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

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145 views

Zip, tar: is there a file table

Is there a file table, or inode structure (like in filesystems) of a zip or tar file?
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4answers
5k views

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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2answers
3k 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 ...
4
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0answers
416 views

Fix encoding of German umlauts in directories and filenames (ü = u╠ê and so on)

I have many zip-files where there are encoding errors for the German umlauts (äüöÄÜÖß). They show up in both the filename.zip as well as in the included directories and files like this: Fünf = ...
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2answers
1k views

Is SecureZip compatible with any other ZIP programs?

I put some files into an encrypted archive with Secure Zip (was using a computer at another organization) and emailed them to some people. None of them have Secure Zip (nor do I on any of my own ...
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3answers
3k views

Installing setuptools for python 2.7.3 on SL6 returns an error that I don't have zlib. But I do

I have a machine running Scientific Linux 6 It comes with Python 2.6 by default I've also installed Python 2.7.3 because I need to run some modules which only work with newest versions. This is ...
0
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1answer
128 views

Merging 2 zip files

I have 2 zip files: file1.zip file2.zip I want to compare the two zip files and then only extract the files missing in file2.zip (directory structure intact) so that I can merge them in. ...
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5answers
2k views

How can I test all zip files in a folder to verify if they are corrupted or not?

There was a utility a long time ago called CFAtest that was doing this quite nicely, but it has disappeared. Basically, I am looking for a similar tool (preferably graphical) that will traverse a ...
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1answer
71 views

Specify directory within zip file when growing archive

I have a file at /tmp/mylib.jar which I would like to put into the lib directory contained in myarchive.zip. I know I can use the -g option to grow the archive, but I'm not sure how to specify the ...
0
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1answer
174 views

Multiple folders on server, create zip file for each

I have a large number of folders on a server that I need to zip. Each folder will be zipped to a separate zip file. Zip file name = folder name. After zip is created, delete folder. Can I do ...
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2answers
3k views

Equivalent to tar's “--strip-components=1” in unzip?

I have a script that extracts a tar.gz-file to a speificed subdirectory mysubfolder: mkdir mysubfolder; tar --extract --file=sourcefile.tar.gz --strip-components=1 --directory=mysubfolder; Is there ...
0
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1answer
582 views

Windows folder has readonly attribute that cannot be removed

I have a zip file containing Eclipse workspace. When I unzip it all the extracted folders have read only attribute set to true. When I uncheck "read only" in properties dialog and click apply the ...
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2answers
602 views

How do I batch decompress so that each file unzips to separate folder?

Does anyone know how to unzip a highlighted list, so they unzip to folders of file name (under Windows)?
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2answers
838 views

How to extract and erase the original compressed file on Windows 7?

I wonder whether there is an extractor tool that as well as extract the file contents, erase the original compressed file. Thank you.
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1answer
174 views

Convert 1 zip file into multiple via SSH

i have 1 zip file in my FTP with 10GB i must convert it into multiple zip files, for example 10 zip files with 1GB each. how can i do this via SSH? thx =)
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1answer
2k views

'zip' is not recognized as an internal or external command, operable program or batch file

I am trying the zip functionality on the windows host through command prompt. When I am running the command zip -r folder.zip folder it gives me error msg 'zip' is not recognized as an internal or ...
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1answer
8k views

How to open vmdk files in VMware? [closed]

I have lots of .vmdk files: blabla-s001.vmdk blabla-s002.vmdk blabla-s003.vmdk How do I open them with VMware?
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1answer
2k views

Is there a limit to compressed file size on Win XP?

I just compressed 11.6GB of data on my hard drive into a 4GB zip file using Windows XP Compressed Folders, and deleted the original data. I then found that the 4GB zip file is corrupt. Is this simply ...
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2answers
6k views

Compress files from OS X terminal?

In the Finder, there is this wonderful ability to right click on a file or directory, select compress from the drop-down, and end up with a zipped file. Is it possible to do the same thing from the ...
3
votes
2answers
15k views

Windows zip error: Windows cannot complete the extraction. The destination file could not be created

I have a strange error in Windows 7 when I want to execute/open a file inside ZIP archive. I have two files: File1.dwg File2.dwg The archive is not corrupted ( I checked with 7zip utility ) ...
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votes
1answer
85 views

Why don't mp3 files use better compression techniques? [closed]

For instance, an mp3 can be losslessly compressed with 7zip to about 25% of its original size. I compressed an album and the whole thing is a 1/4 of the size. Each song is about a 1/4 of the size (a ...
0
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1answer
1k views

Unpacking windows PKZIP self extractable in linux

I use Linux, and I want unpack a file that is daily released by an external entity in an self-extractable zip format for windows. If I would do this only once, that would be ok for me to find a ...
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2answers
126 views

Maintain zip file structure

I have a directory main_folder first_folder second_folder empty.txt another_folder another_empty.txt I want to zip second_folder, and I'm in main_folder, so I zipped with ...
3
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3answers
77 views

Zip file structure in Linux

I have a file in folder/football.jpg that I want to zip. So I zip with the command zip folder/football_zip folder/football.jpg It works, except that the Zip file contains the folder folder, which ...
1
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1answer
12k views

How can I extract a password-protected file a zip archive?

I have a zip archive with several files. Zip can password protect individual files (not just the whole archive) and I have such a protection on one file. How can I extract this file if I no longer ...
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3answers
2k views

Is there a command to determine the compression ratio of a tar.bz2 file?

I have a file.tar.bz2 that's about 50GB and would like to extract it however I don't know how much space I will need. Is there a command to print the compression ratio of the tar.bz2 file?
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1answer
58 views

Does dragging and dropping an audio file from a zip archive give the same result as extracting it?

I have been downloading podcasts and audiobooks from the Internet. Some sites put them in zip files, often including the _MACOSX files. The files are in mp3 and m4b formats and if I drag and drop them ...
0
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1answer
313 views

Would knowing the file names of password protected ZIP/RAR assist in cracking?

So I have a couple of password protected rars and zips (don't worry, this is for educational reasons only). I know the exact names of the files in those rars and zips. Dictionary attacking the files ...
0
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1answer
98 views

7Zip add string to zip name

I have a 7zip command line process that zips by date and its works well. The command creates a zip file with date IE 20121019.zip. However Id like to add a string to the file name. for example ...
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2answers
2k views

How do I add files from a directory to a .zip-File using the 7zip command line?

I am using the 7zip command line to zip-up files. How can I add all files and subdirectorys from a folder to a zip file (.jar archive file)? I used: 7zip.exe a -t7z file.zip C:\folder Thank you.
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1answer
340 views

7-Zip: Create a zip file from a subdirectory, with the same name as the subdirectory itself

I have a unique situation where I need the following folder structure (Windows) X:\LOGS\PRIMARY\YEARMONTHDAY e.g., X:\LOGS\HS\20121010 Folders are created every morning. Essentially I'd like to ...
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4answers
4k views

Why do large zip files become corrupted so often after downloading?

It seems that when I use a web browser to download a large zip file (2-4gb), I go to unzip it and viola, corrupted. This happens so often. Are browsers not reliable means to download a file (http) ? ...
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2answers
590 views

Change filename in zip

Currently I'm doing the following command in PHP exec("zip -j -P pass $zipname $filename"); The thing is the $filename is something like oawigufh.tmp is there any way to have the file in the ...
4
votes
2answers
4k views

In Mac OS X, how can I edit a jar file without unzipping?

How can I edit the content of a jar file without unzipping its content in Mac OS X? 7z client allows this on windows but I could not find a similar way to do this on Max OSX. By editing i really ...
0
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1answer
400 views

Create a zip file that doesn't create a folder when opened, Mac OS X

I am wondering if there is any way of easily creating a zip file that contains a bunch of files. However, when I double-click to open this zip file, I do not want it to create a subdirectory with the ...
0
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1answer
916 views

General Compressibility Of Various File Formats [closed]

Has anyone come across list of which file formats generally compress well (in general algorithms)? Generally, text files .txt compress well, and media-files (.mp3, .avi, etc) do not compress well. ...
2
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2answers
8k views

Error while zipping files with unicode characters in names with Win7's “send to > compressed (zipped) folder”

When I try to zip files containing unicode characters in their names, such as © or ™, I get the following error: [Window Title] Compressed (zipped) Folders Error [Content] 'C:\Asd™.txt' ...
2
votes
2answers
2k 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 ...
0
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0answers
239 views

Is it possible to recover partial compressed files?

Of the most popular compression methods (7z, RAR, Zip, GZip) is there any of them that allows to retrieve the uncompressed data from a partial file? Imagine there is only one compressed file, and it ...
32
votes
9answers
5k views

How to uncompress a 9GB file in Windows FAT32

I have a 2GB RAR file that contains a 9GB video file. I'm using a FAT32 file system. Now I want to unzip that file but after 4GB I get an error due to the FAT32 file size limit. Now I want to know ...
2
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2answers
447 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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2answers
187 views

How to change zip file from using Internet Explorer as default opening program back to original zip file

I recently had ROMs for a Gameboy Advance emulator that were zip files, and I accidentally changed them to Internet Explorer files. Now, I can't figure out how to change them back to zip files. How ...
2
votes
3answers
2k 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? ...
0
votes
1answer
2k views

How to Zip/Compress multiple folders individually in a directory using Unix?

How to Zip/Compress multiple folders individually in a directory using Unix? for example in a X: directive I have a, b, c etc..folders I have to zip them as a.zip, b.zip, and c.zip. even I dont know ...
0
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1answer
149 views

Winzip error / timestamp in file name related?

I receive an error when attempting to use winzip to extract a .zip file. The filename contains a colon character (used in the timestamp). Is this something that winzip does not handle? Also, the ...
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1answer
403 views

Avoid unwanted path in Zip file in makefile

I want to create an archive for a given folder but without the folders name in the path... In fact I want to do the same thing that this post : Avoid unwanted path in Zip file BUT I'm in a makefile ...
34
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5answers
3k views

Why is a 7zipped file larger than the raw file? [duplicate]

Possible Duplicate: Why doesn't ZIP Compression compress anything? I tried 7zipping an .exe file but it actually became larger. Is this the expected result?
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4answers
33k views

“The compressed (zip) folder is invalid or corrupted” error after downloading zip file - sometimes, but not always

I have a zip archive of ~250Mb located on an Apache HTTP server. Several users have complained of a "corrupt zip folder" after downloading the file directly from the website (albeit the site is built ...
32
votes
5answers
38k views

Read the contents of a zipped file without extraction?

How can I see the contents of a particular file in an archive without extracting the .zip it is contained within? I'm using the Linux command line.
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3answers
7k views

How do I unzip a .zip file on a Chromebook

I downloaded a zip file on my Chromebook. I see the file when I got to "chrome://files". How do I unzip it? Clicking on it merely lets me view its contents.