Create a SSH key pair (RSA) in Ubuntu 14.04.

ubuntu-14.04-create-ssh-key-pair.sh

#!/usr/bin/env bash


cd
set -eu

# Create passphrase-less RSA key pair for SSH.
# - 'rsa': protocol version 2
# - 4096: the number of bits in the key to create (for RSA keys, minimum: 768, default: 2048 bits)
# - "": passphrase
# - '~/.ssh/id_rsa': the new key file
ssh-keygen -t rsa -b 4096 -N "" -f ~/.ssh/id_rsa
printf "\npublic key of the generated RSA key pair:\n\n"
cat ~/.ssh/id_rsa.pub