Install heroku without sudo on linux

install_heroku_without_sudo_linux.sh

#!/bin/sh
{
    HEROKU_CLIENT_URL="https://s3.amazonaws.com/assets.heroku.com/heroku-client/heroku-client.tgz"

    sh <<SCRIPT

  # set appropriate HEROKU_DIR env variable
  # default is ~/.local/heroku

  # download and extract the client tarball
  rm -rf "${HEROKU_DIR:=~/.local/heroku}"
  mkdir -p "$HEROKU_DIR"
  cd "$HEROKU_DIR"

  if [ -z "$(which wget)" ]; then
    curl $HEROKU_CLIENT_URL | tar xz
  else
    wget -O- $HEROKU_CLIENT_URL | tar xz
  fi

  mv heroku-client/* .
  rmdir heroku-client

SCRIPT

    # remind the user to add to $PATH if they don't already have it
    echo "Add the Heroku CLI to your PATH using:"
    echo "$ echo 'PATH=\"$HEROKU_DIR/heroku/bin:\$PATH\"' >> ~/.profile"
}