Exclude one pattern from glob match

shopt -s extglob
echo rm foo.!(org)

This is "foo." followed by anything NOT "org"

ref: https://www.gnu.org/software/bash/manual/bashref.html#Pattern-Matching

In bash, you can also use GLOBIGNORE="*.org"; rm -i foo*.

And unset GLOBIGNORE when done.

It's not really better than shopt -s extglob, but I find it easier to remember.

A pipe can do?

ls * | grep -v "foo.org" | xargs -I {} echo {}

(obviously you might want to replace echo with rm in the last chain).