I am stuck on a Windows machine most of the time, but I prefer Linux. Also, Ruby on Rails on Windows is a real PITA. So, I configure a VM with all the necessary development tools and share my project/work folders with the VM and mount it using mount.vboxsf. Then I run the VM in headless mode and SSH into it.

Installing Python

• If Python is not already installed, install it using $ pacman -S python2 (replace with python3 if you need Python 3).
• Create a python link for python2:

$ sudo  ln  -s  /usr/bin/python2  /usr/bin/python

• If PIP is not installed:

$ wget  https://bootstrap.pypa.io/get-pip.py  
$ sudo  python  get-pip.py  

• PIP can be invoked in one of the following ways:

$ sudo  python  -m  pip  install  [package]  
$ sudo  pip  [package]

Installing Ruby, Rails and Node.js:

$ sudo  pacman  -S  ruby`  
$ gem  install  rails
$ gem  install  bundler
$ gem  update
$ sudo  install  nodejs         # Installing Node.js also fixes JavaScript issues while running Jekyll

• To ~/.bashrc add the following lines and use the $ source ~/.bashrc command to update the environment with the new values:

PATH="$(ruby -e 'print Gem.user_dir')/bin:$PATH)"
export GEM_HOME=$(ruby -e 'print Gem.user_dir')

• If you plan to SSH to this machine, the /etc/environment file is a better option than ~/.bashrc:

PATH="/home/schaazzz/.gem/ruby/2.2.0/bin":$PATH
GEM_HOME="/home/schaazzz/.gem/ruby/2.2.0"

Installing and Configuring SSH:

$ sudo  pacman  -S  openssh
$ nano  /etc/ssh/sshd_config         # Enable "AddressFamily any"
$ sudo  systemctl  enable  sshd.service