7zip

The program can be used from a Windows graphical user interface that also features shell integration, from a Windows command-line interface as the command 7za or 7za.exe, and from POSIX systems as p7zip.[12] Most of the 7-Zip source code is under the LGPL-2.1-or-later license; the unRAR code, however, is under the LGPL-2.1-or-later license with an "unRAR restriction", which states that developers are not permitted to use the code to reverse-engineer the RAR compression algorithm.[13][14]

As far as I know, 7-zip.org provides a GUI (7-zip File Manager) application only for Windows. If you have PeaZip installed, you can try using that, or you can use the default Xarchiver, although, if you choose the latter and deal with .rar files, you will probably also have to install the p7zip-rar package using apt.

7zip

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If you have PeaZip installed, you can try using that, or you can use the default Xarchiver, although, if you choose the latter and deal with .rar files, you will probably also have to install the p7zip-rar package using apt.

Recently I needed to process a bunch of data that can be valid LZMA stream, can be invalid (e.g. damaged) LZMA stream, or just can look like it. I searched pure OCaml implementations and found none. Then I found the old library, but after a while decided to implement my own bindings. At first I tried to use liblzma from xz-utils, and created Ctypes-based bindings. But after working with them I found out that xz-utils implementation is not thread-safe, thus causing a heap corruption/segfaults when ran in many threads. So I switched to 7zip implementation of LZMA algorithm, and implemented bindings around them ocaml-lzma_7z.

Background:

I am doing a project in which I am benchmarking various platforms from across the 2000s using 7zip compression/decompression benchmark. I have been running Mint 19.3 XFCE 32 bit to benchmark all of the other systems but want to benchmark a system with an Athlon XP 3200+ for comparative purposes. Mint is unable to boot on this hardware, I believe because K7 is lacking support for SSE2 or some related instruction. I have gone through some attempt and failure with other distros which has led me to where I am at currently.

The problem:

I have installed Q4OS Gemini Trinity 32 bit and am writing from this machine. The installation does not seem to include 7zip preinstalled which is fine, however I am having issues when I try to install it. I have looked at another post from this forum which seems to say 7z should be preinstalled but I am not seeing this I have not had much success attempting to install it. When I try sudo apt install p7zip I get the error that the package has no installation candidate. I have tried a few different abbreviations for 7zip but cannot get anything to install. I assume I am overlooking something very simple, but need some guidance. Thanks!

The original 7-Zip is indeed available for Windows only. Its port to Linux is p7zip. I had no problem to install it on my x64 machine and it is available for i386 as well.

Did you try first to update the database of available packages?

The base package to install is p7zip. Other packages (p7zip-full and p7zip-rar) add more archive formats. Note that it is a command-line only application, no GUI is included.

Alternatively you can consider installing wine, which enables to execute Windows applications, to be able to install and run the original 7-Zip with its GUI.

If, as I suppose, you are new to linux, I encourage you to make your first steps with the "Command line interface" (CLI), i.e. using the terminal.

One valuable thing to know, is that most commands one can issue in the CLI can be used to get help on how to use them. For the p7zip command, for example, simply type after the command prompt ($)

If you prefer using a "Graphic User Interface" (GUI), you might consider using Ark. If you right-click on a zip file, Ark is likely to be an option to open it. I believe that p7zip isn't enabled by default in Ark. To enable it, in ark menu:

- Configuration > Configure Ark... > External modules

- check P7zip

I didn't notice yet, but I can't live without that feature

So I'm trying to do that with a button, but I can't get it to work.

I tried checking if the archive contains only one folder and then if, move it's content up, but I don't know how.

Or should I rather command line to 7zip somehow to do the extraction?

Can you help me?

However it tends to create left-over .tmp files (9 over 2 days), I want to delete these. According to multiple 7zip forums, patch requests, & other websites I can change the directory it stores those, but nothing more. I speculate this shouldn't be happening & something is wrong, furthermore occasionally it has skipped files. I want to keep a log, even if everything is fine, its a good fall back if something goes funky.

My batch file has a separate line/command for each PST: 7z.exe u -t7z JENNIFER.7z JENNIFER.PST -r. I have successfully gotten a log when I append " >7zip.log". However when I do that for two different lines/commands only the last one is logged, thus I assume its being overwritten.

Side note: Now that I think about it my backup agent might be interrupting access to .7z files, thus causing all this. However oddly enough the batch file is a 'windows scheduled task' & it ran with result 0x0 (which if I remember right is success) & backup was also successful. Either way I'd like to learn how to properly log with 7zip & feedback on why .tmp files may be left over from a compression command

Do you have any compression software installed that you know of?? Seems 7zip, similar to winrar, or winzip is installed on your system. 7 zip is taking over your compressed downloads for your drivers. Do you see 7 zip in your installed programs/features.

For example, I updated geforce experience tonight and it is a application setup exe. You should not have 7 zip taking over unless your file association is messed up by this "unknown" 7zip compression software.

I found 7z as an application under C:\Program Files (x86)\NVIDIA Corporation\NVIDIA GeForce Experience. I have Winrar installed but not 7zip. Also I found this : -GeForce-Experience-114106-program.aspx

I had similar problems with 7zip self extracting (.exe) files and the manual extract files from graphicall (also with some other non-Blender 7zip compressed files). I assume you are using some sort of Windows if you need the redistributable.

Somehow, on Windows 7 OS, 7zip .exe lost administrator privileges during install.

Try installing these from administrator login, and not another login requiring administrator permission (a pop-up dialog that asks for administrator password before install begins). Only Vista and Windows 7 do this AFAIK so if you have either this may be your situation.

For me 7-zip is blocked by group policy (which I can not control) and I want to find a full exe that doesn't extract using 7zip. Several posts already here suggest going to to get the full download but at least the English US version for windows is NOT a "full" exe version. When I run as administrator or not it starts the extracting window and when it is almost complete I see the message 7-Zip This program is blocked by group policy. For more information, contact your system administrator.

One way is to use the 7z.dll or 7za.dll (available from sf.net for download). The 7za.dll works via COM interfaces. It, however, doesn't use standard COM interfaces for creating objects. You can find a small example in "CPP\7zip\UI\Client7z" folder in the source code. A full example is 7-Zip itself, since 7-Zip works via this dll also. There are other applications that use 7za.dll such as WinRAR, PowerArchiver and others.

It would be nice to use 7zip from within Step7, similar to PKZIP and WinZip. WinZip itself is faster than PKZIP, but its not a freeware. If someone knows the command/handles passed from Step7 to WinCC/PKZIP then perhaps that can be used to construct the equivalent 7zip command.

We were trying to archive with 7zip instead of PKZip. It did not ended well....Twice, the archive was corrupted and once we had some strange problems on a test project which worked until we archived it.

Obviously, this is not the standard Siemens way and I wouldn't suggest using 7zip over PKZIP. It also mean you may not get any tech-support assistance from Siemens. Here is how I did it:

Please find attached screenshots for the batch codes used.

In the examples, I have used the lowest compression settings, these can ofc be modified to suit. 7zip supports multiple compression algorithms (DEFLAT64/LZMA2 etc.) and options (set CPU cores/memory/dictionary files/compression settings etc.) which can be varied and combined as required. I have also modified my Windows PATH to point to the 7zip installation folder. ff782bc1db