PerlIO::mmap - Memory mapped IO
open my $fh, '<:mmap', $filename;
This layer does read and write operations by mmap()ing the file if possible, but falls back to the default behavior if not.
PerlIO::mmap only exists to use XSLoader to load C code that provides support for using memory mapped IO. One does not need to explicitly use PerlIO::mmap;.
To install less, copy and paste the appropriate command in to your terminal.
perl -MCPAN -e shell
For more information on module installation, please visit the detailed CPAN module installation guide.