support fish-shell scripts

Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu>
Revert "support fish-shell scripts"

This reverts commit ac696400d3f58dae5c4034d2c6c48de469d4a69e.
support fish-shell scripts

Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu>