Helper script to setup github ssh as mentioned in github documentation

setup_github_ssh_keys.sh

#!/usr/bin/env bash

# Script for "Connecting to github with ssh"
# Ref: https://docs.github.com/en/authentication/connecting-to-github-with-ssh
# Author: Kiran Koirala
# Github: koiralakiran1
#
# Asks for <filename> and <email>.
# Doesn't check for existing ssh keys.
# Uses "ed25519" key type (hardcoded).
# Key saved to ~/.ssh/<filename>.
# <filename> is "id_ed25519" by default.
#
# To run directly from gist raw url
# Link to gist raw file might change
# $ sh <( curl -s gist_raw_link_to___setup_github_ssh_keys.sh )

set -e

DEFAULT_KEY_TYPE="ed25519"
DEFAULT_FILENAME="id_$DEFAULT_KEY_TYPE"

# Ask for file name (~/.ssh/<filename>)
read -p "Enter filename ~/.ssh/(default = $DEFAULT_FILENAME): " filename

# Ask for email
read -p "Enter email: " email

if [[ -z $filename ]]; then
	filename=$DEFAULT_FILENAME
fi

if [[ -z $email ]]; then
	echo "Email is required."
	exit 1
fi

# Step: Generate new key and add to ssh-sgent
# Ref: https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent
ssh-keygen -t $DEFAULT_KEY_TYPE -C $email -f ~/.ssh/$filename

eval "$(ssh-agent -s)"

ssh-add ~/.ssh/$filename

# Step: Add ssh key to github account
# Ref: https://docs.github.com/en/authentication/connecting-to-github-with-ssh/adding-a-new-ssh-key-to-your-github-account
echo -e "Here's your public ssh key. Copy these and add it to github: \n"
cat ~/.ssh/$filename.pub

echo -e "Press any key when done: \n"

read

# Step: Testing your ssh connection
# Ref: https://docs.github.com/en/authentication/connecting-to-github-with-ssh/testing-your-ssh-connection
echo "Connecting to github with new ssh key "
ssh -T git@github.com