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Diff and Patch Behavior
From: |
shagymoe |
Subject: |
Diff and Patch Behavior |
Date: |
19 Feb 2007 09:25:17 -0800 |
User-agent: |
G2/1.0 |
I am trying to update directory A with changes that have been made to
a copy of directory A called directory B. The changes include edits
and new files. I'm trying to accomplish this via diff and patch.
( Yes, friends, I know the wondrous benefits of svn, but don't want to
use it in this case. :D )
Anyway, I run the following diff command:
diff -Naur /home/shagymoe/A /home/shagymoe/B > /home/shagymoe/
b_to_a.diff
Then, I run the patch command:
patch -u -p0 --fuzz=3 < /home/shagymoe/b_to_a.diff >> /home/shagymoe/
b_to_a_patch.log
What I don't understand is that the patch command updates A with the
edits, but then tries to add the new files to B. So, A is patched
with all of the edits and B is "patched" with the new files. The
patch to B obviously fails because the files already exist and then it
creates a .rej file and logs the errors.
Ok, so here is the strange part.
If I do EXACTLY the same commands, but delete or rename B before
running patch, A is updated with BOTH the edits and the new files.
That makes no sense to me at all. I've played with --unidirectional-
new-file and other things, but I just can't seem to make it do what I
want.
Any ideas? Your help is greatly appreciated.
Shagymoe
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