All the pants that are fit to fit

anujypants.sh

#!/bin/bash

# Usage:
#   (first time)
#     ./anujypants.sh from_scratch
#   (subsequently)
#     ./anujypants.sh

#-----------------------------------------------------------------------------
# Load RVM into a shell session *as a function*
#-----------------------------------------------------------------------------

if [[ -s "$HOME/.rvm/scripts/rvm" ]] ; then
  # First try to load from a user install
  source "$HOME/.rvm/scripts/rvm"
elif [[ -s "/usr/local/rvm/scripts/rvm" ]] ; then
  # Then try to load from a root install
  source "/usr/local/rvm/scripts/rvm"
else
  printf "ERROR: An RVM installation was not found.\n"
  exit 1
fi

#-----------------------------------------------------------------------------
# Create the anujypants gemset in ruby 1.9.2
#-----------------------------------------------------------------------------

rvm 1.9.2
if [[ $1 = "from_scratch" ]] ; then
  rvm --force gemset delete anujypants
  rvm gemset create anujypants
fi
rvm 1.9.2@anujypants

#-----------------------------------------------------------------------------
# Install rails 3.1.3, then run bundler to install all the other stuff
#-----------------------------------------------------------------------------

if [[ $1 = "from_scratch" ]] ; then
  gem install rails -v=3.1.3 --no-rdoc --no-ri
  rm -rf anujypants
  rails new anujypants
  cd anujypants
  bundle
else
  cd anujypants
fi

#-----------------------------------------------------------------------------
# Write the actual script
#-----------------------------------------------------------------------------

cat > lib/myFunnyIronicTshirt.rb <<ENDOFFILE
#!/usr/bin/env ruby
require 'rails/all'
p Rails.env
ENDOFFILE

chmod 700 lib/myFunnyIronicTshirt.rb
./lib/myFunnyIronicTshirt.rb