The @INC array is for storing directories in which Perl looks for your modules. If you have a file UvaModule.pm in the directory D:\uva\code\, then you can load it with:

use lib 'D:/uva/code/';
use UvaModule;
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Read the lib documentation.

thanx Corion,,,, i am not sure whether the following code is write ======================================

#file1 is in  "d:/test.pm"                                 
sub uvaraj                                                 
{
$name='ramu';
print 'uvaraj is a good boy in nature but...';
}
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===================================

#file2 is in "d:/run.pl"                                   
use lib 'D:/';
use test;
&uvaraj;
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==================== i run the second file, it is giving error as "test.pm didnt return a true value"

Put the following line near the top of your script:

use diagnostics;
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Perl will then tell you the cause of the error. The diagnostics pragma has many helpfull hints. Please also read the Writeup Formatting Tips and use the Preview feature so your posts are readable to others. Perlmonks uses HTML for formatting.