Feature NetBSD FreeBSD OpenBSD Functionality C yes yes yes Replace using regex E yes yes yes Replace each word with suffix H yes yes yes Replace each word with non-final components L yes no no Replace with the name of the variable L no (use tl) yes yes Lowercase M yes yes yes Select matching using glob N yes yes yes Select non-matching using glob O yes yes no Order alphabetically Q yes yes yes Quote shell meta-characters R yes yes yes Replace each word with non-suffix S yes yes yes Substitute T yes yes yes Replace each word with last component U no (use tu) yes yes Uppercase