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perl -e "for (glob '*') { my ($id) = /(\d+)$/ || /^(\d+)/; print qq($_ + => id=$id\n); }"
>perl -MO=Deparse -e "for (glob '*') { my ($id) = /(\d+)$/ || /^(\d+)/ +; print qq($_ => id=$id\n); }" use File::Glob (); ... -e syntax OK >