I'm in the process of starting a proper backup solution however over the years I've had a few copy-paste home directory from different systems as a quick and dirty solution. Now I have to pay my technical debt and remove the duplicates. I'm looking for a deduplication tool.

• accept a destination directory
• source locations should be deleted after the operation
• if files content is the same then delete the redundant copy
• if files content is different, move and change the name to avoid name collision I tried doing it in nautilus but it does not look at the files content, only the file name. Eg if two photos have the same content but different name then it will also create a redundant copy.

Edit: Some comments suggested using btrfs' feature duperemove. This will replace the same file content with points to the same location. This is not what I intend, I intend to remove the redundant files completely.

Edit 2: Another quite cool solution is to use hardlinks. It will replace all occurances of the same data with a hardlink. Then the redundant directories can be traversed and whatever is a link can be deleted. The remaining files will be unique. I'm not going for this myself as I don't trust my self to write a bug free implementation.

I've run passwd and sudo su; passwd to change password for root and my account. Password is set correctly when using sudo and su but whenever I get prompted by pkexec it accepts only the old password. I've rebooted my system to make sure it was not an issue.

Edit: Solved Turns out the password were changed for root account but not my user account. I think the reason is that there are no password quality requirements on root accounts, but there are on the default account in ubuntu. Changing the password from root account passwd user worked fine.

In my dmesg logs I get following errors a lot:

[232671.710741] BTRFS warning (device nvme0n1p2): csum failed root 257 ino 2496314 off 946159616 csum 0xb7eb9798 expected csum 0x3803f9f6 mirror 1
[232671.710746] BTRFS error (device nvme0n1p2): bdev /dev/nvme0n1p2 errs: wr 0, rd 0, flush 0, corrupt 19297, gen 0
[232673.984324] BTRFS warning (device nvme0n1p2): csum failed root 257 ino 2496314 off 946159616 csum 0xb7eb9798 expected csum 0x3803f9f6 mirror 1
[232673.984329] BTRFS error (device nvme0n1p2): bdev /dev/nvme0n1p2 errs: wr 0, rd 0, flush 0, corrupt 19298, gen 0
[232673.988851] BTRFS warning (device nvme0n1p2): csum failed root 257 ino 2496314 off 946159616 csum 0xb7eb9798 expected csum 0x3803f9f6 mirror 1

I've run btrfs scrub start -Bd /home as described here. The report afterwards claim everything is fine.

btrfs scrub status /home
UUID:             145c0d63-05f8-43a2-934b-7583cb5f6100
Scrub started:    Fri Aug  4 11:35:19 2023
Status:           finished
Duration:         0:07:49
Total to scrub:   480.21GiB
Rate:             1.02GiB/s
Error summary:    no errors found

I've been messing with my flash drives trying to follow some random documentation with dd and now both of my flash drives are reporting 0 bytes of free space. I was trying to clear out everything and start from scratch as if they were new. I wonder if there are any program out there that can just sudo reset-everything /dev/sdX

I'm experiencing an issue with commands that provide a tui interface like journalctl, systemctl and vim. It feels like terminal dimensions are not matching up somehow. And this issue is present only some times. On host I'm using Black Box and I tile my windows using pop os tiler. I'm also frequently scaling the font with ctrl + and ctrl - shortcuts. Remote sshd host is running Debian variables $LINES and $COLUMNS are set. bashrc files are in their default state.

How is this supposed to work? Isn't my terminal client sending new $LINES and $COLUMNS each time there is a change?