generate ssh bash script

create-ssh.sh

#!/bin/sh
# https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent
# download this script an make it executable with `chmod +x create_ssh

if [ -n "$1" ]; then
    COMMENT=$1
else
    COMMENT=$USER
fi

if [ -n "$2" ]; then
    IDENTIFIER=$2
else
    IDENTIFIER=$(date +"%Y%m%dT%H%M%S")
fi

if [ -n "$3" ]; then
    TARGET=$3
else
    TARGET=$HOME/.ssh
fi

ssh-keygen -t ed25519 -C "${COMMENT}" -f "${TARGET}/${IDENTIFIER}_ed25519"

echo "copy/paste the text below this line when adding the key to your account"
echo "----------"
cat "${TARGET}/${IDENTIFIER}_ed25519.pub"
echo "----------"
echo "copy/paste the text above this line when adding the key to your account"