Yes, I didn't know that this line must be written in command line. Instead, I was writting any similar line to my program. Also, now I made it clear for myself the factors like "compile time" and a "run time"...
Thanks, now I configured my module directories, afterall, I'll write at top line of my programs (that uses modules) just this line: 'use Module_name;':
(at command line)
export PERL5LIB="/home/hamidjon/Perl/Learning/code_examples/myModules"
...and I check using 'perl -V':
Built under linux
Compiled at Mar 23 2012 17:00:13
%ENV:
PERL5LIB="/home/hamidjon/Perl/Learning/code_examples/myModules"
@INC:
/home/hamidjon/Perl/Learning/code_examples/myModules
/etc/perl
/usr/local/lib/perl/5.14.2
/usr/local/share/perl/5.14.2
/usr/lib/perl5
/usr/share/perl5
/usr/lib/perl/5.14
/usr/share/perl/5.14
/usr/local/lib/site_perl