Quick and dirty markdown live previewer in bash using surf and xdotool

previewer.sh

#!/bin/bash

render() {
  marked source.md > output.html
}

cleanup() {
  if [ -d /proc/$surf_pid/ ]; then
    kill $surf_pid
  fi
  if [ -f .surf_xid ]; then
    rm .surf_xid
  fi
}

render
surf -x $(pwd)/output.html > .surf_xid &
surf_pid=$!

trap cleanup EXIT

inotifywait -qm source.md -e CLOSE_WRITE | while read; do
  render
  xdotool key --window `cat .surf_xid` ctrl+r
done