CGI: Execute a perl script inside another perl script

[Gunnar Hjalmarsson]

Maybe it doesn't acknowledge relative paths in @INC.

Or more likely, since '.' represents the current working directory, the
working directory is some other directory but the one where the scripts
are located.

Then, to prevent that the users need to edit the main script, you can
try to manipulate @INC like this instead:

use lib $0 =~ /(.+)[\\\/]/;

(Or you can use the FindBin module, even if it isn't mod_perl or
taint safe.)

Optionally you can try:

chdir '.';
do 'y.pl' or die $!;