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

learn more… | top users | synonyms

24
votes
5answers
21k views

Compressing folders on a mac, without the .DS_Store

Is there anyway to get rid of the .DS_Store when compressing a folder on a mac? I work on a mac and send work to clients in zip format, but always get questioned on the .DS_Store folder inside them. ...
8
votes
2answers
5k views

View Contents of Archive in Mac OS X

Aside from unzip -l, do I have any non-command line options for viewing an archive's contents on Mac OS X?
0
votes
2answers
934 views

Does Windows XP has any compression program by default?

I would like to compress a database backup file on Windows. I wonder if Windows XP has by default any program (like WinZip) that I can use. If yes, where is it located ? If not, could you suggest a ...
2
votes
1answer
915 views

Arabic in File Name Causes Compressed (zipped) Folders Error

How can I get files named with Arabic characters added to and extracted from a .zip file. For example, under Windows XP, I get an error message that says "The compression cannot be performed becasue ...
16
votes
1answer
18k views

How to list the contents of a zip along w/ file sizes and compression ratio via cmd line

How do I list the contents of a zip along w/ file sizes and compression ratio (or packed size) on osx w/ command line tools?
1
vote
1answer
183 views

Winzip Legacy Format in Ubuntu?

I have a script that uses the ZIP command in linux (Ubuntu), and changes the name to make it executable for a certain program. Now I realized the reason this program was not unzipping and installing ...
2
votes
3answers
510 views

Want to zip up folder with 20K images to upload, how to breakup zips and then unzip?

I have a folder with about 1 gig worth of images I have to upload to a server. I want to zip/tar them up, preferably into multiple files that I can upload to my ubuntu server. Then I want to ...
22
votes
7answers
45k views

Which is more efficient - tar or zip compression? What is the difference between tar and zip?

I'm working in Linux environment and want to know about tar and zip commands. Which is more efficient - tar or zip? I also need to know the differences between the tar and zip commands. Can anyone ...
1
vote
1answer
892 views

rar command line for creating .zip files

Is there a way to use the rar command line to create .zip files?
2
votes
2answers
1k views

Windows XP command line for zipping files

Is there a way to zip the files in XP using the windows default zip utility through command prompt?
2
votes
2answers
3k views

file permission in zip/7z/rar?

I want to package my application for linux, I use zip/tar.gz/7z/rar to do the compress in Windows. Because I do the compress in Windows, so when I extract the package in Linux, the file permission ...
6
votes
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
584 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
319 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
39k 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
17k 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 ...
8
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
790 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
369 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
958 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
287 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
33k 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
269 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
878 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
3k 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
2k 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
11k 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 ...