fcmp - compare file identity

A shell utils that compares files for identity with mmap() and memcmp().

Usage

fcmp produces no output, but success is indicated by its return code.

$ fcmp file1 file2 && echo "Equal!"

Code	Meaning
0	The files are equal
1	The files are unequal
2	The files have unequal lengths, and therefor must be unequal
-1	There was an error

Therefor you can use this in shell scripts easily:

# Example

if fcmp "$1" "$2"; then
    echo "Files are equal!"
else
    echo "Files are not equal!"
fi

GPL'd with <3