#!/bin/sh

# This is a script. This script is the documentation. To read the
# documentation, simply read the script. This script. The one you're reading.
# See? You're doing it. You're reading the documentation.
#
# Example
#     ssh-keygen-user peterparker
# Generates the following:
#     ~/peterparker.ssh/id_rsa
#     ~/peterparker.ssh/id_rsa.pub
#
# Options
#
# Pass username as the first argument; otherwise, 'noah' is assumed.
USERNAME=${1:-noah}

echo "# Initialize key directory, files, and permissions."
mkdir ~/${USERNAME}.ssh
chmod 700 ~/${USERNAME}.ssh
ssh-keygen -q -N '' -f ~/${USERNAME}.ssh/id_rsa
chmod 600 ~/${USERNAME}.ssh/id_rsa
chmod 644 ~/${USERNAME}.ssh/id_rsa.pub

echo
echo "# MANUAL STEP: Someone needs to copy ~/${USERNAME}.ssh/ to remote host."
echo "# MANUAL STEP: Then someone needs to append this to the appropriate"
echo "# authorized_keys file."
echo
echo "# Example connection command that should now work:"
echo "ssh -i ~/${USERNAME}.ssh/id_rsa ${USERNAME}@example.com"