7-Zip is an open source file compression and archiving application

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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 ...
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4answers
123k views

How to split large file on Windows?

Is there a tool to split large text file (9Gb) into smaller files so that I can open it and look through? Anything usable from command line that comes with Windows (XP)? Or what's the best way to ...
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1answer
556 views

How do I zip a folder with 7-zip but not subfolders of that folder?

For instance, if I wanted to zip everything in My Documents, but not subfolders in My Documents, and I also did not know the name of each subfolder.
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7 zip extract recursively

I have several folders, and within each folder, there are zip files. I want to run a command line order to recursively go through every folder and extract in place every archived file that it finds, ...
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How do I create seperate 7z files from each selected directory with 7zip command line?

FOR %i IN (*.*) DO 7z.exe a "%~ni.7z" "%i" Does the job for each selected file. However I've got tons of directories (with files inside them obviously) I need to pack. Say I have d:\dir1, d:\dir2, ...
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What does combining compression methods in 7z actually do?

The 7z command-line tool lets you specify multiple compression methods, e.g.: # 7-zip archive type, strongest (9) compression, methods PPMd, BCJ2, LZMA2 $ 7z a -t7z -mx=9 -m0=PPMd -m1=BCJ2 -m2=LZMA2 ...
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2answers
336 views

bat file behaves differently when run from windows scheduler

I have a .bat file S:\BACKUP_db\copytofileserver.bat, which takes some files and zip them to the network drive. Its first command is to delete the old backup at specific network path, then pack the ...
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1k views

7-Zip: Unsupported Compression Method while trying to extract a zipx file that consists of JPEGs

A zipx file I received consists of .csv files and .jpeg files. I used 7-zip to extract them. While the .csv files were sucessfully extracted, the JPEG files didn't. The error was something like this ...
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62 views

What switches can be used to install 7zip?

I'm looking for a comprehensive list of switches 7zip will accept when installing. The 7zip FAQ only seems to list silent switches: How can I install 7-Zip in silent mode? For exe installer: ...
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1answer
53 views

Compress / Zip a folder periodically but use minimal CPU?

Similar to this question except, I need it to run with minimal CPU on the background? Also, if there's a 7zip solution that will be nice.
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If I compress a file in a .7z archive with password, is it undecryptable without password?

I'm just curious to know whether or not an encrypted file is really save in terms of decrypting if I compress (or just save) a file into a .7z archive with a password. If I use a strong and ...
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Have a self extract archive extract to specific folder

How can I create a self extracting archive that will extract the contents into a specific folder? Any program or method is acceptable on windows.
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1answer
99 views

What 7zip settings to compress very large partition image?

I have 77 GB big partition backup image in single file and I'd like to compress it quickly. It should compress very well even on worst settings, but choosing GZIP with "Fastest" setting takes about ~1 ...
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1answer
144 views

Can decompress RAR files with 7z.exe command line?

Can extract RAR files from the terminal with 7z.exe? Thanks! This lines doesn´t works on a Extract.bat file. 7z.exe X Xbox.rar -o
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1answer
99 views

How to unzip a zip file to a folder but avoid duplicate folders?

I think you all know that: you're getting a zip file and you don't know whether it contains all files in a folder or only the files. In order to not get a messed up directory, I never use "Extract ...
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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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3answers
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How to disable the output of 7-Zip?

I use 7-Zip to compress files inside a batch file like this: ...\right_path\7z a output_file_name.zip file_to_be_compressed I got the following output: 7-Zip 4.65 Copyright (c) 1999-2009 Igor ...
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2answers
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Create 7-Zip SFX executable

I'm playing around with 7-Zip to create a self-extracting archive (SFX) executable. I followed the documentation, but I wasn't able to get any close. I'm using the 7-Zip 32 bit and the 7-Zip extra 32 ...
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2answers
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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?
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1answer
2k views

Unpack NSIS executable

I am trying to decompress a NSIS executable. With the GUI version of 7zip I am able to do this and the exe is listed as: Type = Nsis Method = LZMA:25 Solid = + With the command line version 7za I ...
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Possible to make a switchless install from a password protected archive?

I am using 7-zip to make a switchless install (method for doing so here and here). I would like to use a password protected archive to make said install to help prevent the average user from simply ...
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2answers
272 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 ...
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4answers
5k views

How to search the content of archives (7z)?

I am looking for a way to search the content of files inside of 7z archive without having to unpack the archive. I have many 7z archives with code inside them and I'd like to search them. Is there a ...
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4answers
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What is the reason for 7-zip / WinRAR to first unzip files to “temp” and then move them to destination?

What is the reason for 7-zip / WinRAR to first unzip files to "temp" and then move them to destination? I do not see any advantage against just directly unzipping to destination. It is really ...
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3answers
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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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2answers
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Creating .xz with 7-Zip, claims insufficient memory (not true)

In WinXP 32bit with a Core i5 (dual core) and 4GB RAM, I'm trying to create an .xz archive from a 266MB log file using 7-Zip (GUI) on the "ultra" compression level (method: LZMA2, dictionary size: ...
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1answer
981 views

7z in batch file with variables “Incorrect command line”

I'm trying to run the following batch file: set HH=%time:~0,2% set HH=%HH: =0% IF %time:~0,2% GTR 5 ( IF %time:~0,2% LSS 21 ( FOR /F "TOKENS=1 DELIMS=:" %%A IN ('TIME/T') DO SET HH=%%A XCOPY ...
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2answers
285 views

How to open corrupted 7z password protected file

I have encrypted a file using 7-Zip. When I try to open it, it is giving an error message of Cannot open file "<File/Directory location>" as archive I have saved my password and password is ...
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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 ...
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Is it possible to make 7-Zip also extract all the other files when double clicking an exe?

With Winrar, when I double click an exe file in an archive, it also extracts all the other files in the archive, which is really handy for when the program depends on the other included files. I want ...
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1answer
726 views

How to compress 14 GB of csv files with 7zip (minimizing space)?

I have to compress 14 GB of csv files with 7zip. What options should I use to achieve the highest compression? I have tried Ultra Level with both LZMA and PPMd compression method, obtaining results ...
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1answer
98 views

7-zip -v switch will fail to use cpu properly?

I have been using this script for years, back from when above 2 cores was a challenge in 7z and I had just offered myself a shiny i7: "C:\Program Files\7-Zip\7z.exe" u -m5=lzma2 -mmt=8 %1.7z %1 ...
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1answer
49 views

Increase number of items in 7Zip Extract to menu

I was curious on how to expand the number of recent items in 7Zip's "Extract files..." menu to include more recent items in the "Extract to" field. Right now, the "Extract to" field only remembers the ...
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1answer
38 views

Extracted files not recognized

I extracted a tar.gz file with 7-Zip. It worked fine, all the files and folders are now visible and have names, different size and so on, yet I cannot open them. And the icons are all the same - a ...
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Sequential Compression of [Text] Files (7zip and Windows)

This is with Windows 7. I have an iterative process, and on each iteration it produces a text file. What I want to do is compress this text file on each iteration to an archive. I'm using vb.net and ...
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2answers
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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 ...
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Multithreaded support in 7za

(I posted this first on serverfault, but then I realized it probably belongs here.) I'm trying compress a very large text file using 7za (p7zip) 9.20. The -mmt option doesn't seem to have any effect. ...
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1answer
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7z a folder in chunks of 100MB and decompress

I am trying to 7z a folder (in chunks of 100MB) and add it to archive in Linux. Is the following command correct? tar cf - dir/ | 7z a -v100m -si dir.tar.7z How can I decompress the folder? I have ...
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What are the best options to use when compressing files using 7 Zip?

I often have to gather log files and upload them to a central server (Owned by another company). The central server has a size limit of the file, so I am trying to create the smallest file possible ...
0
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1answer
106 views

Cannot unzip with zip command line

I am having difficult unpacking a zip to a specific directory. I am trying to get all contents of subdirectory of the zipped file and not the parent directory. This is parent directory within zip ...
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2answers
2k views

How to recursively extract all .tar and .tgz file zipped in a .tgz file using 7zip command line version

I'm using 7zip cmd line version in my app (written in Python on Win 7 box) to extract .tgz files. Although I'm using the -r switch, the .tar and .tgz subdirectories are not extracted. Can someone tell ...
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1answer
42 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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1answer
147 views

7z commandline: test archive and only show failures?

What is the easiest way to get only the failures from 7z when testing an archive for integrity? Looking at the command-line options, there seems to be no verbose or non-verbose option (i.e. there ...
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1answer
2k views

7-Zip command line to zip all the content of a folder (without zipping the folder itself) [duplicate]

Possible Duplicate: Create an archive from a directory without the directory name being added to the archive I have a folder that I want to zip completely: MyFolder | |--- ...
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1answer
527 views

Extracting file using 7-Zip is taking too much time

I am trying to extract a ZIP folder using 7-Zip from the command line: 7z x "%BackupFileDestination%" -o"%ExtractDestinationDir%" It is taking too much time to do so. It is even hanging on a few ...
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1answer
399 views

7-zip -xr!*.bat is creating an empty archive with the batch files name

I am trying to exclude files from a 7-zip batch. The syntax is: for %%A in (*) do "C:\Program Files\7-Zip\7z.exe" a -tzip -xr!*.docx "%%A.zip" "%%A" -xr!*.bat The command is creating zip files ...
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1answer
11k views

7zip Add to Archive: How to exclude certain file types/extensions?

I want to archive a folder but want to exlude all media files. How do I leave out: *.avi *.flac when archiving?
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1answer
951 views

7zip - self-extracting executables require admin privileges and trigger compatibility warning

When I create self-extracting archive executables for Windows with 7zip, the .EXEs trigger UAC on Windows7. And frequently after unzipping, I get this: I'm using commandline like: 7z a -sfx7z.sfx ...
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8answers
13k 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?
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Unzip a specific subfolder in an archive with the 7-Zip command line version

I want to unzip an ZIP archive, but just a subfolder in it. Example structure archive.zip: -rootfolder --subfolder ---subsubfolder I just want to unzip subsubfolder with 7-Zip (preferably). How ...