On Thu, Apr 11, 2024 at 08:42:20PM +0200, Hans wrote: > in my case it is the config freom from bootcdwrite, which is bootcdwrite.conf.
<https://manpages.debian.org/bookworm/bootcd/bootcdwrite.conf.5.en.html> says: This file will be sourced as shell file. So, you may use any valid "shell" (presumably sh) syntax, including backslash-newline for continuation.