7-Zip is a file compression archiving program

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2
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3answers
753 views

How resilient is the .7z file format?

I'm intended to package up quite a lot of data in to archives so that I can store them using an on-line file storage service and to various local backups - the intention being that this will be fairly ...
2
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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 ...
5
votes
3answers
486 views

Need to archive/encrypt 20GB of files

I have 20GB of creative files (flash/photoshop/illustrator) files that i need to ship to someone. Unfortunately, sending thru the internet isn't possible (proxy on both ends, unreliable connections, ...
2
votes
2answers
1k 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
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4answers
9k 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 ...
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2answers
1k 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?
9
votes
3answers
6k views

7zip: how to extract to std output?

I have 7z 4.65 and am trying to extract a single file to standard output. The 7z command-line help says -so is the command-line parameter to extract to standard output, but when I try this: ...
5
votes
3answers
29k 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 ...
9
votes
3answers
14k views

7-Zip compression on multi-core computers

Does 7-Zip take advantage of multiprocessor or multi-core systems when compressing? For example, would there be a close to 16 times speed-up on a 16 core system assuming no disk or memory ...
1
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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?
15
votes
4answers
24k 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 ...
5
votes
2answers
4k views

Symbolic links and 7zip

I'm trying to compress a folder into a .7z archive. This folder contains symbolic links to some other stuff outside the folder (both directories and files). Apparently 7zip just archives the link ...
1
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2answers
2k views

7zip: Add files to new folder in archive via command line?

I am using 7zip for compressing a bunch of files. The files are in a directory structure, like this: MyDir\File1 MyDir\File2 MyDir\File3 MyDir\MoreFiles\File4 MyDir\MoreFiles\File5 I want to ...
1
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2answers
1k views

How to 7za file without specify archive name

Say have an executable target.exe, is there any way to compress this file into target.zip without specify archive name(output name) by using 7zip command line?
3
votes
2answers
918 views

Context Menu being created if you install 7-Zip or TortoiseSVN in Windows 7 while it works just fine in Windows XP

I've installed 7-Zip in XP and it creates a context-menu in Windows Explorer. But, in Windows 7 it doesn't. I don't know why. I tried it with administrator privileges, but nothing happened.
3
votes
1answer
3k views

Have PowerShell zip the contents of a bunch of folders, individual ZIP file for each folder

I would to have PowerShell zip the contents of a bunch of folders and get an individual ZIP file for each folder. Recently, I asked how to do this with a .bat file and an answer was provided. for /D ...
42
votes
2answers
38k views

7Zip - Command Line : Exclude folder(s) by wildcard pattern?

Any idea how to exclude a wild-carded path(s) from a command-line 7zip command? I'm doing something this: 7z.exe a -t7z archive.7z FolderToArchive\ -mx0 and would like to exclude any \bin\*.* or ...
1
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1answer
1k views

unencrypt 7zip files in ubuntu

I have an encrypted 7zip file, but i cannot open it, it appears that p7zip does not support encryption yet. Do you know a program that can open it ?
17
votes
4answers
56k views

7-Zip and unzipping from command line

I am looking to use the command line 7-Zip to unzip a folder. I have a file, say example.zip and want to unzip the contents of the file into a folder called example. What are the commands I need to ...
8
votes
4answers
13k views

Best Secure Encryption for Zip Files via Linux

I want to use highly secure encryption for zipped files via Linux/Ubuntu using a command line terminal, what is the best command line tool to get this job done? zip -e -P PASSWORD file1 file2 file3 ...
7
votes
8answers
17k views

How to make 7-zip do a whole bunch of folders

I got a bunch of pictures that I had to crop into 800x600 pixels. That was easily done, but now I have to upload them so the family can see them all. Thing is, this is 500MB in pictures. I decided to ...
1
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2answers
1k views

selfextracting archive with 7zip via cmd.exe

I downloaded 7za.exe and did this to compress a file.exe: 7za.rar a -mx9 archive file.exe Now I want to create a selfextracting archive (.exe), so I tried this: 7za.rar a -mx9 -sfx archive ...
2
votes
6answers
2k views

Mounting a .7zip file containing .tar

I have downloaded wikipedia in a compressed form. It is a .7z file, which contains a .tar file. In compressed form it is only 14 GB. If I uncompress it, it has 208 GB in it. And I don't have that much ...
36
votes
3answers
36k views

How can I unzip a .tar.gz in one step (using 7-Zip)?

I am using 7-Zip on Windows XP and whenever I download a .tar.gz file it takes me two steps to completely extract the file(s). I right-click on the example.tar.gz file and choose 7-Zip --> Extract ...
0
votes
1answer
3k views

Unzip a multi-file zip archive in freebsd

I created a multi-file zip archive of some files using 7zip on Windows to allow more easy uploading to my server. I now want to unzip this archive on the server, but I get this error: [user@host ...
0
votes
1answer
6k views

7zip Add Operation Not Supported?

When I try to add a new file to a zipped archive, I get the message "Operation not supported." Anyone know how to fix this?
8
votes
7answers
9k views

7zip doesn't ask me for password for a zip I encrypted while double-clicking it

I just tried to encrypt a folder with 7zip by command line choosing a password but when double-clicking on the zip file, it shows me the files list without asking any password. Any other alternative ...
0
votes
1answer
2k views

PHPMyadmin doesn't seem to be able to read zip files compressed with 7zip

Each time I get this when trying to import: Error in ZIP archive: CRC32 checksum is not equal with the value in header information. Which software should I use for phpmyadmin then ?
22
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5answers
14k views

How can I open a .7z file in Ubuntu?

How can I open a .7z file in Ubuntu?
3
votes
3answers
2k views

How to add a root folder to files archived with 7zip

I want to create a distribution archive of my code that includes a subset of directories and excludes all the subversion files. I would like the files to be added to the archive with a root folder ...
3
votes
2answers
4k views

Extracting .exe executables and back again using 7-Zip?

I figured out, by accident, that I can extract .exe executables (what for?). Though the files make no sense whatsoever, how do I put those extracted files back into an .exe executable?
4
votes
4answers
3k views

Can I open a Disk2vhd created VHD file with 7-zip?

I've created a VHD file of my C: drive, for backup purposes, using Disk2vhd 1.0. When I try opening the file using 7-Zip 4.65 (to view the contents) I get the error: "Can not open the file XXX as an ...
0
votes
2answers
1k views

7-zip command line escaping

Is it possible to escape characters from the source file or archive when using 7-zip's command line interface. For example: 7z a "My%Archive.zip" "My%File.txt" -mx9 This command line fails at both ...
14
votes
2answers
23k views

Is it possible to execute a file after extraction from a 7-Zip self-extracting archive (SFX) archive?

I'm try to make a compressed deploy-able application. Currently I'm taking a set of files that I've published from my IDE (Visual Studio 2008 - WPF published application) and compressing ...
4
votes
1answer
4k views

How do I setup Task Scheduler in Windows 7 to compress a folder using 7-Zip File Manager?

I would like to get 7-Zip Manager to zip my wwwroot folder on a weekly basis. Is it possible to automate this with Windows 7 Task Scheduler, and if so, what are the exact steps to do this?
1
vote
3answers
2k views

programmatically extract tar.gz in a single step (on windows with 7zip)

PROBLEM: I would like to be able to extract tar.gz files in a single step. This makes my question almost identical to this one: stackoverflow question for tar-gz. My question is almost the same, but ...
9
votes
7answers
2k views

7-zip for linux

7-zip for linux, does such a thing exist? I mean actually 7-zip or a port, not another compression tool or command
30
votes
6answers
39k views

How do I use 7-zip to backup files, but exclude some directories

I would like to use 7-zip to backup a directory, but I would like it to exclude all directories named ".svn" (anywhere in the source tree). Does anybody know if this is possible and in that case how?
8
votes
8answers
20k views

How do I reassemble a zip file that has been emailed in multiple parts?

I received 3 emails each containing part of a zip file. The extensions end in .z00, .z01 and .z02. (Emailed as such to get around the typical 10Mb attachment limit per email.) I have put all 3 files ...
10
votes
5answers
6k views

Is there a way of replacing those ghastly 7-Zip default icons?

I like 7-Zip a lot - it's my compression utility of choice on Vista and XP. I have just one problem with it: it's butt ugly. I'm really kind of reluctant to install it on my fresh Windows 7 system ...
10
votes
8answers
10k views

Why doesn't ZIP Compression compress anything?

A 398MB directory was only compressed to 393MB using 7Z and Normal ZIP compression. Is this normal? If so, why do people continue to use ZIP on Windows?