Bash/ZSH function - Enables you to upload one or more GPG / PGP public keys to multiple keyservers in one command.

gpg-upload-key.sh

##################
#
# This is a ZSH/Bash function that helps you to quickly publish one or more GPG keys to
# several keyservers using just one command.
#
# Add the below code to your ~/.bashrc or ~/.zshrc (or put it in a separate file, if you
#   understand how and why to source files - whatever you prefer).
# 
# You can use it like so:
#
#   upload-keys ABCD1234DEFA5632 DEFA123A56236
#
# That would upload both of those keys, to all keyservers listed in the 'keyservers'
# variable, and display progress info as it does so.
#
# You can use it to publish just a single key, or 100 keys - just pass each 
# key id / fingerprint you want to publish as an argument to the function.
#
# This function was created by Someguy123 (github.com/Someguy123 | www.privex.io)
#
# I (Someguy123) also wrote the list of keyservers, effectively in priority order,
# with keys.openpgp.org generally being the biggest keyserver, and used by default
# by most clients - while almost nothing uses pgp.cyberbits.eu (that i'm aware of).
#
##################

keyservers=(
   hkps://keys.openpgp.org
   hkps://keyserver.ubuntu.com
   hkps://gpg.privex.io
   hkps://pgpkeys.mit.edu
   hkps://pgp.surf.nl
   hkp://pgp.cyberbits.eu
)

upload-keys() {
  echo -e " >> Going to upload the following keys:"

  for xkey in "$@"; do
    echo -e "    $xkey"
  done
  sleep 2
  for xkey in "$@"; do
      echo -e "\n\n---------\n Uploading GPG key: $xkey \n---------\n"
      for ks in "${keyservers[@]}"; do
        echo -e "    $ks <- $xkey";
        gpg --keyserver "$ks" --send-keys "$xkey";
      done
  done
  echo -e "\n\n---------\n FINISHED UPLOADING $# KEYS :) \n---------\n"
}

more-keyservers.sh

##########
# Generally you'd only really need to publish to the top 4 in gpg-upload-key.sh, as it includes
# two lesser-known servers that are unlikely to be used regularly these days.
#
# But, if you REALLY want to publish to as many keyservers as possible, here's an extended
# keyserver list to help you propagate your key across the world :)
#
# The keyservers in this file were found and accumulated by Someguy123 (github.com/Someguy123 | www.privex.io)
#
#########
keyservers=(
  hkps://keys.openpgp.org hkps://gpg.privex.io hkps://keyserver.ubuntu.com 
  hkps://keyring.debian.org hkp://pgp.cyberbits.eu hkp://pgpkeys.mit.edu 
  hkps://pgp.surf.nl hkps://pgp.uni-mainz.de hkps://keyserver.insect.com 
  hkps://sks.pod01.fleetstreetops.com hkps://keyserver-03.2ndquadrant.com
 )