SLUGFLAGS="--no-default-keyring --no-options --keyring slug-keyring.gpg"
KEYSERVER=wwwkeys.uk.pgp.net

echo -n "Extracting keys..."
KEYS=$(gpg $SLUGFLAGS --list-keys --with-colons | grep ^pub | cut -d: -f5)
echo " done."

echo "Receiving keys..."
echo $KEYS | xargs gpg $SLUGFLAGS --recv-keys --keyserver $KEYSERVER
echo " done."