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

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How do I decrypt seczip AES256-encrypted files using 7-Zip?

Using 7za on SLES 11, how do I decrypt AES256 files? I have created these files on a mainframe using “seczip” with password protection and AES256 encryption. I want to decrypt them on an SLES 11 ...
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1answer
19 views

7zip not allowing file extension in the archive name

7za.exe a C:\temp\file.txt.7z C:\temp\file.txt Error: there is no such archive why is 7zip not allowing file extension in the archive name? I even tried it with simple period in the archive name, ...
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15 views

Set maximum size of zip/7z archive

I have multiple files that I would like to pack into archives of no more than 100MB. The only option I could find was to split the archive into volumes, but what I want is standalone archives that can ...
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1answer
48 views

All zip files downloaded as 7zip

Ever since I downloaded 7zip, and even after I uninstalled it, is that all my zip files are downloaded as 7z files. How in the world can I stop this?! I have been looking for answers for about a month ...
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24 views

Why does 7-Zip's compression speed lower over time?

I'm busy backing up my local server files, which amounts to just under 4GB of data in ~295000 files. I selected 7z as the format, and set the level to Store. The process started pretty quickly, but ...
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45 views

how unpack rar file?

i try unpack rar file: http://fias.nalog.ru/Public/Downloads/20150309/fias_dbf.rar (4+ gb), but get errors from every methods. i try unpack with unrar-free package, my command: unrar-free x ...
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43 views

7-zip gives error msg: “Can not open file 'xxxx.7z' as archive”

I packed my document in a 7-zip archive: music, photo, docs and other couple weeks ago. After I reinstalled OS and tried to unpack this zip archive to my PC, but 7-zip gave error msg: "Can not open ...
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1answer
29 views

7zip file splitting “DVD” setting too big for a DVD

I'm using 7Zip to split some large files so that I can copy them onto DVDs. I've done this before, using 7-zip's "Split to volumes" feature, and using the "DVD" size. This is creating files that are ...
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2answers
29 views

Remove particularly tricky items from context menu

I've found various sources of info about removing these annoying things which I never use... but I haven't succeeded in getting rid of the following. (Avira-related:) - Scan selected files with ...
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17 views

Using 7zS.sfx - Any way to force uninstall of all versions (current or previous)

Here's my situation: I am building an application using a setup and deployment project in VS 2010 and packaging it into a self-extracting executable using 7zS.sfx. Generally, my users like to execute ...
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89 views

Windows .bat script to recursively archive (with 7zip) files in subfolders

I'm struggling to achieve the following DIR1 FileA FileB SUBDIR2 --->FileC --->FileD --->SUBDIR3 ------>FileE ------>FileF etc and end up ...
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1answer
29 views

7zip reports corrupt file although checksum matches

I transferred a large (140GB) disk image to my machine over ftp in 7z format using 4Gb chunks. When I had downloaded it, none of the chunks can be opened using 7zip. On the first file, I get an ...
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1answer
25 views

shortcuts opening as 7zip files [duplicate]

My brother tried to open a .lnk file with 7zip and now every shortcut tries to open in 7zip, how do i undo this or fix this? I genuinely have no idea what to do or where to start and no one else ...
2
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1answer
64 views

How do I zip a bunch of files with the same name with their paths?

I have many files with the same name in many folders throughout a project on a Windows PC. There are hundreds of thousands of source files in thousands of folders. They need to be sent out for ...
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2answers
97 views

Unpacking .z01 .z02 .z03 without .zip on LINUX

I have received several archives and they all have extensions of .z01 .z02 .z03 etc. There is no .zip file and no .z00 file. If I transfer these files to my Mac and run them through un-stuffit, it ...
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1answer
145 views

How to change Windows 7 zip icon

I have a strange problem with 7zip and default icons in windows-explorer for file-type *.zip. I know that setting and replacing icons for 7zip has already been thoroughly discussed on the net. I have ...
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1answer
57 views

Zipping Sub-folders

I want to use 7-Zip to zip subfolders to another folder on the same drive. Each sub-folder has zillions of text files. I just want to zip subfolder as a whole via Powershell. I have a script but ...
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2answers
58 views

Create a .zip file that can be opened by PKZIP 2.50 with 7-zip

I need to create a .zip file that can be unzipped by a very old version of PKZIP - version 2.50. I am currently using 7-zip to try this, but I can use a different zip program so long as it has a CLI. ...
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1answer
27 views

Dragging a folder full of files into another folder which automatically zips and moves it to an archive drive

I have a question regarding archiving on windows 7 and I will preface it with the problem in an effort to identify what solution I need. Our workflow process dumps printable files to a numbered ...
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47 views

7-Zip: Opening image from 7z archive produces error code 0x8000000a

I've tried encrypting a folder containing a text file and an image with AES encryption using the .7z format. When I enter the password to open the encrypted folder the two files are displayed. I can ...
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3answers
644 views

How to prevent 7-Zip encrypted zip file passwords from being stored on the hard-drive?

I've encrypted a folder with 7-Zip 9.20, specifying 256-bit AES and a password, and the .zip file was created. But then, when I clicked on the zipped file, to my surprise, PeaZip 5.1.1, which was the ...
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1answer
32 views

How do I keep folder integrity when compressing files in different folders

I have a batch file that runs on our dedicated servers every day and compresses the files. Here is a piece of the batch file: %SUBDIR%7z a -tzip %fullname% %datapath%\*.txt >>%LOGFILE% ...
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1answer
151 views

Batch File for Download + Unzip (.7z) + Delete + Rename

I would like to create a .bat file in order to download and make following operations on 2 files (FILE1-Date.7z & FILE2-Date.7z) whose names are updated with "Date" information everyday. The batch ...
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19 views

Odd 7z Extracting Behavior

In short, I would like to use command-line 7z to extract an archive and recreate the directory structure of the archive. I know the function letter for this is "x" yet it does not seem to work for ...
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1answer
26 views

How to rebind select command in 7-zip?

In 7-zip, there's a very useful command Edit -> Select which is bind to Grey + , that is, the numeric keyboard + I'm using a laptop, it is unconvinent to access numeric keyboard key. Is it ...
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34 views

How to create a script to intelligently .zip numbered files?

I have a directory with a bunch of files with numbered file names (e.g., 002361). I'd like to write a script to regularly .zip them (or .rar, or .7z) based on their file names AND only update the ...
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1answer
92 views

How can I have a custom 7Zip batch script work like the “add to archive…” context menu action of 7Zip?

I am trying to figure out a way to select several files and folders in Windows Explorer and add them to a password protected .zip archive using a batch script, 7zip and a custom context menu item. ...
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1answer
98 views

Is there a way to compress folders individually using 7zip on a large collection of folders?

How can 260 folders be zipped individually using 7zip with a single command? The person who originally asked this question voluntarily deleted the post. Since it was an interesting task, I ...
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2answers
29 views

How do I pipe 7za output directly to psql?

I have a Postgres database dump in a .7z archive. I can extract it and import it with: 7za e dump.7z dump psql -h localhost db_name < dump but I'm just running out of disk space. What is the ...
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2answers
61 views

7Zip Zipping up directories

I want to use 7 zip to compress and archive folders but I want it to exclude existing .7z files if they exist and not duplicate them with a .7z.7z ext I found this but it duplicates the already zipped ...
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3answers
981 views

How to reduce the size of windows OS Iso file?

I have an Iso file of windows 8.1 pro with December '14 updates. The problem is the file is too big to be burned on a normal 4.7GB DVD , its around 4.8. Now is it possible to remove a few updates so ...
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320 views

How to unpack rar archive with p7zip under Centos 7

I'd like to make my 7z command to be able to extract RAR archives. I have installed p7zip and p7zip-plugins packages from EPEL repository. However, if I try to extract a rar file like this: 7z x ...
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73 views

How to modify files within mszip (cab) executable?

I can list and extract certain executable contents using 7z. It seems to be using standard compression methods. Path = test.exe Type = Cab Method = MSZip How can I modify files inside that ...
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52 views

7zip on command line: can I use both include and exclude switches?

Here's my directory structure (in Windows 8.1): parentdir\ child1\ child2\ grandchild1\ grandchild2\ grandchild3\ ... child3\ child4\ ... Using ...
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40 views

Linux equivalent settings for 7zip

I'd like to use the same settings as below (Win7) on Linux to compress files, but I fail to get equal compression results, for which I blame myself not correctly using 7za. So far, I have 7za a ...
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2answers
68 views

how to disable 7 zip from opening normal applications folders and files?

So I've been having trouble with my 7 zip on windows xp. I don't know what i did, but suddenly all of my normal folders,applications and files have started opening in 7 zip,even though their not ...
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3answers
182 views

Extract large archive with 7-zip

I have a 76 GB disk image that's split in 28 files (Foo.7z.001 to Foo.7z.028) in "Storage" format and I want to extract it into my D: drive (which has 523 GB available). I've tried all 7-Zip settings: ...
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29 views

Fixing the 7-zip COM surrogate issue?

My favorite archiver 7zip is unable to open the pictures in Windows Picture Viewer. The creator Igor Pavlov Says: The Program1 (some photo file handler) calls another Program2 (windows photo viewer) ...
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1answer
48 views

7z from bash script won't exclude directories

I've encountered with kinda strange behaviour of 7z (or bash, I don't know yet.). With the following script: #!/bin/bash find /home/user -type f -name "*.pdf" | cut -c 10- > ...
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211 views

Why does Firefox keep trying to download 7zip_14396_stf.exe and setup_tsv48ouvr.exe

When I start Firefox for the first time, two files try to download, but their download fails. I have searched to find out what these files are. The "7zip" file is from safe downloads, and it looks ...
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1answer
204 views

zip file (with spaces in the files name) to unzip and rename files and zip back

I'm trying to rename the contents of a zip file to match the name of the zip file with a batch file. This is exactly what I'm trying to do : ...
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135 views

Extract and delete all zip and rar files in subfolders + rename if files in archive have same name

i have few thousands rar and zip files in folders and subfolders. I want to extract them, and if there are the same filenames, for example: dir1 -subdir1 archive.zip ...
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2answers
74 views

7-zip extras for Linux

I want to pack a folder containing various resources and executables into a single self-extracting file and execute a command after that, "setup.exe" for example. I've successfully accomplished that ...
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1answer
212 views

How to rename 7-Zip split files as name_00N.zip instead of name.zip.00N

On Windows, when I create .zip split files with volumes less than 20MB with a command like: 7z a name.zip files\* -v20M I get one or more files named name.zip.001, name.zip.002, etc. I need to ...
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1answer
2k 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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67 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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2answers
454 views

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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3answers
412 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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74 views

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
127 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 ...