Install dotfiles from git bare repository

install-dotfiles.sh

#!/bin/bash
# inspired by https://www.atlassian.com/git/tutorials/dotfiles

[ $# -eq 0 ] && { echo "Usage: $0 <remote-repo-url>"; exit 1; }

REMOTE_REPO=$1
BARE_REPO_PATH=$HOME/.dotfiles

git clone --bare $REMOTE_REPO $BARE_REPO_PATH

function config {
   /usr/bin/git --git-dir=$BARE_REPO_PATH --work-tree=$HOME $@
}

mkdir -p $HOME/.config-backup
config checkout
if [ $? = 0 ]; then
  echo "Checked out config.";
  else
    echo "Backing up pre-existing dot files.";
    config checkout 2>&1 | egrep "\s+\." | awk {'print $1'} | xargs -I{} mv {} .config-backup/{}
fi;
config checkout
config config status.showUntrackedFiles no

printf "\nDotfiles installed!"