On Thu, 02 Sep 2010 22:01:02 -0400, Howard Goldstein <>
|If I use UNZIP with either the /U or /F switches, no files are extracted
|even though the zip file contains many files that are newer than those in
|the target directory. This is with 12.00.26 under XP.
I can reproduce that.
And UNZIP /C doesn't work very well:
v:\ziptest> type test1.txt
v:\ziptest> zip zipfile.zip *.txt
v:\ziptest> unzip /c zipfile.zip test1.txt
It's the same for "zip /c".
v:\ziptest> zip /c zipfile.zip test1.txt
The help says "ZIP /C" and "UNZIP /C" do the same thing ... is that so?
Is there a way to **uncontitionally** put a file into a zip archive, replacing
it if necessary (and regardless of timestamp)? It's the default behavior of my
v:\ziptest> zip zipfile.zip test1.txt
TCC: Error in archive V:\ziptest\zipfile.zip :
File already exists in the archive. "V:\ziptest\test1.txt"
v:\ziptest> u:\zip.exe zipfile.zip test1.txt
updating: test1.txt (172 bytes security) (stored 0%)