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NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | AUTHOR | COLOPHON |
GENDIFF(1) General Commands Manual GENDIFF(1)
gendiff - utility to aid in error-free diff file generation
gendiff <directory> <diff-extension>
gendiff is a rather simple script which aids in generating a diff
file from a single directory. It takes a directory name and a "diff-
extension" 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
identical 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 and have chosen the extension "fix", copy it to
somefile.cpp.fix 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 .fix > mydiff-fix.patch
You should redirect the output to a file (as illustrated) unless you
want to see the results on stdout.
diff(1), patch(1)
Marc Ewing <marc@redhat.com>
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4th Berkeley Distribution Mon Jan 10 2000 GENDIFF(1)
Pages that refer to this page: rpmbuild(8)