create-symlinks

#!/usr/bin/env bash

symlink()
{
    if [ -z "$1" ] || [ -z "$2" ]; then
        echo "usage: symlink <source> <target>" >&2
        return 1
    fi

    if [ ! -e "$1" ]; then
        echo "Source does not exist: $1" >&2
        return 2
    fi

    if [ -L "$2" ]; then
        echo "Link exists: $2" 2>&1
        return
    fi

    if [ -e "$2" ]; then
        echo "Backing up existing $2" 2>&1
        mv "$2" "$2~$(date +%FT%T%z)"
    fi

    echo "Linking $2..."
    ln -s "$1" "$2"
}

source=$(cd "$(dirname "$0")" && pwd) # This script's parent directory.
target="$HOME"

case $(uname -s) in
    "Darwin" )
        os="macos" ;;
    "Linux" )
        if [ -e /etc/debian_version ]; then
            os="debian"
        else
            os="unix"
        fi ;;
    * )
        os="unix" ;;
esac

symlink "$os" this

symlink "$source/this/bin" "$target/bin"
symlink "$source/this/dotfiles/bash_aliases" "$target/.bash_aliases"
symlink "$source/this/dotfiles/bash_profile" "$target/.bash_profile"
symlink "$source/this/dotfiles/bashrc" "$target/.bashrc"
symlink "$source/this/dotfiles/zshrc" "$target/.zshrc"
symlink "$source/this/dotfiles/vimrc" "$target/.vimrc"
symlink "$source/this/dotfiles/profile" "$target/.profile"