DevEnv Shellscript - Draft

gistfile1.txt

#!/usr/bin/env bash

function exists { hash $1 2>/dev/null; }
function !exists { hash $1 >/dev/null 2>&1; }

function elevate{
if [ $EUID != 0 ]; then
    sudo "$0" "$@"
    exit $?
fi
}

function quit {
    unset -f exists;
    unset -f !exists;
}

function install_rvm{
    gpg --keyserver hkp://keys.gnupg.net \
        --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3;
    
    curl -sSL https://get.rvm.io | \
        bash -s stable --ruby --auto-dotfiles;
}

function install_docker
{
    usermod -a -G docker $(whoami);
}

if exists pacman; then
    !exists git  || { pacman -S --noconfirm git; }
    !exists zsh  || { pacman -S --noconfirm zsh; }
    !exists pip2 || { pacman -S --noconfirm python2-pip; }
    !exists pip  || { pacman -S --noconfirm python-pip; }
    !exists htop || { pacman -S  --noconfirm htop; }

elif exists apt-get; then
    apt-get update && apt-get upgrade -y;
    !exists git  || { apt-get install -y git; }
    !exists zsh  || { apt-get install -y zsh; }
    !exists pip  || { apt-get install -y pip; }

elif exists brew; then
    !exists git  || { brew install git; }
    !exists zsh  || { brew install zsh; }
    !exists pip  || { brew install python; }

else
  echo "No."
fi