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

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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
270 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
88 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 ...
2
votes
1answer
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
305 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
3k 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
393 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 ...
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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 ...
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1answer
243 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 ...
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1answer
644 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. ...
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1answer
6k 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' ...
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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
votes
0answers
213 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 ...
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2answers
326 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
146 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
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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? ...
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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
134 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 ...
0
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1answer
300 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 ...
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5answers
2k 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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3answers
26k 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 ...
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3answers
24k 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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4answers
6k 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.
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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 ...
0
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1answer
176 views

truncate absolute path in archive

In my script, I call the zip-command with the full path of the archive and the target directory like so: zip -r /srv/www/htdocs/xxx/system/tmp/build/tmp_build.zip ...
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3answers
147 views

Zip a folder on a daily basis (mac)

I have an online backup utility (zipcloud.com) And i scheduled an upload of projects folder every day at 12pm. Thing is my projects folder contains a lot of files so i thought the best I could do is ...
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votes
2answers
1k views

powershell cmd script of out-zip.ps1

i have found this powershell script online and i would like to run this from a batchfile. Can anyone give me the correct syntax for this script. And if possible make it possible to input multiple ...
2
votes
2answers
401 views

Explorer.exe high CPU - accessing zips on a network share

Every so often I seem to get very high CPU usage from explorer.exe. I'll be working happily for a while, then suddenly my PC grinds to a halt. I used Procmon.exe to see what was going on, and what I ...
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2answers
135 views

Any windows program to view zip content on mouse hover?

Is there any windows programs which would show me the file and folder names of zip and rar archives when I place my cursor over the file? I always have to open them to decide if I should extract them ...
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1answer
4k 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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votes
5answers
11k views

Reduce .wav file size

I am required by a distance education language course to record some audio and submit it. However, they are being absolutely unreasonable. I am only allowed to attach a file that is 5mb while my ...
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3answers
3k views

How can I open a .alx or .cod or .prc or .sis file on a computer?

I found a .zip file of something, and I downloaded it. Inside it were only a .alx and a .cod file (presumably of the same thing). I don't have a Blackberry. Is there a way to open one of the two of ...
2
votes
2answers
81 views

Windows 7 - open with option for a file in opened compressed file

I'm not sure if this is possible or not but if it was it would make my life allot easier. What I want to do is get the "open with" option to open and make edits to a file in a .zip file without ...
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1answer
795 views

Auto Zip folders to RAR files

Essentially I host all my music on an FTP so friends and family can access it with ease, and I can access it from abroad etc. But the only issue is that each track needs to be downloaded manually. I ...
0
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1answer
147 views

Looking for a gtk equivalent of ark

Does there exist a GTK equivalent (or improvement) of the Linux archiving tool known as Ark? If so, where might it be found; and if not, how well-received might be a new project which acts as a ...
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1answer
110 views

Batch Script for backup

I need a batch script that will zip up all files in a particular directory and save it to another directory in a YYYY/MM/DD-HH/MM/SS format. I've seen things similar but not sure about this. Thanks! ...
0
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0answers
124 views

zip how to include files with a dollar sign in the name

Oracle Solaris 10 9/10 SPARC I'm trying to archive and compress a large directory using zip zip dir dir in this directory are some files with a dollarsign like name$whatever. Zip skips those files ...
0
votes
1answer
434 views

How to Unzip files recursively in Linux / DOS

I have a zipped folder which contains thousands of zipped folders contained in itself and that goes down the hierarchy, I have to unzip each and every file and place it in a single folder. This task ...
2
votes
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 ...
9
votes
2answers
49k 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 ...
2
votes
1answer
852 views

Create .zip's on OS X without the “extra” MacOS files (like .DS_Store, MACOSX folder, etc) [duplicate]

Possible Duplicate: Compressing folders on a mac, without the .DS_Store OS X includes undesired, "extra" files when creating .zip's of folders that look poor in Windows & Linux. How to ...
3
votes
3answers
2k 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 ...
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1answer
857 views

Unzipping archives, preserving folder hierarchy

I've got a problem and am not sure what it is, but hope someone can help me think this through because this has me stumped. Backstory: I wrote a Java app (Android) that unzips some zip files ...
0
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1answer
560 views

What free tool can be used to password-protect .pdf files without displaying password during entry?

What is a "good" tool to encrypt (password protect) .pdf files? (without being required to buy additional software; the protection can be created under linux but the password query should work on ...
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2answers
111 views

Updating an Uploaded Zip File without re-uploading the whole files

Imagine I have uploaded a zip file which contains thousands of images and its size is about 2GB. Now I want to add 100 new pictures which their size is about 10MB. The only way I can imagine is that I ...
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1answer
1k views

How to zip folder and upload to Dropbox?

I would like to zip a folder and upload to my dropbox from Ubuntu shell. I intend to use this as a backup solution, so it would also be nice to run everyday and replace the older file.. If dropbox ...
0
votes
3answers
485 views

detect content from zip file without uncompress it

I'm trying to check a lot of zip files to make sure it contains the right directories. what I've done is looping all the zip files then use unzip to uncompress and check it one by one.But the CPU and ...
0
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1answer
3k 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 ...