For installation instructions see the Section called Installing Diffutils-2.8.1 in Chapter 6.
Diffutils (2.8.1):
ftp://ftp.gnu.org/gnu/diffutils/
(Last checked against version 2.8.1.)
The programs from this package show you the differences between two files or directories. It's most common use is to create software patches.
Diffutils installs the following files:
cmp, diff, diff3 and sdiff
(Last checked against version 2.8.1.)
cmp and diff both compare two files and report their differences. Both programs have extra options which compare files in different situations.
The difference between diff and diff3 is that diff compares 2 files, diff3 compares 3 files.
sdiff merges two files and interactively outputs the results.
(Last checked against version 2.7.)
Bash: sh
Binutils: ld, as
Coreutils: cat, chmod, cp, date, hostname, install, mv, rm, tr
Diffutils: cmp
GCC: cc1, collect2, cpp0, gcc
Grep: egrep, grep
Make: make
Sed: sed