Encontrar llaves públicas

sudo apt-get update |& tee /tmp/keymissing;\
for key in $(grep "NO_PUBKEY" /tmp/keymissing \
| sed "s/.*NO_PUBKEY //"); do echo -e "Processing \
key: $key"; gpg --keyserver subkeys.pgp.net \
--recv $key ; gpg --export --armor $key \
| sudo apt-key add -; done