#!/bin/sh
# Start the given program and save its pid in the given pidfile.
# If a program is already running with that pidfile, kill it first.
. /etc/utils.sh

pidfile=$1
shift

if [ -z "$pidfile" -o -z "$1" ]; then
  echo "Usage: $0 <pidfile> <command...>" >&2
  exit 99
fi

killpid "$pidfile"
atomic "$pidfile" $$
exec "$@"