Re^2: Exact Regex for port Number

Hi,Thank you ALL for your replies. in this case, I am a BIT lucky since I only have higher POTRS from 1024 to 65535 . So I can go with {4,5}

So, I go with below code. Thanks once again. Hv a wonderful day.

:[0-9]{4,5}
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Re^3: Exact Regex for port Number by AnomalousMonk (Archbishop) on Jun 19, 2018 at 10:12 UTC
But `:[0-9]{4,5}` allows port numbers like 1000 and 99999; more range checking is in order. Maybe something like: c:\@Work\Perl\monks>perl -wMstrict -le "for my $pn (qw( :1 :23 :456 :999 :1000 :1023 :1024 :9999 :10000 :65535 :1024x :9999x :10000x :65535x :65536 :99999 :123456 :x :foo : ), '', ' ', @ARGV) { my $pn_ok = $pn =~ m{ : (\d{4,5}) (?! \d) }xms && $1 >= 1024 && $1 <= 65535; print qq{'$pn' }, $pn_ok ? 'in range' : 'BAD'; } " ':1' BAD ':23' BAD ':456' BAD ':999' BAD ':1000' BAD ':1023' BAD ':1024' in range ':9999' in range ':10000' in range ':65535' in range ':1024x' in range ':9999x' in range ':10000x' in range ':65535x' in range ':65536' BAD ':99999' BAD ':123456' BAD ':x' BAD ':foo' BAD ':' BAD '' BAD ' ' BAD [download] Give a man a fish: `<%-{-{-{-<`	[reply] [d/l] [select]

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Re^3: Exact Regex for port Number
by AnomalousMonk (Archbishop) on Jun 19, 2018 at 10:12 UTC

But :[0-9]{4,5} allows port numbers like 1000 and 99999; more range checking is in order. Maybe something like:

c:\@Work\Perl\monks>perl -wMstrict -le
"for my $pn (qw(
   :1 :23 :456 :999 :1000 :1023
   :1024 :9999 :10000 :65535  :1024x :9999x :10000x :65535x
   :65536 :99999 :123456
   :x :foo :
   ), '', ' ', @ARGV) {
   my $pn_ok =
     $pn =~ m{ : (\d{4,5}) (?! \d) }xms && $1 >= 1024 && $1 <= 65535;
   print qq{'$pn' }, $pn_ok ? 'in range' : 'BAD';
   }
"
':1' BAD
':23' BAD
':456' BAD
':999' BAD
':1000' BAD
':1023' BAD
':1024' in range
':9999' in range
':10000' in range
':65535' in range
':1024x' in range
':9999x' in range
':10000x' in range
':65535x' in range
':65536' BAD
':99999' BAD
':123456' BAD
':x' BAD
':foo' BAD
':' BAD
'' BAD
' ' BAD
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