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

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270 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
81 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 ...
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1answer
198 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
2k 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
3k 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
354 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
472 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
37 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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0answers
217 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
6k 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
55 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
543 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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1answer
37 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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1answer
370 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
434 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
183 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
121 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
6k 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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999 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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0answers
97 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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2answers
1k 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
554 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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1answer
59 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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354 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
565 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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2answers
146 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
473 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
7k 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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2answers
1k 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
1k 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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238 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
346 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
262 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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0answers
45 views

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
1k 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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1answer
282 views

Extract Java7u60 Server on Windows

I've downloaded the file server-jre-7u60-windows-x64.tar.gz from http://www.oracle.com/technetwork/java/javase/downloads/server-jre7-downloads-1931105.html and am trying to extract it with 7Zip. I ...
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1answer
2k 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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26 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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0answers
76 views

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
2k 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
145 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
54 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
67 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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1answer
228 views

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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1answer
226 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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1answer
51 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
464 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
842 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
3k 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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3answers
9k views

How can I create a batch job (.bat) that zip a folder?

From 7zip I've downloaded their command line tool 7za.exe, and I have to following script: echo off cls set zip ="C:\7za.exe" set filename="%date%.backup.zip" set pathtobackup="C:\MyDocs" %zip% ...