Comparison function that compares two text files in Unix

Question

I was wondering if anyone could tell me if there is a function available in unix, bash that compares all of the lines of the files. If they are different it should output true/f

Answer 1

There is a simple cmp file file command that does just that. It returns 0 if they are equal and 1 if they are different, so it's trivial to use in ifs:

if cmp file1 file1; then
    ...
fi

Hope this helps =)