CGI Hello World

Start with the CGI version of “Hello World”. Although simple, the program may be more of a challenge to get running than your usual Perl program.

The program itself is simple enough, as shown in Listing 12.1.

Listing 12.1. hello.pl
#!/home/sdo/local/bin/perl –T 
# Replace the above line with the path 
# to your Perl program 

use strict; 
use warnings; 

print <<EOF 
Content: text/html 

<HEAD><TITLE>Hello</TITLE></HEAD> 
<BODY> 
<P> 
Hello World! 
</BODY> 

EOF

The first thing to notice is that the program begins with the line

#!/home/sdo/local/bin/perl –T

This is a special “magic line” used on UNIX/Linux systems to turn the script into a program. (See Appendix B, “Turning Perl Scripts into Commands,” for details.) You’ll have to replace ...

Get Perl for C Programmers now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.

Start your free trial