[Foreigner]

jannaly,
sed.exe:

Код:

sed -n "/exempl.com/ s/.*\(http.*com\).*/\1/p" 1.txt 1>config.txt

powershell.exe:

Код:

(gc 1.txt | sls 'exempl.com') -replace '.*(http.*com).*','$1' | sc config.txt