beer planet

Computer Science majors out there that went through tedious hours of studying Lisp - this is for you from xkcd. If you know Perl, it will make even more sense.

Source: http://xkcd.com/224/

See Also: Best Programming Comic Ever: Code Quality In WTFs/Minute

Updated: March 19th, 2008

cpan is a perl module manager. To get into cpan, login as root and type in

cpan

Install a module:

cpan install MODULE

Upgrade a module:

cpan upgrade MODULE

Reinstall a module or force install in case of failed tests:

force install MODULE

See a list of upgradable modules:

r

See cpan configuration (that's the letter 'o'):

o conf

Update an option in cpan configuration:

o conf OPTION_NAME OPTION_VALUE

It is always nice to:

upgrade CPAN
install Bundle::CPAN

If there's an error making a Perl module, it can be caused by a missing make path in cpan configuration. In cpan, type in:

o conf

which will show all cpan options, then:

o conf make /usr/bin/make
o conf commit

A good option is:

o conf prerequisites_policy follow

By default, cpan will prompt to install every dependecy while installing a module. This option will automatically install dependencies without prompting.