Unzip /F and /U not working in V12

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.

May 20, 2008
Syracuse, NY, USA
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\test1.txt
<= V:\ziptest\test2.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?

And ...

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
<= V:\ziptest\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%)
Similar threads
Thread starter Title Forum Replies Date
S UNZIP all archives to separate subdirectory Support 10
C unzip problems Support 2
D unzip fails to find valid license Support 3
Jay Sage Fixed Mistake in Command Dialog for UNZIP Support 0
fishman@panix.com Inadequate HELP for UNZIP command. Support 3
H 12.10 UNZIP ignores destination path spec Support 2
Phileosophos unzip not using specified path Support 5
D unzip problem in tcmd 12 b 36 Support 3
nikbackm unzip issues in v12 Support 12
fishman@panix.com Unzip in 12.0 Support 1
H UNZIP /F and /U still not right 12.0.27 Support 0
H V12 UNZIP very slow under certain circumstances Support 3
H UNZIP /U issue Support 0
Phileosophos Unzip doesn't extract to specified output folder Support 5
D unzip /d in directory with space in name Support 1
fishman@panix.com Problem with unzip Support 4
H ZIP/UNZIP issues Support 4
Joe Caverly ZIP, UNZIP v11 Beta Support 6
twaterloo FolderMonitor for the 1st time not working Support 5
Tim Rowe NTFS Descriptions not working Support 13
J Batcomp still not working for me in TCMD27 Support 1
M Oracle batch OPatch.bat.bat not working in TCC but correctly in CMD Support 5
M Why did BEEP just quit working? Support 12
cgunhouse SETLOCAL not working in BDEBUGGER Support 9
nickles ANSI Colors Windows 7 no longer working Support 6
K ANSI Not Working Support 8
thorntonpg option /u not working The directory name is invalid Support 5
Charles Dye Is the "File Associations" installer dialog working? Support 4
H @ceiling @floor @int not working version 21.01.63 Support 9
K Command Line Selection Not Working Support 12
G Extended directory search not working Support 4
B %@fileseek is not working ? Support 2
C "Take Command has stopped working" Support 1
H New command not working well in Windows 7 Support 4
C "TakeCommand has stopped working" Support 3
N ping DNS lookup not working Support 1
N Updater/silentall not working? Support 1
K Help Not Working Support 11
R Fixed set /r has stopped working in build 35 Support 4
U Keys and IDX not working Support 11
Jesse Heines How to? Everything Tool Not Working After Version 20 Installation Support 8
WavSlave Fixed LIST /U not working in TCC v19 Support 5
Jay Sage %_selected no longer working Support 15
S iftp copying pgp files from ftp is not working Support 11
fishman@panix.com Extended Directory Searches are not working for me in CDD Support 9
J How to set working directory Support 10
vefatica Fixed LEAVE N not working Support 7
P %date5 not working Support 6
M WAD PDir not working correctly... Support 5
Detlef Fixed ParameterChar in TCMD.INI no longer working Support 35

Similar threads