Unix sort treatment of underscore character

Question

I have two linux machines, on which unix sort seems to behave differently. I believe I\'ve narrowed it down to the treatment of the underscore character.

If I run

Answer 1

sort order depends on the current value of the environment variable LC_COLLATE. Check your local documentation for 'locale', 'setlocale', etc. Set LC_COLLATE to 'POSIX' on both machines, and the results should match.