## mark a section (Learn more)

class libwww-perl { package { "libwww-perl": ensure => latest } } class apache2 { include libwww-perl } class tomcat { include libwww-perl } Vs: class apache2 { package { "libwww-perl": ensure => latest } } class tomcat { package { "libwww-perl": ensure => latest } } And, as a final case, lets say you move to a platform without a libwww-perl package, or you need to use CentOS and Debian at the same time: class libwww-perl { case $operatingsystem: { debian: { package { "libwww-perl": ensure => latest } } freebsd: { exec { "libwww-perl": command => "/usr/bin/perl -MCPAN -e 'install libwww', onlyif => ... } } } } Compared to having to refactor everyplace that package exists for the same.

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