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

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Why should I prefer 7zip over WinZip in Windows environment? [closed]

I know Winzip is not free and 7-zip is free . Other than this is there any reason why I should use 7ZIP over Winzip for compression ? I am using Windows 7 .
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3answers
3k views

Why does a zip file appear larger than the source file especially when it is text?

I have a text file that is 19 bytes in size and having compressed the file using zip and 7zip, it appears to be larger. I had a read of the question on Why is a 7zipped file larger than the raw file? ...
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2answers
11k views

What's the difference between the .war and .zip file formats?

I've heard that they are the same, but I would like to know if the compression is always the same. Can I always rename .zip files to .war, and vice-versa?
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3answers
563 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 ...
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2answers
4k views

How do I stop using Winzip and let Windows handle .zip files natively?

Anytime I download a .zip file or create a compressed folder, my PC makes it a Winzip file, which is no good because I don't want to pay their fee to get the full version (the version I have was a ...
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2answers
1k views

Can a zip file be executable?

Can a zip file executable? For instance can you have a virus in the form of a zip. Obviously a virus could be inside a zip file but can the actual zip execute? Reason i ask is i have a website that ...
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2answers
3k views

How can I create ZIP64 file and test it?

I need a zip file (ZIP64) for a test case, I put a bigfile of 5GB full of zeros and zipped it, but I don't know if is ZIP64. Should the ZIP file exceed 4Gb to be ZIP64? A 4Gb file for a test case ...
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2answers
777 views

How do delete *.jpg files from an already existing Archive?

I have at least 40 archive files, 100 MB each, which also includes many .jpg files within. How I can delete the .jpg files from these archives easily? To be more exact, I am looking for a way to ...
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4answers
671 views

How to split zip-file (or rar-file) in many files

I have a huge file I need to send over the Internet and I want to use SkyDrive but it has a 50MB limit per file. How can I zip and split my file in many small (50MB) ones?
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2answers
2k views

Mac zip archives on windows

What is the best way to open zip archives which are made on a Mac? Frequently when I open a zip archive the date file are 0 bytes, while the mac_osx folder is filled with the correct data files. Its ...
2
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2answers
436 views

Recursively zip files into .cbz-files based on folder in command line

I'm trying to figure out how to write a script to automate creating .cbz files from images in folders on OSX. My directory tree will look like this: /toplevel/ cbz/ comics/ Comic1/ ...
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2answers
623 views

Compress Files Directly to xpi

Some unzip tools enable to extract xpi files. I'd be glad to know if there's a program which also enables to compress files directly to xpi. Thank you.
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1answer
5k views

How to zip multiple files into separate archives?

I admit this question was asked here before: Like Zip into separate files where the person who asked didn't specify the OS he used and received no answers. I need to separate a huge directory ...
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2answers
2k views

How to unzip zip archives that have more than 260 symbols in their name?

I have a big zip file (approximately 650 MB) that I want to unzip. I already shortened the name of the zip file to just 1 letter and stored it directly on the C: folder. So I can´t shorten the path ...
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2answers
3k views

unzip and maintain directory structure of archives

On fedora-13, I tried using: unzip -j [nameof.zip] but this doesn't seem to maintain the folder structure of the original archive. I REALLY need to maintain this structure because the archive is a ...
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2answers
3k views

How to zip multiple folders in 7zip?

I have a folder, lets say, MAIN. Inside this folder, there are many folders(say f1,f2,f2...) which has subfolders and files in them. Now I need to zip these folders(f1,f2,f3...) and their contents ...
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2answers
2k views

Windows 7 Explorer Preview Pane for zip files

I was wondering if there is a possibility to add .zip file to the explorer preview pane (Windows 7 64 Bit). For example if a folder contains a .zip file i would like to see the content of the .zip ...
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2answers
4k views

Large zip files content is corrupted when unziped using windows explore

We have a large zip file (25GB) containing mosty pdfs and png files. (about 150000 files) When we unzip the file using windows explore some of the content is corrupted. Some png files shows content ...
2
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1answer
452 views

Where does the process occur when zipping a file on a network mapped drive

I want to copy a number of large files that will compress well from a mapped drive to my local hard drive. Will zipping the files make the overall processing time shorter? What I am thinking is, can ...
2
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3answers
527 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 ...
2
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4answers
236 views

What other archive formats save Date Created and Date Accessed?

7-Zip on Windows will save the Date Created and Date Accessed when compressing a .zip file, however it does not do this for its (referring to 7-Zip) native .7z format. Any Unix-based formats are ...
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1answer
1k views

How to compress only files without their parent directory?

I'm trying to compress files in a directory. Let's assume the directory is "test". when I execute the following command and unzip the file, I get "test" folder and files inside the test folder. zip ...
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2answers
610 views

Create zip files that with given size

My question is same as in Create multiple zip files that are not dependent on each other? but my idea is to add files to zip until it is of required size and continue with a new zip file for others ...
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2answers
4k views

File name: 'winmail.dat' Virus name: 'ExceedinglyInfected'

Everytime I send a zip file off via my corporate account the recipient gets this message back: FILE DELETED The original contents of this file have been replaced with this message because of its ...
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1answer
6k views

Identifiying a zip file that is not really a zip file

I have several files that a 3rd party program generated that have a .zip extension, however neither windows nor 7zip can extract it. In 7zip it does show me the file name of the uncompressed file ...
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1answer
1k views

Zip/gzip compression ratio much less in Linux than in Windows

I have a bunch of very huge files located on a Linux machine that I would like to compress and save some space. I have tried using the tar/gzip combination and I have noticed that the compression ...
2
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1answer
4k views

How to update one file located in a zip subdirectory?

I have a zip archive that contains several folders and I need to update one specific file within such a folder. How can I update the file with a command line? I have already tried 7z u my.zip ...
2
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1answer
5k views

is “unzip” the same as “extract”?

I've downloaded some industry software to my desktop there is a pdf with it that says I should unzip the folder (its a compressed zipped folder). When I night click it I get the option to "extract" ...
2
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3answers
793 views

What kind of window's batch file allows zipping of ftp files?

What commands should I use to transfer a file via FTP and then compress the files in a backup directory with a filename containing the date/time for reference? I'd prefer to use batch scripting. The ...
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2answers
4k views

Using WinRAR to compress a folder stucture

I am trying to zip up the following directory contents: C:\Test\*.* C:\Test\bin\*.* I want to be able to zip up the Test directory and the bin subdirectory, however, I need the Test directory’s ...
2
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1answer
455 views

Zip Multiple Text Files from Multiple Directories into One ZIP File in One Command in Bash

I have an account on AWS and I use S3 for storing data. I have commands that will enable me to zip data files like so: data.zip s3_dir/level-1/level-2/*/*/data.txt But there are, say, 50 or more ...
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2answers
449 views

7 zip archiving directory recursively

I zipped my old windows dir with 7 zip. It zipped the "Application Data" many time (hundreds) as shown here : C:\Windows.old\Application Data\Application Data\Application Data\Application ...
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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?
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5answers
5k views

Automatically unzip/untar downloaded files?

Is there a way to automatically unzip/untar everything I download? Preferably without installing anything (I already have enough programs running all the time) and something that works with all ...
2
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2answers
56 views

How to compress multiple files with similar names?

So I've got some 20 000 files that I want to compress and group by following logic: compress every file that have identical characters up to ( also include files that have no ( So the files are ...
2
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1answer
316 views

Zip files and Volume Shadow Copy

I back a lot of data up using WinRAR and I create a .rar file from these backups. Since I back up about 20GB of data at a time this process takes some time. Sometimes I need to open a few of the ...
2
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2answers
898 views

Powershell Script to Find & Highlight Specific Files Based on Creation Date

I am trying to write a Powershell Script that checks a certain folder for .zip files. The .zip files contain information from certain backups. These .zip files lie within a folder tree for different ...
2
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1answer
2k views

Uncompressing a file despite CRC errors

I have downloaded a multipart ZIP archive. It contains a video file. Unfortunately, IZarc reports a CRC check fail when extracting the archive. Downloading the archive again is a long task, since I ...
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2answers
2k views

How do I configure Google Chrome to open zip files in file-roller instead of Nautilus?

When I download a .zip file using Google Chrome on Linux, upon clicking it the .zip file opens my Downloads folder in Nautilus, not the .zip file in file-roller. Ironically, Google is mum on the ...
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1answer
3k views

How can I batch convert comic ZIP files to PDF?

I have many comics in CBR, CBZ format. I want to convert them to PDFs. I know Jomic can do this, but I am using Windows and Jomic only works on OS X. Is there any way to do that?
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2answers
2k views

Setting WinRAR to exclude files with the exact filename I specify from being extracted from an archive

How can I configure WinRAR to exclude files with the exact filenames: thumbs.db or .DS_Store (ignoring case) from being extracted from an archive (all directory levels within an archive)? Files with ...
2
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3answers
1k views

List files inside ZIP

I've got ~50 zip files, each containing a similar directory structure but with different files inside. Is there a way I can easily dir the contents of those zips? I'm interested in creating a list ...
2
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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 ...
2
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3answers
927 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 ...
2
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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?
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1answer
83 views

How to pass parameters in batch file and zip the file using 7z.exe?

I need to create a batch file as per below requirements 1) pass path1 & path2 while running the batch file exl: testrun.bat E:\ERP\test1.txt E:\ERP\header.txt 2) Need to store these command ...
2
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1answer
447 views

Remove sub directories / sub folder from zip + rar files

I have a bunch of .zip and .rar files. Many of these files contain subfolders in the archive. I want to remove all the folders from the zip files but keep the other content. e.g. original.zip - ...
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2answers
6k views

Unzip file from source to destination within user directory across multiple versions of windows

I have a source zip file which is located in a user's "My Documents" directory. It is guaranteed to always be there. I'm looking for a way to create a batch or script which will let me unzip that file ...
2
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2answers
469 views

Exclude files in a for loop

I want to delete the /lib directory inside apk files. I managed to do this with: for DIR in ~/ABC ~/ABD do cd $DIR for APK in * do if test -f "$APK" then zip -d $APK ...
2
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1answer
379 views

How would Apache or Compressed HTTP react to a zip bomb?

inspired by Compress a 1GB file into 200_MB? and the related comments: Many webservers today use a zipped HTTP Version (Gzip afaik). How would Apache or any other server react to a zip bomb? Since ...