makesymlinks.sh

#!/bin/bash
############################
# .make.sh
# This script creates symlinks from the home directory to any desired dotfiles in ~/dotfiles
############################

########## Variables

dir=~/dotfiles                    # dotfiles directory
olddir=~/dotfiles_old             # old dotfiles backup directory
files="env.sh vimrc zshrc oh-my-zsh ycm_extra_conf.py gitconfig zsh_aliases gitignore_global"    # list of files/folders to symlink in homedir
neovim="init.vim"

##########

# create dotfiles_old in homedir
echo -n "Creating $olddir for backup of any existing dotfiles in ~ ..."
mkdir -p $olddir
echo "done"

# change to the dotfiles directory
echo -n "Changing to the $dir directory ..."
cd $dir
echo "done"

# move any existing dotfiles in homedir to dotfiles_old directory, then create symlinks from the homedir to any files in the ~/dotfiles directory specified in $files
for file in $files; do
    echo "Moving any existing dotfiles from ~ to $olddir"
    mv ~/.$file $olddir
    echo "Creating symlink to $file in home directory."
    ln -s -f $dir/$file ~/.$file
done

# Backup old neovim config file & move the new neovim file into place
mv ~./config/nvim/init.vim $olddir
mkdir ~./config/nvim
ln -s -f $dir/init.vim ~./config/nvim/init.vim

install_zsh () {
# Test to see if zshell is installed.  If it is:
if [ -f /bin/zsh -o -f /usr/bin/zsh ]; then
    # Set the default shell to zsh if it isn't currently set to zsh
    if [[ ! $(echo $SHELL) == $(which zsh) ]]; then
        chsh -s $(which zsh)
    fi
else
    # If zsh isn't installed, get the platform of the current machine
    platform=$(uname);
    # If the platform is Linux, try an apt-get to install zsh and then recurse
    if [[ $platform == 'Linux' ]]; then
        if [[ -f /etc/redhat-release ]]; then
            sudo yum install zsh
            install_zsh
        elif [[ -f /etc/debian_version ]]; then
            sudo apt-get install zsh
            install_zsh
        fi
    # If the platform is OS X, tell the user to install zsh :)
    elif [[ $platform == 'Darwin' ]]; then
        echo "Please install zsh, then re-run this script!"
        exit
    fi
fi
}

install_zsh