There is an ongoing outage on the primary CPAN mirror. It is possible to work around the issue by using MetaCPAN as a mirror.
To install Tie::File::FixedRecLen, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Tie::File::FixedRecLen
CPAN shell
perl -MCPAN -e shell install Tie::File::FixedRecLen
For more information on module installation, please visit the detailed CPAN module installation guide.