On 11/05/2024 10:14, Dan Jacobson wrote:
join should have an option to return an error value in the shell's $?
if any lines are not matched.
Currently the man page doesn't even mention a return value. So it is not
set in stone yet.
Currently one must save -v output in a file then use test -s do detect
if there were any non-matched lines. And then exit one script with
non-zero. Big hassle.
join (GNU coreutils) 9.4
This does seem to have some merit.
Perhaps --check-pairable similar to the existing --check-order option.
cheers,
Pádraig
