look for a package called patchutils, which includes interdiff.
mulix@alhambra:~$ apt-cache show patchutils
Package: patchutils
[snipped]
Description: Utilities to work with patches
This package includes the following utilities:
- combinediff creates a cumulative patch from two incremental patches
- dehtmldiff extracts a diff from an HTML page
- filterdiff extracts or excludes diffs from a diff file
- fixcvsdiff fixes diff files created by CVS that "patch" mis-interprets
- flipdiff exchanges the order of two patches
- grepdiff shows which files are modified by a patch matching a regex
- interdiff shows differences between two unified diff files
- lsdiff shows which files are modified by a patch
- recountdiff recomputes counts and offsets in unified context diffs
- rediff fixes offsets and counts of a hand-edited diff
- splitdiff separates out incremental patches
- unwrapdiff demangles patches that have been word-wrapped
-- Muli Ben-Yehuda http://www.mulix.org http://syscalltrack.sf.net- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/