bash: extracting last two dirs for a pathname

Question

I seem to have failed at something pretty simple, in bash. I have a string variable that holds the full path to a directory. I\'d like to assign the last two di

Answer 1

I think there's a shorter way using globs, but:

$ DIRNAME='a/b/c/d/e'
$ LAST_TWO=$(expr "$DIRNAME" : '.*/\([^/]*/[^/]*\)$')
$ echo $LAST_TWO
d/e