in reply to Regular expressions

could yo be more especific please?
You can do this: 
$_=<DATA>;
chomp;
($htmlini, $something, $more, $htmlend)=
m|(<html>)(/.*?/)([^<]*).*(</html>)|i;
print join "\n", ($htmlini, $something, $more, $htmlend);
__DATA__
<html>/something/more words<br/></html>

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but I'm afraid that we need some more information about the text yo need to match.
Ah!, you can also read perl documentation about regular expresions:
perldoc perlre
perldoc perlrequick

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Hopes 
perl -le '$_=$,=q,\,@4O,,s,^$,$\,,s,s,^,b9,s,$_^=q,$\^-]!,,print'

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