2022/04/08

What hardlinks are: direct references to inodes. A hardlink can’t reference filesystem objects that don’t have inodes, such as directories or ports, and aren’t portable across different hardware devices even with the same filesystem layout (I think).

Also, the opposite of mount(8) is not unmount, it’s umount >:(

gzip -vt $path_to_file checks the validity of a gzip archive: see https://unix.stackexchange.com/questions/359303/check-validity-of-gz-file

2022/05/16

that gzip(1), by default, includes file mtimes. The flag to prevent gzip from zipping non-deterministically is gzip --no-name or gzip -n.