- encapsulated code in functions to make it more readable
- validate presence of used tools/binaries (check if they're in PATH)
- more output
- FIX: make all uname/OSTYPE output to lowercase and check only for that
- refactored method name convert_path -> convertPathOnCygwin
- gave convert_path two arguments to make it more readable (Readability over tight code? I don't know what is required)
- some variable expansion now uses braces