To install Locale::TextDomain::UTF8::IfEnv, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Locale::TextDomain::UTF8::IfEnv
CPAN shell
perl -MCPAN -e shell
install Locale::TextDomain::UTF8::IfEnv
For more information on module installation, please visit the detailed CPAN module installation guide.