Automatically clones and copies my tilde repository into the user's home folder

get-tilde.sh

#!/bin/bash
#
# get-tilde.sh
#
# Clone the tilde repository and install it into the user's home directory
# If you have wget installed, you can download the installer with this:
# wget https://gist.githubusercontent.com/Kaizen86/0d2c2727231cae0328e529501ac0e406/raw/6b019bdc055aa0753958787f33d9d8d86a139e10/get-tilde.sh

git clone https://github.com/Kaizen86/tilde.git
# Did that work?
if [ $? -ne 0 ]; then
  echo Abort - failed to clone.
  exit
fi

echo # Separator newline

# Move all files, including hidden ones, to ~
shopt -s dotglob
mv -vn tilde/* ~/ # Crucially, we mustn't clobber existing files!

# If the folder cannot be removed, then it still has stuff in it.
rmdir tilde
if [ $? -ne 0 ]; then
  # Ask the user how they would prefer to solve this
  echo -e "\nWarning: conflicting items"
  echo Some files already exist in ~, so those were skipped.
  echo You can either merge the files manually, or overwrite them.

  read -p "Proceed to overwrite? [y/N] " opt
  # Exit if anything other than Y was entered
  case $opt in
    [Yy]* ) ;; # Do nothing and continue
    * ) echo Aborting.; exit;;
  esac
  # User chose to continue.

  # This time we need to account for conflicting directories
  # mv will refuse to rename into an existing folder; it must instead be copied.
  cp -rv ./tilde/* ~ && rm -Rf ./tilde/*
  # Try again
  rmdir tilde
  if [ $? -ne 0 ]; then
    # If this somehow fails again, then I'm at a loss.
    echo huh what
    exit
  fi
fi

# All done! User can now load the customisations
echo -e "\nInstallation complete!"
echo 'You can now run "source ~/.bashrc" :)'