#!/bin/sh
# my For loop
# I can't find good one character name :(

while getopts t: opt; do
	case $opt in
		t) time="$OPTARG";;
		\?) exit 1;;
	esac
done
shift $((OPTIND-1))

while :; do
	# suggested by https://github.com/koalaman/shellcheck/wiki/SC2294
	"$@"
	sleep "${time:-1}"
done

# tests?
#f ls -lah -- -l
#f printf 'echo 1; echo 2' 
#f printf 'haha %d lala' 10

# tips
#f eval 'echo 1; echo 2'