http://ftp.gnu.org/gnu/diffutils/
ftp://ftp.gnu.org/gnu/diffutils/
+* The patch utility 'patch'.
+ + Mandatory if you use gnulib-local diffs. Using the platform's native
+ utilities gives good portability exposure, but you can also use GNU
+ patch.
+ + Homepage:
+ http://www.gnu.org/software/patch/
+ + Download:
+ http://ftp.gnu.org/gnu/patch/
+ ftp://ftp.gnu.org/gnu/patch/
+
* Grep.
+ Mandatory. Using the platform's native grep gives good portability
exposure, but you can also use GNU grep.