#!/bin/bash
#
# Monitor the input directory and if any change occurs run the provided command:
#
# Usage:
#   after-change.sh /tmp ls -al %f

if [ $# -lt 3 ]; then
  echo "Usage: $0 dir cmd "
  exit 1
fi

which inotifywait 2>&1 >/dev/null

if [ "$?" == "1" ]; then
  echo "ERROR:  inotifywait not installed."
  exit 1
fi

dir=$1
shift
cmd=$1
shift
options=$*

inotifywait -q -r -m $dir $options
eval $cmd