Create a GPG key with name and email

make-gpg-key.sh

#!/bin/bash
set -e
set -x

email=$1
name=$2

usage() {
  echo "Usage: $0 <email> <name>"
}

if [ -z "${email}" ]; then
  echo "Error: Email address is required."
  usage
  exit 1
fi

if [ -z "${name}" ]; then
  echo "Error: Full name is required."
  usage
  exit 1
fi

tmpcfg=$(mktemp)

cat <<EOF > $tmpcfg
Key-Type: 1
Key-Length: 4096
Name-Real: ${name}
Name-Email: ${email}
Expire-Date: 0
%no-protection
%commit
%echo Done
EOF

key_id=$(
  gpg --batch --full-generate-key --status-fd 1 "${tmpcfg}" \
    | awk '/^\[GNUPG:\] KEY_CREATED/ { print $4 }'
)

gpg --batch --armor --export $key_id > gpg-public-key.pem
gpg --list-packets < gpg-public-key.pem | awk '$1=="keyid:"{print$2}' | head -n 1 > gpg-key-id

rm -f "${tmpcfg}"

printf "\nGenerated GPG key: "
cat gpg-key-id