Shell script to run native mac apps from command line

edit.sh

#!/bin/zsh

set -e

if [[ $# -ne 1 ]]; then
	echo 'Sorry, need only one parameter'; exit 1;
fi

FILENAME="$1"

if [[ ! -e "${FILENAME}" ]]; then
	echo 'Sorry, looking for an existing file or directory'; exit 1;
fi

full_app=$(
	osascript 2>/dev/null <<EOF
set afile to "${FILENAME:a}"
tell application "System Events"
	get default application of disk item afile
end tell
EOF
)

the_app=$(echo "$full_app" | sed 's/.*:\([^:]*\):$/\1/')

open -a "${the_app}" "${FILENAME:a}";