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

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Windows batch extract zip files, into folders based on zip name and combining similar zips

I have been searching for a way to bulk extract zip files in a directory and extract them into individual folders based on their zip file name. I found: Extract all Zip's in a directory (incl. ...
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17 views

Program or script to walk directory structure, based on my loop

I've the following loop and would like some help expanding it's functionality. for /D %d in (*.*) do "c:\Program Files (x86)\7-Zip\7z.exe" a -tzip "%d.zip" ".\%d\*" Currently, in a directory ...
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49 views

7zip - Use Windows Task Scheduler to zip a file that has timestamp of previous day

I have a web server that generates log files everyday, the log of the day will be automatically saved as Log.YYYY-MM-DD.txt (i.e. Log.2016-07-20.txt). Now I need to use Windows Task Scheduler to zip ...
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23 views

How to make self extractor exe without close and cancel button using 7 zip?

I want to make a self extractor exe using 7zip. I dont want close and cancel button in the extracting window. I am able to make extractor but its without the progress dialog. command: COPY /Y /B ...
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29 views

How to create a.bat file to unzip multiple .7Z files?

I try to create a .bat file to extract (unzip) multiple 7Z files, each to separate folder, with the folder name equal to the name of the 7z file: file1.7z ---> in the directory file1 ...
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50 views

7z How to pass password and avoid prompt?

In Linux, I am using 7z to decrypt a *.7z encrypted file. Is there a way to pass in the password via pipe or any other method that can be automated? I tried echo password | 7z x archive.7z but still ...
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62 views

Can I open .zip files created with 7-zip without 7-zip?

I use 7-zip to create several archives with fixed size (512 Mb) from one big file. And they have strcuture: my_name.zip.001 my_name.zip.002 ... my_name.zip.005 My problem is that without 7-zip I ...
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29 views

Can I tell if folders in two different 7zip files are identical?

I have two 7zip files: A.7z and B.7z Is it possible to know if folder X in both archives are the same, and if not, how do they differ? I know I can simply extract both folders and compare them but I ...
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36 views

Unable to extract Zip files with password

I am unable to extract zip files secured with password using the Windows built-in compression utility. It prompted me for password and after I supplied one, it kept complaining "wrong password" ...
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67 views

How can I quickly decompress a 1TB (5 million file) 7-Zip (7z) file stored on a NAS

There is a 7-Zip (7z) file (size: 1TB with about 5 million files inside) in a NAS device running in iSCSI mode. The 7-Zip file was compressed by the “only store not compress” mode. When the files ...
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34 views

Getting listing of files in split-volume 7zip archive

I'm using the following command to create a multi-part (each 1G) 7zip archive under Windows 10 (basically a full backup of my documents area): 7z a -r -v1g -bb -y \path\to\zips\xyzzy.7z . This ...
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16 views

Compress only specific files from a folder while preserving folder structure

Say I have 1 main folder and 10 sub-folders, each with .avi, .html ,.txt and .srt in them. Now I want to preserve the folder structure but I want to only compress the .srt files into .7zip. Is there ...
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25 views

7-Zip Ultra - Does zipping multiple other 7-zip ultra compression files have any significant size difference?

I have a lot of files, mostly png and pdf, some svg, some various others, that need to be transferred. Multiple TB worth, files individually aized anywhere from a few kb to a few mb. The problem is ...
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33 views

How do I extract all archives in the subdirectories of this folder?

I have researched this title and the answer of the following CMD file was given: FOR /D /r %%F in ("*") DO ( pushd %CD% cd %%F FOR %%X in (*.rar *.zip) DO ( "C:\Program ...
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Looking for command line values for an older (9.22 beta) 7zip

Better yet, is there a help file for the older 7zip utility? I want to test some PW recovery tools (build encrypted zip w/ known PW). This is probably trivial but starting from a 7zip.exe that has ...
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35 views

How can I compress multiple files to multiple zip using 7-ZIP?

for example I have one folder which contains below mentioned files: 001.txt 001.doc 002.txt 002.doc 003.txt 003.doc Continue.... I want all similar file names each in separate zip. e.g. 001.zip ...
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35 views

How to download/extract half a file

There is a Google Ngram file that I want to download which is like a Terabyte in size (after extraction). It's too big for me to download, but I don't need the whole file all at once. I could just ...
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44 views

Extract file from a zip inside another zip using 7z command line

I know this command: 7z e [archive.zip]-o[outputdir] [fileFilter] But the file I wanna extract is in a Zip inside another Zip for example: Archivo1.zip\Carpeta1\Archivo2.zip I use this line ...
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128 views

7zip - Create self-extracting Archive (sfx) with specified Extract path

Hello SuperUser Experts, Thank you for your help in advanced. I am trying to get the 7zip SFX archive to create an executable. I am able to get the executable. But when I run it, it give the ...
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16 views

Unzip 7zip to certain directory

I'm using this command line: 7z e d:\dev\projects\dbs\test\osc.data.db d:\dev\projects\dbs\test\osc.data.7z I think the first parameter should be the output, and the 2nd paramater should be the ...
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Issue with 7zS.sfx/7zSD.sfx

I'm trying to create my own installer. I have my file "7zSD.sfx (incorporated" in "lzma1600.7z" - Also try it with the "7zS.sfx" file incorporated in 7z920_extra.7z.), Config.txt and File.7z. My "...
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333 views

7Zip Cannot create symbolic link, access is denied to libhdfs.so and libhadoop.so

I am working on Windows 10 and trying to install Hadoop I downloaded it from here. When trying to extract Hadoop for files (libhdfs.so and libhadoop.so) I am getting the error. Cannot create ...
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27 views

Jpeg File Zipping does not compress at all

i'm trying to compress some jpeg photos, the total dimension is around 150MB, but when i try to zip it using the maximum compressing rate, i keep getting something around 150MB. I tried with Winrar ...
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29 views

What version of tar does 7-zip use?

Does anyone know what version of tar 7zip uses for archiving/extracting? Is it gnu tar or bsd tar... or something else? I've googled around for an answer but can't find anything.
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31 views

Can 7-Zip store the final archive to a custom path on a different partition?

I have a folder "D:/Tutorials/Exercise files" I want to compress "Exercise files" folder and put it on E:/Tutorials/ folder, that is on drive E: automatically from within the 7-zip program. Does 7-...
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37 views

How to get archive in cpio format with 7zip command line

"C:\Program Files\7-zip\7z.exe" a -tcpio initrd initrdcpio\bst mods\bstnet.ko I have tried this command, but got an error
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40 views

Update all the files in the archive with 7zip

I am using a command line version of 7zip (7za.exe). I have the following file in the folder: 7za.exe 1.txt test.zip test.zip contains several occurrences of 1.txt inside its zipped folder ...
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49 views

Command Line to “batch” unrar many Archives into Subfolders accordingly

in Windows 10, i have an folder F:\archive with about 300 different "File 1.rar" "Otherfilename 307.rar" Knowing Linux better then Windows I spend some time to compile the following command and it ...
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How can I get dictionary size of 7z archive using comand line?

I've got an 7z archive, I've read manuals but couldn't find how can I get dictionary size of this archive using comandline?
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Alter .zip double-click action to work with .7zip (Windows 10)

Currently my setup has it so that all file extensions that are supported by 7zip are extracted on double click into a folder pertaining to the name of the archive. This works perfectly on all file ...
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124 views

Use ISO instead of ZIP or RAR to store files?

I have been doing some backups of my old files and lately I was wondering if there is another method of storing and compressing files other than ZIP or RAR. In my case, I want to store various group ...
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33 views

What are the disadvantages of using ultra compression?

7zip offers an option for ultra compression but I'm guessing that it has some disadvantages (other than being more time consuming) or else it would have been the default option... So what are they?
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7zip batch file does not include extension Why?

I found the below batch file and it works fine but I need the code to add the extension to the final zip file. I am sure this is a simple question but I have tried everything. @echo off cd /d %~dp0 ...
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How easy is to recover uncompressed data if one sector is damaged in a 7zip archive?

I have around 100,000 small files which I backup every few weeks. Because they are really small, write speed to my external 2.5" USB 3.0 HDD is really slow. In 7zip, I compressed them using ...
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Why is plain jar file compressed to 76% but after ProGuard shrink & obfuscate; it is compressed to 102% ?! How to fix?

I have a jar file of size 392 MB. I made another copy of it, so I have now two copies of the same jar file. For one of them I used 7-zip to compress it. It is compressed to 76% of the original size, ...
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how to extract .exe files from .zip archive (7-zip stuck on executable)

I face a problem that when I want to extract some .zip archive which includes .exe it will always stuck on that executable and do nothing. I never had such problems before, i can't remember at least. ...
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36 views

TAR and compress a directory but skip compression on already compressed files

I want to TAR and compress a user's home directory as efficiently as possible. The problem is there are a lot of large and already compressed (gzip/bzip2) and hard-to compress files (binaries/data) in ...
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32 views

Edge and Chrome Changing Downloaded File Extention

I'm downloading a file with the .lzp extension that both Chrome and Edge are changing it to .zip. It does appear to be a zip file just with a new extension. But the program that I'm using it for, the ...
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146 views

Creating 7zip SFX installer

I'm trying to create self extracting archive with gui, I'm using 7-Zip 9.20 on Windows 10, I just want the files in the 7z file to extract to the InstallPath directory, without running the file. I ...
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7zip File Compression Auto-Selection

When I'm zipping a folder hierarchy, I'd like 7zip to automatically detect whether a file in the folder tree is or is not already compressed, so that it automatically chooses whether to merely add an (...
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25 views

7-zip defaults to 7z extension - win 7 has no icon for this extension

I would either like to: a) set the win 7 zip folder icon as a default for the .7z extension OR b) set the 7-zip default extension to zip instead of .7z Win 7 pro SP1 (64b) 7-zip 15.14 (64b)
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257 views

How to open this file? *.ps.gz

Please somebody help me to open this file . I am not able to open it/unzip it after downloading.I always get an error when I try to unzip using 7zip.
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222 views

Extract .7z archive keeping modified dates of extracted folders

I have a .7z archive created with 7zip, and I can see the contents, including the folders with their modified dates intact. When I extract the archive however, the newly extracted folders all have ...
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28 views

7-Zip auto replace original file option

I right-clicked a folder and selected "Add to Archive..." from the "7-zip" drop down menu then, a menu appears from there I can archive the file, however, the program doesn't automatically delete ...
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Integrate .7z like .zip into windows explorer?

Is there a way to integrate .7z files like .zip files in Windows explorer. Where (like .zip) you double click the .7z file and the directory is opened in the explorer. Providing a password for ...
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Using 7-Zip for peer-to-peer LAN backups, good or bad idea?

Context: A couple of computers have a few gigabytes of documents to back-up. Most of the hard drive is empty. I want to use 7-Zip to create password protected archives and distribute it among the ...
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126 views

True Crypt Alternative For Encrypting Drives

I have Windows 7 Pro and as such, bitlocker won't work for me. I have some sensitive information which I have locked with an AES-256 key in a 7zip folder, but I would like to encrypt my entire drive ...
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7zip is creating solid .zip files. Cannot add/remove/overwrite to .zip files ad-hoc

I'm using 7zip as an archive creation tool. .7z files may be created as solid or nonsolid files. .zip files are supposed to be inherently nonsolid. I have ~5GB of hierarchal folder/file structure ...
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33 views

How do I fix 7-Zip's default localization for its shell integration?

7-Zip installed itself in my native language. I managed to change the language of the 7-Zip program via its UI, but its shell integration is still in my native language. Is there any way I can ...
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How does “Word Size” affect compression?

In 7 Zip when adding a folder to an archive there is the option to change the Word Size. How does this word size affect compression, in particular the final size of the zip? I noticed that changing ...