Monitor applications

[voodoo_]

I wanted to know if there is any way to monitor the application folder for application initiations and termination, such as, say I have App1, App2, and App3 in the /Applications folder I want a script/program (running in an infinite loop) that can output the following:

App1 has started
App3 has started
App1 has terminated
App2 has started
App2 has terminated
App3 has terminated
...
etc

So far I try using fsevents, kqueue, etc... without success.
Please help me

[Natobasso]

If you are a graphic designer there are apps out there that monitor your app usage as a way of tracking billing/resources...