One of the most popular differences between operating systems is the new line separators used in each one of them.

Typically, the top three OS out there print new lines this way:

• Windows - CRLF, \r\n
• Mac OS X - CR, \r
• Linux/UNIX - LF, \n

It's normally an issue when working with a text document under different OS (or deploying to servers).

Luckily, there is a function in Eclipse that would help you automatically convert line endings - "Convert Line Delimiters To" under "File"

As a Linux user myself I personally prefer the UNIX-style as our servers are always running under some Linux derivative (and it helps mitigating possible issues related to this for version control systems or deploy scripts).