What is the proper way to use inotify?

Question

I want to use the inotify mechanism on Linux. I want my application to know when a file aaa was changed. Can you please provide me with a sample ho

Answer 1

If all you need is a commandline application, there is one called inotifywait that watches files using inotify

from terminal 1

# touch cheese
# while inotifywait -e modify cheese; do 
>   echo someone touched my cheese
> done

from terminal 2

echo lol >> cheese

here is what is seen on terminal 1

Setting up watches.
Watches established.
cheese MODIFY 
someone touched my cheese
Setting up watches.
Watches established.

Update: use with caution and see the comments.