Modules - behind the scene

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• The functionality of Cwd is implemented in a file called Cwd.pm
• @INC the list of libraries
• perl -V
• perldoc Cwd documentation
• perldoc -l Cwd location /usr/lib/perl5/5.8.6/i386-linux-thread-multi/Cwd.pm
• perldoc -m Cwd module content

Examples of modules that export functions. Look at their source code

- Cwd
- File::Basename
- File::Spec
- File::Spec::Functions