How to filter files with specific permissions or attributes while running ls?

Question

For example, if I only want the files that have the permission g+s while running ls, how could I do this?

Answer 1

ls doesn't provide this – it's typically used for just tweaking display options. What you can do instead involves using find. For example:

find . -perm -g+s

To mimic ls's behavior of only listing files in the current directors, use the -maxdepth 1 option.

The possible combinations are endless. Refer to the find help linked above for more examples and the syntax differences in using - or / before the mode, also with respect to / being a GNU-only extension and + being used in BSD-style find.