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

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1answer
86 views

intercept zip file download request to view contents?

user 'A' downloads a zip file from a web server via HTTP/HTTPS, and after downloading he immediately deletes that zip file from server. In this scenario,can user 'B' (not having direct access to ...
21
votes
4answers
4k views

Can Double Zipping Cause Problems?

I have a directory that I have been storing a ton of files in. Among the 10ish types of files there are also .zips of other directories. In my personal experience I vaguely remember issues when ...
34
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5answers
5k 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?
-1
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2answers
197 views

Make a zip file, from string

I am downloading a zip file from the internet and I get it as a plain text string. I now want to save this to the disk, but how should I convert this text string to a file buffer? What is needed to be ...
3
votes
0answers
47 views

Compressed file with a header containing all files within it, at the beginning of the file

I have noticed that most files resulting from a compression / archive process do not have a list of the files contained at the beginning of the resulting file, but rather at the end of it. For ...
1
vote
1answer
60 views

How to unzip selected files of a zip file in Mac

I have some very large zip files contains thousands of files. I only need to unzip one or two files within it. In Windows, this can be easily done with most common programs like WinRAR or WinZIP. But ...
10
votes
2answers
64k views

How to crack a password protected zip file

I recently downloaded a piece of software that came in a .ZIP archive, but the .EXE software inside of the archive had a password on it. The website that I would have gotten the password from closed ...
3
votes
1answer
86 views

Is there any solution/utilities to compress and upload a large file simultenously?

Upload a large file via broadband connection takes time. Compress the file using max. compression ratio before upload also consume time. Is there any solution that may compress and upload file to ...
2
votes
1answer
75 views

ZIP will not extract all files on Debian

My machine runs Debian 6.0.7 and I have Zip 3.0 (July 5th 2008), by Info-ZIP. When I try to unzip a .zip file, 2~3 times out of 10 it would not extract everything. There would be 2-3 files missing. ...
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votes
2answers
601 views

How can I achieve the maximum zip compression? [closed]

I would like to make a "standard" zip file which contain .jpg images. Which software and switches / options should I use to achieve the maximum compression ratio? I mean maybe I can make a solid ...
3
votes
4answers
443 views

Why does zipping a zipped file not reduce its size?

Based on the idea that a zipped file is a new binary file, why can't I reduce a Zip's size by zipping it again and again – up to a very small resulting file?
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votes
3answers
20k views

How do I create separate zip files for each selected file/directory in 7zip?

This is the internal zip packer from Total Commander: However I want to use my 7zip packer. When I select 5 files, I get 5 separate .zip archives for each selected file. How do I do that in 7zip?
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1answer
1k views

Recursively process zip archives to extract files while discarding specific format of files

On my Windows 7 machine, I have a directory full of downloaded dumps in ZIP archives. Each archive contains few text files, PDFs and rarely XML files. I want to extract all the contents of each ZIP ...
2
votes
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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votes
2answers
47 views

Calculations for groups of data

I have 3 columns of data in an excel sheet. The first column represents zip codes, the second represents values in that zip code and the third column represents the frequency of that value in the zip ...
2
votes
3answers
2k views

Windows command line ZIP extraction with checksum or similar?

What I need to do, at the command line, is: Extract the contents of a a ZIP archive. Change an arbitrary number of the extracted files. Repeat step 1, but because it is a huge archive, only extract ...
0
votes
0answers
24 views

Why would my zipped file be the same size as the uncompressed files? [duplicate]

I am trying to zip 13 mp4s. The uncompressed versions of those files are 2.69GB. But when I zip them with 7zip, using Ultra compression level and any of the compression methods - including LZMA, the ...
1
vote
2answers
352 views

Error when trying to extract files from a zip file

When I try to extract files and opening the zip itself I get this error: ! C:\Users\Loko\Downloads\Textbook_1.zip: Unexpected end of archive Some people say redownloading is the only fix but it ...
0
votes
2answers
108 views

How to use Linux zip to sync files

I want to "sync" my files to the zip, creating any new ones, updating any new ones, and the deleting ones from the zip that no longer exist. When I used -du, I see zip error: Invalid command ...
0
votes
1answer
54 views

Should I extract before running?

Is it not wise to run an executable from a zipped file without extracting first? Someone explained to me that there is no need to extract first. He explained that zipped files are nothing more than ...
3
votes
2answers
397 views

Specific password recovery [closed]

I have a zip folder which I saved and password protected. I forgot the password but I know that the password is something like : BlueMonday!2012 or bluemonday2012 I know I can brute force the file ...
0
votes
0answers
60 views

Fast way to forward an Outlook email as a zip

I need to find a quick way to select an email in Outlook 2010 and forward the email as a zip attachment. The recipient will always be the same. The subject and body of the email will always be the ...
0
votes
1answer
894 views

How to compress a large file to many smaller zip files with defined size?

I have a very large file, e.g. 100GB, and I want to compress it to many smaller zip file, with each file cannot larger than 1GB, what would be the most suitable commands to do it? remark: I want to ...
0
votes
1answer
30 views

How do I unpack .zip via FTP on Windows 8

I uploaded this .zip file using FTPRush to some FTP, now I need it to unpack, but can't figure out how. On FTPRush there's this command prompt when you click CTRL+R it's titled Send Raw Command to ...
5
votes
1answer
796 views

Change Excel Zip Compression Level in Windows

Excel compresses its files using Zip-Deflate and stores it. However, the compression level is far from the best. To reduce the size and send it across I have to unzip and re-zip it manually everytime. ...
12
votes
4answers
11k views

Is there a way to edit files inside of a zip file without explicitly extracting them first?

I sometimes need to make changes to a .zip or .jar file, so I usually move the file to /tmp, extract all the files with unzip, edit a few files, and then re-zip up the files. This works, but it can ...
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vote
1answer
1k views

Fix corrupted Unicode file names in a zip archive

A colleague gave me a zip archive of some data I need to analyse, but unfortunately the filenames have been corrupted somewhere along the way, either when creating the archive or when extracting them ...
0
votes
1answer
371 views

Extract specific folder from a tar.gz

I know this question was previously asked on this site before like here 1 and here 2 but no success for me. I want to extract the Measures folder from my S012011_csv.tar.gz zipped file. If I do tar ...
0
votes
0answers
256 views

Windows 7 ZIP folders not extracting

I am helping a client who has a problem with Windows zip folders. For any zip folder, he can open the folder and see the contents, but if he does a copy and paste to a different location nothing ...
4
votes
2answers
10k views

Is there a simple, automated way to convert a large number of files between ZIP and RAR formats?

I have about 500 RAR archive files and 300 ZIP files that I want to burn to a DVD and give to someone else. I would like these 800 different archives to be in the same file format, so either 800 ZIP ...
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vote
2answers
6k views

Opening a password protected zip file in Windows XP

My friend wants to send me an encrypted zip file that he created using $ zip -e file.zip file2.zip Will I be able to open that with the native Windows XP pk zip implementation?
0
votes
1answer
46 views

Move data with compression

I'm using win 7.I have disk ~2Tb which one I want to format so I need to move data from it to other disk, but the problem is that I have not another 2Tb disk and I think I can compress data(on the ...
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votes
6answers
5k views

Zip files without compression

I'd like to bundle a number of big files into a single file, to make them easier to share. The files are already compressed (eg. jpeg, video etc), so I don't need compression, only archiving. How can ...
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votes
7answers
17k views

How can I create a zip / tgz in Linux such that Windows has proper filenames?

Currently, tar -zcf arch.tgz files/* encodes filenames in UTF, so Windows users see all characters spoiled in filenames which are not english, and can do nothing with it. zip -qq -r arch.zip files/* ...
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3answers
6k views

Batch file to ZIP only files in directory or sub directory

I wanted to know if possible how to create a command line to do the following - if a directory exist ZIP only the contents into a ZIP file. If a directory has sub-directories ZIP only the contents ...
2
votes
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 ...
4
votes
4answers
17k views

How to extract ZIP from self-extracting exe?

Well, the subject says it all. I have an exe that is an SFX, and I want to extract the ZIP from the SFX. How can I do that?
0
votes
1answer
182 views

Command line - Some questions

I've created a batch file for zipping selected items in a folder. (The file is placed in 'Send to'). If I use the following code: for %%* in (.) do set CurrentFolder=%%~n* "C:\Program ...
4
votes
3answers
2k views

Is it feasible to crack ZIP passwords?

I have a piece of software I have to install on company laptops. The installer needs a serial to work properly, but I don't have it (my manager isn't here so I can't ask him). The installer tells me ...
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0answers
113 views

repeat command until process start or timeout unix

Is there anyway to check the number of file in a directory, if the number of files is correct, say 5 files, zip the files with zip -r total.zip. If the number of files is wrong, wait 3 seconds, and ...
12
votes
3answers
45k 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?
0
votes
1answer
30 views

Browse archived website

I have html/webpage files stored in a folder locally on my machine. I can view this content just fine using any browser. However, long term, I would prefer to have the contents stored inside of some ...
3
votes
3answers
5k views

unzip how to trim top directories

I have a zip archive. The unzip -l myarchive.zip command gives this listing: top/subtop/files/1.txt top/subtop/files2/2.txt etc The root folders are top/subtop for all files. How to extract those ...
1
vote
1answer
1k views

Creating a zip file with a timestamp

I have been trying to create a script which compresses a directory with a timestamp and move it to another location on the same server, but I cant seem to get TESTDATE to display on the zip file, ...
10
votes
6answers
19k 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 ...
0
votes
1answer
769 views

How to add “extract here” or “p7zip” menu item? (Gnome3, Nemo)

I'm using Fedora 20 with Gnome3 and Nemo. I installed p7zip but I don't see a p7zip or "extract here" item when right-clicking on a .zip What can I do?
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0answers
31 views

While compressing the folder many other zip files creating during the process

I seen a strange thing never seen before while compressing the folder into the zip. When I start zipping my folder there are many zip files showing automatically during the process. Like say the ...
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2answers
119 views

ZSH browse content of zip file

Is there any way or plugin for zsh where I can browse content of zip files in place instead of unzipping zip file and than making zip again? I want to achieve same behavior as in Midnight Commander ...
1
vote
1answer
328 views

How do i unzip files from a nested folder?

Say i have the following .zip file: ZipFile.zip /zipfolder/ this.file that.file theother.file When i try: unzip ~/path/to/my/ZipFile.zip -d ~/path/to/my/destination/ ...
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vote
1answer
127 views

What are the default programs to open docx, PDF and ZIP files on OS X?

I'm writing an article about DOCX, PDF and ZIP extensions. But first, I need to know the programs which are used to open these extension as default (without any third-party applications). I don't ...