Really? You have one file with the name 1154815511637163816391640? Do you actually read what you post? And you are mistaken, using colors and different fonts does not make your posts more readable, just the opposite - it distracts from the content.
No idea why they are there but I could not delete them in the crude manner I expected:-
**IBMW530:/.snapshots #** rm -r 1548
This command gave me very many read only files scrolling past my screen.
Snapshots are read-only by definition, you cannot delete anything inside snapshot, why are you surprised?
I am not familiar with snapper so was not aware that snapshots were read only.
The garbled cut and paste is not my doing and I had not seen the string of numbers until I saw the post.
The colour scheme is new to me too and not set by me. Must be a default somewhere in a recent upgrade.
Will post the info when I am back at the relevant machine.
Thank you for your reply.
I apologise for the colour scheme which I did not chose but it seems reasonable to me. I believe blue is for directories and red is because I am running as su for this exercise. No idea why the first version was munged.
Here is the result of the suggested command:-
**IBMW530:/.snapshots #** btrfs subvolume list /
ID 256 gen 45401 top level 5 path @
ID 257 gen 488510 top level 256 path @/var
ID 258 gen 388900 top level 256 path @/usr/local
ID 259 gen 488500 top level 256 path @/tmp
ID 260 gen 388900 top level 256 path @/srv
ID 261 gen 488500 top level 256 path @/root
ID 262 gen 488492 top level 256 path @/opt
ID 263 gen 488407 top level 256 path @/boot/grub2/x86_64-efi
ID 264 gen 143028 top level 256 path @/boot/grub2/i386-pc
ID 265 gen 488461 top level 256 path @/.snapshots
ID 266 gen 488503 top level 265 path @/.snapshots/1/snapshot
ID 1968 gen 356750 top level 265 path @/.snapshots/1548/snapshot
ID 1975 gen 360898 top level 265 path @/.snapshots/1551/snapshot
ID 2071 gen 388905 top level 265 path @/.snapshots/1637/snapshot
ID 2072 gen 388955 top level 265 path @/.snapshots/1638/snapshot
ID 2073 gen 488239 top level 265 path @/.snapshots/1639/snapshot
ID 2074 gen 488406 top level 265 path @/.snapshots/1640/snapshot
This looks OK to me but the two out of sequence snapshots are what I wish to remove.