Use scripts to kill and restart apps?

[Sigi]

Hi,

I have a similar issue. The only difference is that I have never written a script in my life. I do have 3 startup items running:

Skype
BOINCManager and
Drobo Dashboard

1. Will these 3 apps mess up a bootable backup?
2. How would the script look like that I need?
3. In what app do you write the script?

Thanks for your help

Sigi