On Wed, Jul 13, 2016, 21:11 Chris Adams <li...@cmadams.net> wrote: > Once upon a time, Mike Wright <nob...@nospam.hostisimo.com> said: > > Putting all that together, I'd recommend: > > PATTERN='https?://[^/]*\.in/' > grep "$PATTERN" file.of.links > links.in > > or just: > > grep 'https?://[^/]*\.in/' file.of.links > links.in > > Only potential oddity would be if you have URLs with non-standard ports > specified (like "https://foo.in:8080/";); to match that, you could use > egrep instead (extended regex): > > egrep 'https://[^/]*\.in(:[0-9]+)?/' file.of.links > links.in
One extra change I'd make, to make it more obvious you are checking for a literal dot and not intending to escape, use [.] instead of \. So, egrep 'https://[^/]*[.]in(:[0-9]+)?/' file.of.links > links.in
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