Compression and archive format that stores one or more files into a single file, usually with a .zip file extension.

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6
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6answers
2k views

How to split a zip file across INDEPENDENT volumes

I have about 12 GB of image tiles made up of about 2 million files. I'd like to zip these up to make transferring them to a server simpler. I just plan on storing the files in the zip files for ...
2
votes
2answers
2k views

Command line alternative to rar.exe with complex switches

I am searching for a command line alternative to rar.exe from winrar which supports the multitude of options that rar.exe does, preferably one that is open source. Specifically, I am searching for a ...
1
vote
4answers
11k views

What is 7-Zip’s command-line argument to create a self extracting archive?

I looked everywhere and couldn't find a straight answer from anyone. If I want to package the contents of C:\Temp into a file called Temp.exe (in 7z format) that is self-extracting, how do I do it ...
1
vote
0answers
244 views

Compress files on Windows Server 2003

Duplicate Questions How to compress files with batch file? Using compact.exe didn't do what I wanted. I'd like to have an archive file created so that the files can be retrieved. This is ...
8
votes
2answers
4k views

In Mac OS X, how can I unzip a zip file without unzipping its contents?

I have a zip file that contains another type of archive (in this case, a jee app server WAR file, but this happens with other contained archive types as well). When I unzip the zip file, instead of ...
0
votes
2answers
2k views

Need software to convert RAR to ZIP (“store” mode - no compression) * Extract->re-archive changes date/time attributes

I have tried all of the following applications (download.cnet.com - the free ones), and none of them will convert an RAR archive to a ZIP, without compressing the files ("store" mode). 7-ZIP would be ...
10
votes
2answers
2k views

NTFS alternate stream in compressed archive?

Does any of the major compressed archive formats in Windows (e.g. zip, rar, 7z) support NTFS alternate data stream?
0
votes
1answer
579 views

How to unzip a windows-built .tar.gz in linux?

i wanna transfer files from my windows pc to linux server. suppose i have a file structure like this: img / logo.gif css / style.css index.php i tar.gz the directory, then upload, and then ...
9
votes
6answers
16k views

How can I achieve the best, standard ZIP compression?

I don't care how long it takes to compress, all I want to achieve is two things: The absolute best possible compression ratio Compatibility with standard readers, such as Windows and WinZip So ...
3
votes
4answers
316 views

Multiple [Stand-alone] zip files creation?

How can I automatically zip a group of files into multiple zip files (say, 2mb in size for each file), and that each zip file is a stand-alone zip file? (i.e. not mult-volume zip files, that you can't ...
0
votes
1answer
1k views

How to use RAR or ZIP to rename replaced files when extracting

I wish to extract files using RAR or ZIP but I need to be able to rename the files being replaced so that there is a copy of the previous version in case something goes wrong. Couldn't see any ...
2
votes
2answers
47 views

LamedropXPd-like very simple zipper?

A friend of mine needs to zip a bunch of MP3's on her locked-down XP or Vista PC at work. There are two requirements: Since she doesn't have admin rights, the application should either not require ...
0
votes
2answers
2k views

“Unsupported compression method 98” error when unzipping a file. What tools support it, other than WinZip?

I'm getting an error message: "unsupported compression method 98" when unzipping a file somebody sent to me. I've tried both an older version of WinZip, and 7-Zip 4.65. (Update: I've also tried ...
12
votes
3answers
38k views

Does Windows 7 have unzip at the command line installed by default?

There is a zip/unzip option in the context menu so is it accessible from the command line?
23
votes
6answers
16k views

On Linux/Unix, does .tar.gz versus .zip matter?

Cross-platform programs are sometimes distributed as .tar.gz for the Unix version and .zip for the Windows version. This makes sense when the contents of each must be different. If, however, the ...
7
votes
3answers
31k views

Howto unzip “.xz” file with 7z and lzma

I tried to uncompressed a "*.xz" file with both 7z and lzma. But they gave me such message: $ 7z x myfile.fq.xz 7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06 p7zip Version 4.57 ...
19
votes
2answers
13k views

Is zip's encryption really bad? [closed]

The standard advice for many years regarding compression and encryption has been that the encryption strength of zip is bad. Is this really the case in this day and age? I read this article about ...
2
votes
3answers
775 views

Unzip only updated files

Is there a way to unzip a zip file into a directory, but only do so for updates files (I mean the compressed files inside the zip)? I have a huge directory of files there, and only about 20% are ...
1
vote
1answer
364 views

File was deleted and then reappeared when folder was zipped

I am using Backtrack 4 Final, which is a Linux distro that is Ubuntu based. I had a directory that contained around 5 files. I deleted one of the files, which sent it to the trash. I then zipped the ...
1
vote
1answer
936 views

Problem with unpacking zip archive with UTF-8 file names in OS X if zip was made in Windows

I have packed my files in Windows 7 using Total Commander asking to use UTF-8 for file names. Then I tried to unpack my files in OS X, but Cyrillic names were messed. I have tried most programs -- ...
0
votes
2answers
10k views

How to troubleshoot if a zip file is valid or if it is big file size to be unzipped?

I am trying to unzip a file with the size of 2GB I am getting the following error : unzip CLTE_C_08.zip Archive: CLTE_C_08.zip End-of-central-directory signature not found. Either this ...
3
votes
1answer
1k views

Install a Program from ZIP File on Ubuntu Not Found Using Aptitude

I have a specific program that I use often on Windows and Mac, but today need to install it on a Linux machine. I downloaded the ZIP file from the vendors website, unzipped it to the Desktop and now ...
1
vote
2answers
1k views

How to extract ths sfx script from a file?

I have a packed auto-extract sfx file that runs the script. Is it possible to extract the script code?
1
vote
2answers
284 views

Restoring using SyncBack without profiles

I backed up my internal hard drive (C:) using SyncBack onto an external (USB) hard drive with maximum compression. I then performed a clean install of Windows Vista onto the computer. I forgot to ...
1
vote
3answers
128 views

Why the huge discrepancy in size between two similar zip files?

I use WinZip to zip entire directories of code and send them to a fellow programmer. He makes changes and sends the directories of code back to me. Ignoring the fact that this is not a good way to ...
17
votes
4answers
32k views

How to make 7-Zip faster

I normally use WinRAR over 7-Zip simply because it's faster and only a little less efficient with compression. I did a few tests on different filetypes and sizes comparing the 7-Zip and WinRAR default ...
1
vote
4answers
265 views

Zip only public directory

I've a lot of websites (100+ directories) I want to create a unique zip with only public subdirectory. My structure now is like: - Site 1 --- app --- tmp --- log --- public - Site 2 --- app --- ...
2
votes
1answer
1k views

Why does IE8 corrupt some zip files I download?

For some reason, when I download zip files with IE8, I get Folder is invalid or corrupted. But while downloading with Firefox or Chrome, I can open the file. Is there a fix for this?
31
votes
2answers
20k views

How secure are password-protected zip files?

In modern zip utilities like 7zip, you can specify a password when creating a .ZIP file. But, how secure is this? What encryption algorithm(s) are used to secure password-protected zip files?
1
vote
4answers
144 views

What is a good tool to zip large dataset w/ encryption?

WinZip bombed on us while trying to zip a large dataset, and 7zip doesn't have the Encryption feature. Is there a better tool out there?
7
votes
2answers
6k views

How can i recover a zip password using CUDA (GPU)?

How can i recover a zip password on linux using CUDA (GPU). For the past two days i tried using "fcrackzip" but it's too slow Few months back i saw some application that can use GPU / CUDA and get ...
2
votes
3answers
559 views

zip being too nice (Mac OS X)

I use zip to do a regular backup of a local directory onto a remote machine. They don't believe in things like rsync here, so it's the best I can do (?). Here's the script I use echo ...
1
vote
2answers
874 views

zip file on ubuntu without getting a cpgz file on extraction

I get a cpgz file when trying to extract the contents of a file created on an ubuntu system. Tried with 7zip, rar, zip, tar, nothing works... I really need to get this to work, so if somebody had a ...
6
votes
5answers
2k views

How can I archive a 30 GB file?

I have a 30 GB zip file containing an archive of digital materials available in the school library that I want to burn to DVD. Of course, 30 Gb is far too large for a single DVD and the content is ...
0
votes
2answers
1k views

Why does Windows Media Center try to open zip files?

Notes: OS is windows 7, browser is latest firefox. After saving a zip file to the desktop, Windows Media Center opens up. I looked around its config settings but could not find anything related to ...
6
votes
2answers
3k views

Analyzing properties of a ZIP file

I have a ZIP file, and I want to determine how it was compressed (the specific algorithm, properties used to apply that algorithm, etc.). What software can do this for me?
12
votes
1answer
245 views

Three formats? Why?

I needed to download the Ruby Source recently from here and it says, "available in three formats" which are .tar.bz2, .tar.gz and .zip. Is there any reason that we need all three formats? At least on ...
13
votes
2answers
10k views

Avoid unwanted path in Zip file

I'm making a shell script to package some files. I'm zipping a directory like this: zip -r /Users/me/development/something/out.zip /Users/me/development/something/folder/ The problem is that the ...
1
vote
2answers
202 views

Looking for archive tool with very simple command line usage [closed]

OS: Windows XP Requirements: Support compress/uncompress zip format Like gzip can use the original file name as archive file name, so no need to specify archive file name. gzip target_folder, so ...
7
votes
8answers
17k views

Extract large zip file (50 GB) on Mac OS X

I was trying to move the files to another hard drive. So I archived all my photos in one large ZIP file using the Mac OS X built-in compress function. But the file failed to extract. I've tried ...
2
votes
4answers
198 views

Open .rar files on Win Vista

What is the best option to open .rar files on Windows Vista?
70
votes
9answers
187k views

Can you zip a file from the command prompt using ONLY Windows' built-in capability to zip files?

I have a batch file that outputs a text file. I thought it would be nice if I could zip it up too. This will be used in an uncontrolled environment, so I can't make assumptions about the presence of ...
1
vote
1answer
613 views

Why do Office 2007 documents open as a zip file?

When try to open Office 2007 documents (.pptx, .docx, .xlsx) from the intranet, my computer tries to open them as a .zip file rather than the Office document itself . Any ideas why?
5
votes
3answers
738 views

How can I remove empty paths from a zip file?

I have a zip file that contains a empty path, which I want to be rid of. How can I clear it, while maintaining the rest of the zip? When I open the item in winzip I cannot see the empty file, but ...
4
votes
1answer
367 views

How to see just content of ZIP/RAR etc withoud downloading?

How to see just content of ZIP/RAR etc without downloading? for example like this http://dev.novemberborn.net/sifr3/nightlies/
0
votes
2answers
448 views

Specifying a destination path while creating a zip

Let us assume I have a zip file called patch.zip, when I run unzip -l patch.zip I get the following output. bin/a bin/b lib/c To this zip file I want to add a new file, "Readme.txt" located at ...
1
vote
2answers
792 views

Software to zip big files in small pieces

Is there any program on Mac which can zip big files in small pieces (free ones are preferred)?
76
votes
2answers
32k views

What is __MACOSX folder?

What are these __MACOSX folders I keep seeing in zip files made by people on OSX? Some take as much as 30% of the file. What program are producing these __MACOSX folder and how can mac users avoid ...
0
votes
4answers
3k views

How can I bulk rename files in a RAR or ZIP archive on the mac?

I have a set of archive files -- both zip and rar formats -- inside of which I need to rename some files. Specifically, I want to do something like this: for each archive file in a directory for ...
30
votes
1answer
45k views

Linux unzip command: Option to force overwrite?

I am writing a shell script that unzips a ZIP file into an existing hierarchy of files, potentially overwriting some of the files. The problem is that the unzip command asks for confirmation: replace ...