Convert git repo from https to ssh

https_to_ssh

#/bin/bash
#-- Script to automate https://help.github.com/articles/why-is-git-always-asking-for-my-password

REPO_URL=`git remote -v | grep -m1 '^origin' | sed -Ene's#.*(https://[^[:space:]]*).*#\1#p'`
if [ -z "$REPO_URL" ]; then
  echo "-- ERROR:  Could not identify Repo url."
  echo "   It is possible this repo is already using SSH instead of HTTPS."
  exit
fi

BRE='https://((gist\.)*github\.com)/([^/]*)/(.*(\.git|$))'

HOST=`echo $REPO_URL | sed -Ene"s#$BRE#\1#p"`
if [ -z "$HOST" ]; then
  echo "-- ERROR:  Could not identify GitHub Host."
  exit
fi

GIST=`echo $REPO_URL | sed -Ene"s#$BRE#\2#p"`

USER=`echo $REPO_URL | sed -Ene"s#$BRE#\3#p"`
if [ -z "$USER" ]; then
  echo "-- ERROR:  Could not identify User."
  exit
fi

REPO=`echo $REPO_URL | sed -Ene"s#$BRE#\4#p"`
if [ -z "$REPO" ]; then
  echo "-- ERROR:  Could not identify Repo."
  exit
fi

[ -n "$GIST" ] && USER=''
NEW_URL="git@$HOST:$USER/$REPO"
echo "Changing repo url from "
echo "  '$REPO_URL'"
echo "      to "
echo "  '$NEW_URL'"
echo ""

CHANGE_CMD="git remote set-url origin $NEW_URL"
`$CHANGE_CMD`

echo "Success"