# CGI -> 3.63
perl -MCGI=link -le 'print link({-href=>"/",-rel=>"stylesheet"})'
<link href="/" rel="stylesheet" />

##</code><code>##

# CGI -> 4.28
perl -MCGI=Link -le 'print Link({-href=>"/",-rel=>"stylesheet"})'
<link href="/" rel="stylesheet" />