org 5 points 3 days ago

Hear hear. Knowledge should be communicated in an easily shareable way that can also be archived as easily, in contrast to a video requiring hundreds of MB:s.

[–] northernlights@lemmy.today 3 points 4 days ago (1 children)

Especially for a command line tool

[–] Matthew@midwest.social 1 points 2 days ago
[–] NuXCOM_90Percent@lemmy.zip 72 points 5 days ago (4 children)

I would generally argue that rsync is not a backup solution. But it is one of the best transfer/archiving solutions.

Yes, it is INCREDIBLY powerful and is often 90% of what people actually want/need. But to be an actual backup solution you still need infrastructure around that. Bare minimum is a crontab. But if you are actually backing something up (not just copying it to a local directory) then you need some logging/retry logic on top of that.

At which point you are building your own borg, as it were. Which, to be clear, is a great thing to do. But... backups are incredibly important and it is very much important to understand what a backup actually needs to be.

[–] tal@olio.cafe 24 points 5 days ago* (last edited 5 days ago) (8 children)

I would generally argue that rsync is not a backup solution.

Yeah, if you want to use rsync specifically for backups, you're probably better-off using something like rdiff-backup, which makes use of rsync to generate backups and store them efficiently, and drive it from something like backupninja, which will run the task periodically and notify you if it fails.

rsync: one-way synchronization

unison: bidirectional synchronization

git: synchronization of text files with good interactive merging.

rdiff-backup: rsync-based backups. I used to use this and moved to restic, as the backupninja target for rdiff-backup has kind of fallen into disrepair.

That doesn't mean "don't use rsync". I mean, rsync's a fine tool. It's just...not really a backup program on its own.

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[–] atk007@lemmy.world 21 points 4 days ago (2 children)

Rsnapshot. It uses rsync, but provides snapshot management and multiple backup versioning.

[–] Tja@programming.dev 14 points 4 days ago (3 children)

Yes, but a few hours writing my own scripts will save me from several minutes of reading its documentation...

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[–] 1984@lemmy.today 7 points 4 days ago* (last edited 4 days ago) (1 children)

I never thought of it as slow. More like very reliable. I dont need my data to move fast, I need it to be copied with 100% reliability.

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[–] mesamunefire@piefed.social 51 points 5 days ago (9 children)

Ive personally used rsync for backups for about....15 years or so? Its worked out great. An awesome video going over all the basics and what you can do with it.

[–] Eldritch@piefed.world 22 points 5 days ago (1 children)

And I generally enjoy Veronica's presentation. Knowledgable and simple.

[–] mesamunefire@piefed.social 20 points 5 days ago (2 children)

Her https://tinkerbetter.tube/w/ffhBwuXDg7ZuPPFcqR93Bd made me learn a new way of looking at data. There was some tricks I havent done before. She has such good videos.

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[–] clif@lemmy.world 15 points 4 days ago

I'll never not upvote Veronica Explains. Excellent creator and excellent info on everything I've seen.

[–] MangoPenguin@lemmy.blahaj.zone 4 points 3 days ago (6 children)

Surely restic or borg would be better for backups?

Rsync can send files and not delete stuff, but there's no versioning or retention settings.

[–] chronicledmonocle@lemmy.world 2 points 3 days ago (1 children)

If you add --delete-before, it absolutely can delete stuff.

Yeah but then it's not really a good backup!

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[–] quick_snail@feddit.nl 20 points 5 days ago (2 children)
[–] okamiueru@lemmy.world 10 points 4 days ago (1 children)

That part threw me off. Last time i used it, I did incremental backups of a 500 gig disk once a week or so, and it took 20 seconds max.

[–] Biscuit@ani.social 4 points 4 days ago

Yes but imagine.. 18 seconds.

[–] HereIAm@lemmy.world 8 points 4 days ago (1 children)

Compared to something multi threaded, yes. But there are obviously a number of bottlenecks that might diminish the gains of a multi threaded program.

[–] Tja@programming.dev 7 points 4 days ago

With xargs everything is multithreaded.

[–] vga@sopuli.xyz 4 points 3 days ago* (last edited 3 days ago) (2 children)

It's not bad if you don't need historical backups. I kinda think I do, so I use https://github.com/rustic-rs/rustic becase rust

Restic (https://github.com/restic/restic) is probably a better choice if you're not a rust-freak like me.

[–] harambe69@lemmy.dbzer0.com 4 points 3 days ago

Rustic scares me. I will 100% forget what tool I used to backup after 5 years and be unable to recover my files.

[–] WolfLink@sh.itjust.works 3 points 3 days ago (1 children)

I use rsync + ZFS for backups which includes historical backups

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[–] sugar_in_your_tea@sh.itjust.works 21 points 5 days ago (3 children)

Yeah it’s slow

What's slow about async? If you have a reasonably fast CPU and are merely syncing differences, it's pretty quick.

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[–] probable_possum@leminal.space 13 points 5 days ago* (last edited 5 days ago) (3 children)

rsnapshot is a script for the purpose of repeatedly creating deduplicated copies (hardlinks) for one or more directories. You can chose how many hourly, daily, weekly,... copies you'd like to keep and it removes outdated copies automatically. It wraps rsync and ssh (public key auth) which need to be configured before.

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[–] TheWilliamist@lemmy.world 5 points 4 days ago* (last edited 4 days ago) (1 children)

I still prefer tar for quick and dirty same box copies.

tar cf - * | (cd /target; tar xfp -)
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[–] RestrictedAccount@lemmy.world 6 points 4 days ago (4 children)

I use syncthing.

Is rsync better?

Syncthing works pretty well for me and my stable of Ubuntu, pi, Mac, and Windows

[–] MangoPenguin@lemmy.blahaj.zone 10 points 4 days ago (3 children)

Different tools for different use cases IMO.

But neither do backups.

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[–] EncryptKeeper@lemmy.world 8 points 4 days ago

I’m not super familiar with Syncthing, but judging by the name I’d say Syncthing is not at all meant for backups.

[–] conartistpanda@lemmy.world 6 points 4 days ago

Syncthing is technically to synchronize data across different devices in real time (which I do with my phone), but I also use it to transfer data weekly via wi-fi to my old 2013 laptop with a 500GB HDD and Linux Mint (I only boot it to transfer data, and even then I pause the transfers to this device when its done transferring stuff) so I can have larger data backups that wouldn't fit in my phone, since LocalSend is unreliable for large amounts of data while Synchting can resume the transfer if anything goes wrong. On top of that Syncthing also works in Windows and Android out of the box.

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[–] Appoxo@lemmy.dbzer0.com 5 points 4 days ago

Veeam for image/block based backups of Windows, Linux and VMs.
syncthing for syncing smaller files across devices.

Thank you very much.

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