Thit example has a lot of dependencies that Time::ETA does not need.
But if you have all that modules, you can see nice visualisation of how Time::ETA works.
To install Time::ETA, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Time::ETA
CPAN shell
perl -MCPAN -e shell install Time::ETA
For more information on module installation, please visit the detailed CPAN module installation guide.