[SLL] Scripting Question

[Eric]

I am biting the bullet and trying to learn more about shell and perl 
scripting.  I have two unrelated questions.

1.  Using perl regular expression, how could I match a string followed 
by a period and a digit? The string doesn't have to include the period 
and digit though. For example, I'd want to match something like this:

string
string.2

but not:

strings
string9
string.
strings.2

So far I've come up with
/^string\.?[0-9]?/

2.  I have a wireless card that I am trying to track since its 
removeable.  Sometimes it shows up as wlan0 or wlan1.  The only thing 
that differentiates it is the driver, since its different than the 
others.  How could I pull the driver info and relate it to wlan0 or wlan1?

Thanks for the help,

Eric

-- 
Eric Kahklen
Lynnwood, WA
206-595-2934