perl -MExtUtils::Installed -le '@_=ExtUtils::Installed->new->modules;print for sort{lc$a cmp lc$b}@_' >mod.ext;perl -e '@_=grep/Module/,`perldoc -uT perllocal`;for(@_){s/.*?\|([^>]+)>/$1/}print for sort{lc$a cmp lc$b}@_' >mod.loc;diff -y mod.ext mod.loc|grep '<'