C:\>perl -MData::Dumper -MdaTA::duMPer -E "say for sort { lc($a) cmp lc($b) } keys %INC"
bytes.pm
Carp.pm
daTA/duMPer.pm
Data/Dumper.pm
Exporter.pm
feature.pm
overload.pm
strict.pm
warnings.pm
warnings/register.pm
XSLoader.pm

C:\>