Script to check if internet is connected.

Question

I am new at scripting and have a problem.
I need a script to check if my headless server, after starting up in the morning, has an Internet connection or not, and once it has established that it is connected to the Internet it needs to send me a mail that it has a connection.
Now the mail sending part of the script I can do.
However the checking if it has an Internet connection or not is harder and here I get stuck.
I have the following script to check if I have a connection (found it on macinstruct.com).
set intnt to do shell script "ping -c 1 google.com; echo -n"
set paras to number of paragraphs in intnt
if paras < 5 then
Now I would like the script to recheck if it has or has no connection till it has one, and then execute sending the mail. This is where I get stuck.
Anybody have such script or can tell me how to do this?
Thanks.

Answer 1

I am not sure that your method of checking for internet connection is ideal (and I am sure you will get some hints from others). However, what you're looking for is the repeat while ... end repeat loop.
Note that in the example below, I have initialised your variables to an empty string and 1 respectively. You could also just repeat the lines inside the repeat loop.
set intnt to ""
set paras to 1
repeat while paras < 5
set intnt to do shell script "ping -c 1 google.com; echo -n"
set paras to number of paragraphs in intnt
end repeat