sudo curl -L https://nixos.org/nix/install | sh
#if multi user
sh <(curl https://nixos.org/nix/install) --daemon
wget https://raw.githubusercontent.com/ttaki/nix-shell/master/shell.nix
nix-shell shell.nix
install https://github.com/ttaki/dotfiles-shell
curl https://raw.githubusercontent.com/ttaki/dotfiles-shell/master/sample/setup.sh | bash