To install , copy and paste the appropriate command in to your terminal.
cpanm
cpanm ELACOUR/RT-Extension-AttachmentFilter-0.01.tar.gz
CPAN shell
perl -MCPAN -e shell
install ELACOUR/RT-Extension-AttachmentFilter-0.01.tar.gz
For more information on module installation, please visit the detailed CPAN module installation guide.