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

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3
votes
4answers
7k views

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

I am looking for a way to search the content of files inside of a 7-Zip archive (.7z) without having to unpack the archive. I have many 7-Zip archives with code inside them and I'd like to search ...
0
votes
1answer
199 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. ...
2
votes
4answers
961 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 ...
4
votes
3answers
9k views

What is encryption loss when unzipping?

When I drag files from a .ZIP file my friend sent me, it barks: Do you want to copy this folder without encryption?` A problem is preventing that folder from being encrypted. What's ...
0
votes
0answers
87 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 ...
0
votes
1answer
64 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 ...
8
votes
4answers
14k views

7-zip & Windows 7: Make “Extract to <folder>” default on double-click

I'm trying to find a way to make the action you can perform from the context menu, "Extract to <folder_same_as_file_name>" the default action when double-clicking the file instead of simply ...
0
votes
0answers
30 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 ...
2
votes
2answers
70 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 ...
1
vote
0answers
187 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 ...
0
votes
1answer
94 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 ...
0
votes
1answer
45 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
votes
1answer
91 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 ...
0
votes
2answers
3k 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 ...
2
votes
3answers
629 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 ...
1
vote
2answers
619 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 ...
1
vote
3answers
2k views

Can I get the black and white 7zip filetype icons back?

I've been using 7-zip for a long time. Any archive that 7-zip recognizes was given a black and white [7z] icon. I just switched from Win7 32 bit to Win7 64 bit, and when I reinstalled 7-zip all of ...
1
vote
1answer
909 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 ...
1
vote
1answer
146 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 ...
3
votes
2answers
172 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. ...
0
votes
1answer
29 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 ...
8
votes
3answers
2k 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 ...
0
votes
1answer
46 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% ...
1
vote
1answer
283 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 ...
0
votes
0answers
26 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 ...
0
votes
2answers
7k 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?
0
votes
1answer
31 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 ...
0
votes
0answers
35 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 ...
0
votes
1answer
178 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 ...
-2
votes
2answers
81 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 ...
-1
votes
4answers
6k views

7z file manager crashed and left temp files behind

So I did a drag&drop extraction from 7z (windows), which creates temporary files (this was on purpose, as I was extracting to a network share.) Unfortunately, 7z crashed during this process and ...
1
vote
2answers
400 views

Read x64 registry branch from 7-zip SFX Installer via PowerShell

I want my 7-zip self-extracting archive to run a PowerShell script after it extracts files. To do that, I use method described here: ...
14
votes
5answers
30k views

Extract 7z files with standard linux tools?

I know that you can extract .7z files with 7-zip. Is there another standard linux program that can do this? Maybe one of these tar bzip2 xz gzip I will add that bsdtar can do this, but is not ...
0
votes
3answers
2k 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 ...
0
votes
0answers
603 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 ...
11
votes
4answers
18k views

add password to existing zip file with 7zip

Is it possible to add a password to an existing zipfile with 7zip without going to all the trouble of unpacking it and re-packing it again?
0
votes
0answers
122 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 ...
4
votes
4answers
5k views

Recursively unzip files where they reside, then delete the archives

I goofed up a setting on the backup software I use. Normally I would have the files from a network share get loaded into a spare drive, compressed into zip folders, then sent off to the offsite hub. ...
2
votes
2answers
2k views

Convert .tar.gz/.tar.bz2 to .7z in batch?

How do I convert .tar.gz and .tar.bz2 files to .7z files using the command line?
1
vote
0answers
72 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 ...
18
votes
5answers
35k views

Missing Explorer menu options for 7-Zip

Just reinstalling 7-Zip (v.9.2) to a new system, and I cannot find the context-menu option in Explorer. In the 7-Zip options there is no plugins tab (as detailed in the documentation) to change this ...
0
votes
0answers
50 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 ...
10
votes
8answers
40k 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 ...
2
votes
4answers
225 views

What other archive formats save Date Created and Date Accessed?

7-Zip on Windows will save the Date Created and Date Accessed when compressing a .zip file, however it does not do this for its (referring to 7-Zip) native .7z format. Any Unix-based formats are ...
7
votes
3answers
9k views

What does the percent sign (% and %%) in a batch file argument mean?

I think I'm missing something because I can't seem to find what this means. Example: for /D %%A in (*) do "\7za.exe" u -t7z -m9=LZMA2 "%%A.7z" "%%A" That line was supposed to use a command line ...
3
votes
1answer
6k views

Extract and overwrite existing files

I am trying to write a batch script to extract files out of an existing zip file, into another folder on my desktop and to have the system not prompt me as to whether I want to overwrite the existing ...
0
votes
2answers
271 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 ...
0
votes
1answer
202 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 ...
9
votes
4answers
15k 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 ...
4
votes
3answers
254 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: ...