Two common patterns: 

my ($substr) = $var =~ /(pattern)/;
print $substr, "\n"
   if defined $substr;

[download]
if ($var =~ /(pattern)/) {
   print "$1\n";
}

[download]

Don't forget to put the parens around what you want to capture.

Update: Two common patterns for multiple matches: 

my @substrs = $var =~ /(pattern)/g;
print "$_\n"
   foreach @substrs;

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while ($var =~ /(pattern)/g) {
   print "$1\n";
}

[download]

In reply to Re: How to print a substring using regex by ikegami
in thread How to print a substring using regex by mad2code

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