dotfiles.sh

#!/bin/bash
#
# defaults
DOTFILES_MASTER="$HOME/dotfiles"
INSTALL_PATH="$HOME"

echo "================"
echo "Install dotfiles"
echo "================"
echo "Install a dotfile to the system."
echo
echo "Usage: $0 install dotfile [-p installpath]"
echo "       -p installation path (default: $HOME)"
echo
echo "Example: install <dotfile> <path_to_install_to>"
echo
echo "--------------------------------------------"

install() {
  local dotfile="$1"
  local installpath="$INSTALL_PATH"

  if [ "$#" -eq 2 ]; then
    installpath="$2"
  fi

  if [ ! -d "$installpath" ]; then
    echo "Install path '$installpath' does not exist. Aborting."
    return 1
  fi

  SRC="$DOTFILES_MASTER/$dotfile"
  if [ -e "$SRC-$HOSTNAME" ]; then
    SRC="$SRC-$HOSTNAME"
  fi

  if [ -f "$dotfile" ]; then
    echo "Installing $dotfile to $installpath/$(basename "
        $dotfile")"
    ln -sfv "$SRC" "$installpath/$(basename "$SRC")"
  else
    echo "Error: $dotfile does not exist"
    return 1
  fi
}

# this should fail:
# install nullfile

# ================
# Install dotfiles
# ================
# ${dotfile//$'\r'} removes any carriage return characters that may be present in the input file.
# This can happen if the input file was created on a Windows system or if it was edited with certain
# text editors.
#
# -r: read the last line of the file even if it does not end with a newline character
while read -r dotfile; do
  dotfile="${dotfile//$'\r'/}"
  install "$dotfile"
done <.dotfiles