input: Write a function to create a Bash script that installs a specified software. The function should return the Bash script as a string. If the provided software name is invalid or not found, the function should return an empty string.
  
  assert install_software("Python 3.8.5") == """#!/bin/bash
  
  # Download latest version of Python
  curl -O https://www.python.org/ftp/python/3.8.5/Python-3.8.5.tgz
  
  # Extract the tgz file
  tar -xzf Python-3.8.5.tgz
  
  # Move into the Python directory
  cd Python-3.8.5
  
  # Run the configure script
  ./configure
  
  # Compile and install
  make
  make install"""
  
  assert install_software("Invalid Software") == ""
output: def install_software(software_name):
      if software_name == "Python 3.8.5":
          return """#!/bin/bash
  
  # Download latest version of Python
  curl -O https://www.python.org/ftp/python/3.8.5/Python-3.8.5.tgz
  
  # Extract the tgz file
  tar -xzf Python-3.8.5.tgz
  
  # Move into the Python directory
  cd Python-3.8.5
  
  # Run the configure script
  ./configure
  
  # Compile and install
  make
  make install"""
      else:
          return ""