From: Greg Wooledge <[email protected]> Date: Sun, 25 Jan 2026 15:26:19 -0500 > What?
My knowledge of ISO 9660 is cursory but note the first sentence in https://en.wikipedia.org/wiki/Optical_disk_image , "... disk image ... written to an optical disk, disk sector by disc sector ...". Not directly comparable to ext4. > > 2026-01-19-03-28-45-00. Shorter than a UUID for a file system. > > This looks like a timestamp. Explained by Thomas Schmitt in <[email protected]> >> lsblk --nodeps -o name,serial | grep -F -- "$destination" | cut -d ' ' -f1 > So... you *have* the serial number (somehow) ... As you did. # lsblk --nodeps -o name,serial > The obvious way would be to use awk: ... OK, thanks. cut, awk and others. cut seemed straightforward. > awk -v isn't 100% safe with all inputs, but if your serial number is > reasonable (alphanumeric, maybe with some basic punctuation, but no > backslashes or control characters) it should be OK. The cut I used relied only on blank separation. Thanks, ... P. -- mobile: +1 778 951 5147 VoIP: +1 778 508 0020 Bcc: peter at e a s t h o p e dot c a projects: en.wikibooks.org/wiki/User:PeterEasthope

