China DOS Union

Under Windows, how can text-processing tools output matching strings? For example, if I want to output all .com domain names from a webpage's source code.
How should this be written with sed, grep, awk (are there any other programs?), etc.? Many thanks.
If I want to match .cn, .net, and other domain names, how should I use “OR” logic?

[ Last edited by nanhezzb on 2010-7-10 at 20:22 ]

grep.exe -o "*\.com" should probably meet the requirement like this, but I don't know whether writing it this way is accurate. How should the other command-line ones be written?



I found a problem, for example: grep.exe -o "aa*\.com can only match aakkjkk.com and cannot match aaaaaaaakkjkk.com. Why does grep regex match from the back?

[ Last edited by nanhezzb on 2010-7-10 at 18:56 ]