simple directory watching for new files.

watch.sh

#!/bin/bash
watch() {
  touch .newer
  while :; do
    find . -type f -newer .newer \
    | grep -v .newer \
    | while read f; do
      process_watch ${f}
      touch .newer
    done | processall_watches
  sleep 1
  done
}
process_watch() { echo $1; }
processall_watches() { cat; }