#!/usr/local/bin/perl
print "Content-type: text/html\n\n";
print "<H1>Hello World</H1>\n";

##</code><code>##

[root@www cgi-bin]# ./test.pl
: bad interpreter: No such file or directory

##</code><code>##

[root@www cgi-bin]# perl test.pl
Content-type: text/html

<H1>Hello World</H1>

##</code><code>##

#!/usr/local/bin/perl -w
print "Content-type: text/html\n\n";
print "<H1>Hello World</H1>\n";