grep -rhP '\buse\b' * | perl -E 'say $_ =~ /\buse\s+([\w:]+)/ for <>;' | sort | uniq | while read packname; do perldoc -l $packname 2>&-; done | grep -v '.pod$' | while read packfile; do echo -n $packfile ' -> '; grep -P '\$([\w:]){0,}VERSION\b\s+=\s{0,}[[:punct:]]{0,1}\d' $packfile; done