Executing a bash script upon file creation

Question

I am looking write a small bash script to, when launched, watch a directory for any newly created files. If a new file appears, I want its presence to trigger a second scrip

Answer 1

Use iwatch. No, really. It'll handle all of the details of making a daemon, running on startup, monitor and log, so on and so on. All you need to do is set the options, and have your bash script handle the details of actually doing something with the file.