$0 app [offline|stop|initENV|setENV|loadpack|deploy|rollback|start|restart|status|check|online] [--verbose] ex: foo offline restart online
To install pantheon, copy and paste the appropriate command in to your terminal.
cpanm
cpanm pantheon
CPAN shell
perl -MCPAN -e shell install pantheon
For more information on module installation, please visit the detailed CPAN module installation guide.