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Posted by PerlFAQ Server on April 9, 2008, 9:03 pm
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This is an excerpt from the latest version perlfaq8.pod, which
comes with the standard Perl distribution. These postings aim to
reduce the number of repeated questions as well as allow the community
to review and update the answers. The latest version of the complete
perlfaq is at http://faq.perl.org .
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8.49: How do I add a directory to my include path (@INC) at runtime?
Here are the suggested ways of modifying your include path, including
environment variables, run-time switches, and in-code statements:
the PERLLIB environment variable
$ export PERLLIB=/path/to/my/dir
$ perl program.pl
the PERL5LIB environment variable
$ export PERL5LIB=/path/to/my/dir
$ perl program.pl
the perl -Idir command line flag
$ perl -I/path/to/my/dir program.pl
the use lib pragma:
use lib "$ENV/myown_perllib";
The last is particularly useful because it knows about machine dependent
architectures. The lib.pm pragmatic module was first included with the
5.002 release of Perl.
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