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

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7
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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?
2
votes
1answer
970 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 ...
10
votes
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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2answers
1k views

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 ...
2
votes
2answers
6k views

7-ZIP can't open pictures in Windows default photo viewer (Windows 7)

I updated 7-ZIP to the latest version 9.2, but when I try to open e.g. jpg from zip archive I always get a message "Windows Photo Viewer can't open this picture because either this picture is deleted, ...
6
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2answers
19k views

7-Zip command line to extract a folder from an archive

I'm using the 7-Zip commandline to extract a ZIP archive called abc.zip which is an archive with a folder called 'zipper' with three text files in it (a.txt, b.txt, and c.txt). My problem is when I ...
1
vote
3answers
334 views

Does 7zip compression level affect decompression speed?

I have a directory that I would like to password protect and encrypt. I am using PeaZip to do this using 7zip compression. I'd like to use the 7z like a directory and hard drive space is not a ...
8
votes
2answers
4k views

Make 7-Zip extract an archive directly to a directory

Whenever I extract an archive using 7-Zip, it performs a two step operation. First it extracts the contents of the archives to a temporary folder, then Windows copies the files from the temporary ...
0
votes
1answer
158 views

7zip, Extract to a folder as default in the GUI

I am using 7zip for the first time coming over from WinRAR but its missing an important feature for me. I want to be able to extract my files to a folder like so: C:/Downloads/file.zip press extract ...
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3answers
6k views

windows batch file 7 zip archive files using date range

I am currently running a batch file that backs up all my files created or modified within the past 24 hours using an old version of Winzip. I use 7 zip for a lot of archiving and would like to be ...
1
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1answer
2k views

Create an archieve with current date and time in file name using 7z command line

Today I lost my whole Far Cry 3 save game suddenly. So now I want to backup it's save game folder automatically on a certain period of time using windows task scheduling. I want to include date and ...
4
votes
2answers
155 views

How can I specify the order files should be compressed in 7zip?

I have a set of files I would like to compress that I know to be repetitive and compressible, but 7zip chooses a non-optimal order to compress the files and fails to take advantage of their ...
2
votes
1answer
2k views

Command line 7Zip to extract file by specified result path

Is it possible to make 7Zip extract one file by name from archive to specified full path (including new filename)? I've found only: 7zip e <archive> -o<resultDirectory> <filemask> ...
4
votes
4answers
25k views

7-Zip CMD: Add current date to archive and include only the last modified folder in archive

I'm trying to create a backup script with 7-Zip. I have everything else done already, but these two issues are still blocking me. Firstly, I want to add a timestamp with a create date like this: ...
1
vote
1answer
168 views

Command line 7Zip to create archive without extension

If I specify full extensionless result path 7zip adds one corresponding to the type of created archive. How can I make it name the result file exactly as I have specified in command line argument?
0
votes
1answer
534 views

Why doesn't 7-zip appear in the contextual menu in Windows Explorer for MATLAB's .mat files after installing MS Office?

I use MATLAB and after installing MS Office 7-zip doesn't appear any more in the contextual menu when trying to zip some .mat files: http://youtu.be/uJvSC4oCes8. How can I solve it?
11
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7answers
11k views

7zip doesn't ask me for password for a zip I encrypted while double-clicking it

I just tried to encrypt a folder with 7zip by command line choosing a password but when double-clicking on the zip file, it shows me the files list without asking any password. Any other alternative ...
0
votes
0answers
141 views

Can't extract really long file name with 7-zip

I have scoured this page which seems to be the only info I can find on extracting really long file names. Although the examples in this page deal with compressing, I would think the same principles ...
1
vote
2answers
135 views

7zip: Extract archive(s) which take up >= 50% of HDD

How can you use 7zip to extract a collection of .rar files which if extracted normally would surpass the size of your HDD? Say your HDD was 10GB, if you had a zip archive of 5GB, how could you ...
0
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1answer
1k views

7-zip backup folders, exclude some of folders but keep excluded folder's name

By using 7-zip in Linux I need to save zip file to absolute path: /var/www/vhosts/mysite.com/httpdocs/app/webroot/myfiles.7z backup all files and subfolders inside this: ...
1
vote
1answer
944 views

How to show extraction progress of 7zip inside cmd?

7z.exe do not show any extraction progress in cmd."C:\Program Files\7-Zip\7zG.exe" -y x -pPASSWORD "D:\Myfile.rar" Extracts the file with a GUI progress-bar. But I don't want a GUI progress bar. I ...
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0answers
66 views

How to hide error dialog box in 7zip?

I am using "C:\Program Files\7-Zip\7zG.exe" -y x -pmypassword "D:\Myfile.rar" -o"D:\Extracted Files\" for extracting a file encrypted with password. Now if 'mypassword' is not the correct password ...
3
votes
1answer
3k views

Incremental backup with 7zip

I have googled and searched, but can't find the command that 7zip command line utility uses for making incremental backups. So can someone please share the command ? Thanks btw I found this link: ...
1
vote
1answer
1k views

Why a “Not enough space on disk” error on 7zip even with sufficient space?

I am using 7-zip to split a large folder (>200 GB) into chunks of 4.7GB so that I can burn them onto a DVD. But for now, I am storing these chunks in an external hard disk which has ~300GB of space. ...
10
votes
1answer
2k views

How to stop 7-Zip from automatically downloading and opening a zip file in Chrome?

I have checked the "Ask where to save each file before downloading" option in Chrome settings yet after installing 7-Zip, every time I click on a link which targets a .zip file: chrome doesn't fire ...
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0answers
79 views

Batch rearchive zip into 7z using best options and asking for each what to do

Batch repacking zip archives into 7z this one helps a bit, but I would like to get asked for each ZIP files to what to do(opts: delete, repack, leave as it is), and idk if this script does, but after ...
0
votes
1answer
49 views

Is it possible to strip the extension before archiving?

I'm not sure about this, but is it possible to save files in an archive under a different name? I'm trying to do this as I'm currently using 7-zip as part of a batch file script to process a bunch of ...
3
votes
1answer
119 views

Is there a way to compress files at different compression levels inside a single 7zip file? [duplicate]

Some files are compressed using their own compression scheme and some aren't. If I try Max compression on an already compressed file, I'll get 1%-2% better compression at most. The amount of time ...
5
votes
1answer
362 views

How to exclude a folder in 7zip?

I want to compress the folder C:\Temp but without a specific subfolder (e.g. C:\Temp\test). How can I do that with 7zip? I've come up with the following command: c:\Temp>7zip a -t7z test.7z ...
1
vote
2answers
666 views

Is there a way to determine the original size or file count of a 7-zip archive?

I know that when I compress an archive with the 7za utility, it gives me stats like the number of files processed and the amount of bytes processed (the original size of the data). Is it possible, ...
1
vote
1answer
281 views

7zip command to extract with full paths (excluding first folder level)

Using 7zip command line version, I need to extract a .7z file with full paths but excluding the first folder level within the archive. I thought that this command below would work but it still ...
2
votes
1answer
1k views

Create a 7-Zip including only specified folder and excluding certain extensions. No scanning

I'm trying to create a 7-Zip archive that would compress a certain folder (only specified one!) while excluding a certain file extension. I've come up with this: "PATH-TO-7Z.EXE" a archive.7z ...
3
votes
3answers
6k views

What parameters are ok to pass to 7-zip .exe file creation while using the GUI

What parameters are ok to pass to the create archive wizard , in the 7-zip GUI, when you are creating a self extracting archive? The 7-Zip GUI has a field that allows you to type in multiple ...
0
votes
1answer
843 views

7ZIP - Command Line Compression | Can Never Keep it Simple

I've been Googleing for a few hours on how to just compress a file inside a directory and I can't find anything. I found how to just compress a folder in general. Now I wish to know how I can compress ...
0
votes
1answer
166 views

7zip commandline equivalent of these gui settings?

I'm trying to compress an archive using the following GUI settings: 7z, Fastest, LZMA2, Dict 64KB, Word 32, solid block 8mb, cpu threads 8. "C:\Program Files\7-Zip\7z.exe" a -t7z ...
0
votes
2answers
1k views

How to install non Microsoft USB device driver on PC without admin rights?

I am running Win 7x32 secured corporate laptop. My USB audio device has .exe installer file which is not possible to execute because of having no admin rights. Is it possible to embed driver files in ...
40
votes
3answers
47k views

How can I unzip a .tar.gz in one step (using 7-Zip)?

I am using 7-Zip on Windows XP and whenever I download a .tar.gz file it takes me two steps to completely extract the file(s). I right-click on the example.tar.gz file and choose 7-Zip --> Extract ...
20
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3answers
19k views

How can I install 7zip so I can run it from Terminal on OS X

I would like to be able to run 7zip from the command line on Mac. Does anyone have instructions on how to set this up?
0
votes
1answer
83 views

Extracting one file from archive: 7-zip requires decompressing entire archive?

I've noticed that when browsing an archive containing multiple files with 7-zip 9.20 Windows GUI, extracting one file for previewing takes significantly longer with .7z than .rar archives. With .7zips ...
2
votes
2answers
825 views

What does the number after 7-zip's -m switch mean?

7-zip has a command line switch to set the compression method, -m followed by a number, e.g. -m0=LZMA. What does the number (0 in the example) mean? Different numbers produce slightly different ...
0
votes
1answer
361 views

How to create a locked (read-only) 7zip archive?

You can create a "locked" RAR archive using WinRar such that the files can't be modified or deleted, and they become readonly without using a password. Is it also possible with 7z format? It is ...
0
votes
1answer
361 views

zip sub folders individually

can anyone help me make a batch file for my problem. i have multiple folders that i want to compress individually. root folder 1 file 1 file 2 ...
3
votes
1answer
4k views

7-zip - how to use command line to include/exclude large list of files

I'm (trying) to develop a program to operate the 7-zip console program (7z.exe) via ShellExecute() and passing it a computer-generated list of files. Now what I want to do is this : I want to pass ...
0
votes
1answer
459 views

7Zip and forfiles - Invalid argument/option - 'a'

I need some help with a script I'm working on. It seems I'm missing something. The command line is as follows: forfiles /P "F:\source_path\" /M *.bak /D -1 /C ""D:\7za\7za a -tzip -mx7 -v40m ...
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3answers
8k views

Extracting a Zip File with Japanese Filenames?

I'm trying to extract files from a zip file on Windows 7. The filenames are in Japanese, but they just look like éñé▀é─é±é─ü[é╓é┐éσèGòùé▄é╟é⌐üÖâ}âMâJâZâbâg20110423. They include a 3D model file and ...
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votes
8answers
19k views

How to make 7-zip do a whole bunch of folders

I got a bunch of pictures that I had to crop into 800x600 pixels. That was easily done, but now I have to upload them so the family can see them all. Thing is, this is 500MB in pictures. I decided to ...
2
votes
2answers
585 views

7zip multiple files into multiple 7z files

I have a bunch of files in a directory and want to 7zip each one into its own 7zip archive So, for example, 1.csv, 2.csv, 3.csv will end up as 1.7z, 2.7z, 3.7z Is this possible with a .bat file in ...
1
vote
0answers
2k views

7-zip command line -p switch not working according to help page [Solution Found]

I want to be able to automate the encryption of the file type .pcapng in a windows batch script. My current problem is that I get an error when extracting the encrypted file saying something along the ...
1
vote
1answer
354 views

find files with spaces modified in last 60 days and tar.gz in files no bigger then 4gb with date

I maintain a file server. I need to backup files that have changed in a period of time. First i compressed up everything to 4gb files and backed up to dvd. But 7z that I was using 7z a -t7z ...
0
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3answers
400 views

How to store complete path using 7z on linux

I am looking for a simple way to backup files that have changed in the last 24 hours and creating a daily 7zip file ( I don't need permssion or users just files ). Using the following command I can ...