How to crawl all links from website using regex? How to write correct regex for all links?

[MindaugasVaitkus2]

My trials: 1. --regex=((?<=src=[\"'])|(?<=href=.))(?!(http(s|)(:|%3[Aa])))[0-9A-Za-z%?&#_=+.~]([0-9A-Za-z%?&#_=+./~])*(?=['\"] The system cannot find the file specified.

((?<=src=[\"'])|(?<=href=.))(?!(http(s|)(:|%3[Aa])))([0-9A-Za-z%?&#_=+./~])*(?=['\"])

The system cannot find the file specified.

[MindaugasVaitkus2]

I used regex below with works perfect: (http:\/\/|https:\/\/)?[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)? https://www.regextester.com/97812 from link

[meysam1366]

how use in regex with command line?