GENDIFF(1)GENDIFF(1)NAMEgendiff - utility to aid in error-free diff file generation
SYNOPSISgendiff <directory> <diff-extension>
DESCRIPTIONgendiff is a rather simple script which aids in generating a diff file
from a single directory. It takes a directory name and a "diff-exten‐
sion" as its only arguments. The diff extension should be a unique
sequence of characters added to the end of all original, unmodified
files. The output of the program is a diff file which may be applied
with the patch program to recreate the changes.
The usual sequence of events for creating a diff is to create two iden‐
tical directories, make changes in one directory, and then use the diff
utility to create a list of differences between the two. Using gendiff
eliminates the need for the extra, original and unmodified directory
copy. Instead, only the individual files that are modified need to be
saved.
Before editing a file, copy the file, appending the extension you have
chosen to the filename. I.e. if you were going to edit somefile.cpp,
copy it to somefile.cpp.save before editing it. Then edit the first
copy (somefile.cpp).
After editing all the files you need to edit in this fashion, enter the
directory one level above where your source code resides, and then type
$ gendiff somedirectory .orig > mydiff-orig.patch
You should redirect the output to a file (as illustrated) unless you
want to see the results on stdout.
SEE ALSOdiff(1), patch(1)AUTHOR
Marc Ewing <marc@redhat.com>
4th Berkeley Distribution Mon Jan 10 2000 GENDIFF(1)