sed substring extraction 1

[adumitrescu]

Hello,

I've got a string that looks like this:
[blah]A1-18[blah]n.n.n.n[blah]
where [blah] is one or more chars and n is one or more digits. This string lives in a file called 'status' (on Linux 2.4). I need to return only the IP from this string. Here's what I've got so far:
sed -n 's/.*A1-18.*\(\d*\.\d*\.\d*\.\d*\).*/\1/p' status

The command runs without error, but returns nothing. Suggestions? -thanks

 

[PHV]

A starting point (not waterproof):
sed -n 's/.*A1-18[^0-9]*\([0-9]*\.[0-9]*\.[0-9]*\.[0-9]*\).*/\1/p'

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886

 

[adumitrescu]

Thanks, PH. Indeed, it was my use of \d that jammed things up (too much Perl'ing).
-cheers