#!/bin/sh

# restart command with a short delay after it exits. command is best specified with -- after this programs options. restart-on-end [options] -- command ...
# arguments: [-n max_restart_times|-d delay_seconds] command ...
# example: restart-on-end -n 3 -- echo
# other possible names for this command: call-n-times, repeat

max_restart_times="-1"
delay=1

while test $# -gt 0
do
  case "$1" in
    -n)
      shift
      max_restart_times=$1
      ;;
    -d)
      shift
      delay="$1"
      ;;
    --)
      shift
      break
      ;;
    -*)
      echo "Unknown option: $1" >&2
      exit 1
      ;;
    *)
      break
      ;;
  esac
  shift
done

while test "$max_restart_times" -ne 0
do
  "$@"
  if test "$max_restart_times" -gt 0
  then
    max_restart_times=$(($max_restart_times - 1))
  fi
  sleep $delay
done