To install Log::Log4perl::Layout::SimpleLayout::Multiline, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Log::Log4perl::Layout::SimpleLayout::Multiline
CPAN shell
perl -MCPAN -e shell install Log::Log4perl::Layout::SimpleLayout::Multiline
For more information on module installation, please visit the detailed CPAN module installation guide.