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  1. 7-Zip is a popular open source file archiver for Windows, Mac and Linux systems. A new version, 7-Zip 22.00 is now available; it is the first stable release in 2022. The last release dates back to December 2021, when 7-Zip 21.07 was released. 7-Zip users may download the latest version of the application from the official website. Downloads for 64-bit, 32-bit and ARM versions of Windows are supported. The program is still compatible with out-of-support versions of Windows, including Windows XP and Vista. All officially supported versions of Windows, including server versions, are supported as well. 7-Zip 22.00 for Linux is available for download already, while the Mac OS version is not yet available. 7-Zip 22.00 final 7-Zip 22.00 brings along with it several new features that extend the functionality of the application. The new version of the archiver supports the extraction of Apple File System APFS images. Apple introduced the Apple File System in Mac OS 10.13 and on iOS several years ago. The file system is optimized for flash and solid state drive storage solutions. TAR archive support has seen several improvements in 7-Zip 22.00. 7-Zip can create TAR archives in POSIX tar format using the switches -ttar -mm=pax or -ttar -mm=posix now. Additionally, 7-Zip may store file timestamps with high precision in tar/pax archives using the switches ttar -mm=pax -mtp=3 -mtc -mta. Last but not least, Linux users may use the following two new switches with TAR archives: -snoi : store owner/group ids in archive or set owner/group ids from archive to extracted files. -snon : store owner/group names in archive On Windows, 7-Zip 22.00 adds support for the -snz switch, which propagates the Zone.Identifier stream to extract files. The stream is used by Windows for security purposes; it may be used to determine whether a file has been created locally or been downloaded from the Internet. The preference is also available in the graphical user interface. Open 7-Zip and go to Tools > Options. Switch to the 7-Zip tab in the options window, and set the preference "Propagate Zone.Id stream to one of the following values: No -- default. 7-Zip does not propagate Zone.Identifier streams. Yes -- 7-Zip propagates Zone.Identifier streams for all jobs. For Office files -- 7-Zip propagates Zone.Identifier streams for Office files only. 7-Zip 22.00 includes a new options window in the "add to archive" configuration dialog. It includes options to change the timestamp precision, change other time related configuration options, and block the changing of the last access time of the source files. You may check out the full changelog on Sourceforge. Now You: do you use 7-Zip or another file archiver? 7-Zip 22.00 final is now available Frontpaged: 7-Zip 22.00
  2. Recent versions of the open source archiver 7-Zip have a vulnerability that has not been fixed yet. Successful exploitation of the vulnerability allows privilege escalation and the execution of commands; it appears that the issue can be exploited locally only. Filed under CVE-2022-29072, the vulnerability is using the included 7-Zip Help file, 7-zip.chm, for the exploit. Attackers need to drag and drop files with the 7z extension on to the Help > Contents area in the 7-Zip interface. Vulnerability details have been published on GitHub. The page provides technical information and a short demonstration video of the exploit. It is unclear if and when 7-Zip will address the issue. The last update of the application dates back to the release of 7-Zip in December 2021 Users of the application may use the following workaround to mitigate the vulnerability on their devices. Since it is using the included Help file, one way of dealing with the issue is to delete the Help file. Open the 7-Zip installation directory or folder on the system. On Windows, these are usually C:\Program Files\7-Zip or C:\Program Files (x86)\7-Zip, depending on whether the 64-bit or the 32-bit version of the application has been installed. Locate the file 7-Zip.chm; this is the help file. You can open it directly to display its content. Hit the delete button on the keyboard or right-click on the file and select the Delete context menu option, to remove it from the system. You may get a prompt, File Access Denied. If that is the case, select Continue. The file is moved to the recycle bin of the operating system by default. 7-Zip functionality is not reduced when you delete the help file. The Help file won't open anymore after the deletion, when you select Help > Contents in the 7-Zip File Manager or press the F1-key on the keyboard. Closing Words Deleting the Help file does not take longer than a minute. While it appears unlikely that the issue is exploited on large scale, most users may want to remove the Help file to protect their systems against exploits targeting the issue. Now You: which archiver do you use? (via Deskmodder) Workaround for security issue in 7-Zip until it is fixed
  3. 7-Zip 21.0 alpha introduces native Linux support Each year, the free archiver 7-Zip gets updated to a new version. The developer of the application has released two alpha previews of this year's 7-Zip 21 version. Reason enough to take a look at the new version of 7-Zip and the changes and improvements compared to the previous versions of the file archiver. The latest alpha release is available on the 7-Zip project site. Just download the 32-bit, 64-bit or 64-bit ARM64 version of the program from the site and run the installer after the download. One of the main changes, introduced in the second alpha release, 7-Zip 21.01, is that a command line version of 7-Zip for Linux has been released. The release is not included in the main packages for Windows; the download site lists two downloads for the command line version for Linux that are for 32-bit/64-bit and 64-bit ARM Linux devices. A readme file is included that explains core functionality of the command line version. The Linux version includes all changes from the latest 7-Zip version for Windows. The full changelog is relatively short. The first alpha version, released in January 2021, made internal code changes, fixed several unspecified bugs, and added Tajik and Uzbek localizations. The latest release, 7-Zip 21.01 alpha, released on March 9, 2021, includes several improvements. Next to the Linux command line version, it is addressing a long-standing bug in 7-Zip that dates back to version 18.02. Previous versions of 7-Zip had sometimes issue extracting ZIP archives with xz compression; this bug is fixed in the latest alpha release of 7-Zip and will find its way into the next stable release of the application as well. Speed of the ARM64 version of 7-Zip has been improved in the release according to the release notes. Last but not least, several bugs were fixed that were not mentioned specifically. The alpha version ran stable and without issues on the test system; most users may want to wait until the final version is released. Those on Linux may give the new command line version a go on the other hand. Now You: which file archiver do you use? (via Deskmodder) Source: 7-Zip 21.0 alpha introduces native Linux support
  4. Homepage : https://www.7-zip.org/ 21.04 beta 2021-11-02 ------------------------- - 7-Zip now reduces the number of working CPU threads for compression, if RAM size is not enough for compression with big LZMA2 dictionary. - 7-Zip now can create and check "file.sha256" text files that contain the list of file names and SHA-256 checksums in format compatible with sha256sum program. 7-Zip can work with such checksum files as with archives, but these files don't contain real file data. The context menu commands to create and test "sha256" files: 7-Zip / CRC SHA / SHA-256 -> file.sha256 7-Zip / CRC SHA / Test Archive : Checksum The commands for command line version: 7z a -thash file.sha256 *.txt 7z t -thash file.sha256 7z t -thash -shd. file.sha256 New -shd{dir_path} switch to set the directory that is used to check files referenced by "file.sha256" file for "Test" operation. If -shd{dir_path} is not specified, 7-Zip uses the directory where "file.sha256" is stored. - New -xtd switch to exclude directory items from processing. Download 7-Zip 21.04 beta (2021-11-02): Link Type System Description Download .exe 64-bit Windows x64 7-Zip for Windows Download .exe 32-bit Windows x86 Download .exe 64-bit Windows arm64 Download .msi 64-bit Windows x64 (alternative MSI installer) 7-Zip for 64-bit Windows x64 (Intel 64 or AMD64) Download .msi 32-bit Windows x86 (alternative MSI installer) 7-Zip for 32-bit Windows Download .7z Windows x86 / x64 7-Zip Extra: standalone console version, 7z DLL, Plugin for Far Manager Download .tar.xz 64-bit Linux x86-64 7-Zip for Linux: console version Download .tar.xz 32-bit Linux x86 Download .tar.xz 64-bit Linux arm64 Download .tar.xz macOS (arm64 / x86-64) 7-Zip for MacOS: console version Download .7z any / Windows 7-Zip Source code Download .7z any / Windows LZMA SDK: (C, C++, C#, Java)
  5. Just a month after 7-Zip 21.05 Final comes a new version of the open source archiver for Microsoft's Windows operating system. 7-Zip 21.07 The new version of 7-Zip is already available. Users can download it from the project's website for all supported operating systems (Windows 32-bit and 64-bit, Windows 64-bit ARM) to install it or upgrade existing versions of the archiver on a system. 7-Zip 21.07 introduces support for VHDX disk images that it can now extract. These are Microsoft Hyper-V Virtual Hard Disk v2 format files, and files with the VHDX extension may be extracted just like any other archive using the archiver. Just right-click on a VHDX file in Explorer or another file manager and select the extract option of 7-Zip to extract the contents of the disk image to the system. The file type can also be opened in 7-Zip to browse the contents without extraction. Virtual hard disk files may be created for virtual environments, and it may sometimes be useful to access files that they contain directly. 7-Zip supports the extraction of several virtual disk image formats, including VHD, VDI and VMDK. The update introduces the following additional changes to the archiver: New switches: -spm and -im!{file_path} to exclude directories from processing for specified paths that don't contain path separator character at the end of path. In the "Add to Archive" window, now it is allowed to use -m prefix for "Parameters" field as in command line: -mparam. The sorting order of files in archives was slightly changed to be more consistent for cases where the name of some directory is the same as the prefix part of the name of another directory or file. TAR archives created by 7-Zip now are more consistent with archives created by GNU TAR program. 7-Zip does not support the new right-click menu of Microsoft's Windows 11 operating system yet, but the developer of the program, Igor Pavlov, is working on adding support in a later version. 7-Zip 21.07 Final released with VHDX disk image extracting support
  6. How To Use 7-Zip To Encrypt Files If you need strong command line encryption on Linux, look no further than 7zip You have information on your machines that needs to be secure. This could be client data, company secrets, or your own personal information that you don't want viewed by the wrong person. To that end, you'll go to some rather challenging means to protect that information. But what if that task could be made considerably easier? Although some might not think of the command line as the easier option, there are some CLI tools that do make short shrift of a task. Such is the case with 7zip. Although this tool is typically used for zipping and unzipping files, it also includes the ability to encrypt and decrypt those files. I want to walk you through the installation and usage of 7zip for file encryption. I'll be demonstrating on Ubuntu Server, but the tool can be used on most Linux distributions. What you'll need A running Linux distribution A user with sudo privileges Some data to encrypt How to install the 7zip package on Linux distributions Chances are slim your Linux distribution includes the 7zip package. In order to install the package that includes the encryption features, log in to your Linux machine, open a terminal window, and issue the following command: sudo apt-get install p7zip-full -y To install on a different type of distribution, use a similar command as shown above, substituting apt-get for the likes of dnf or zypper. That's all there is to the installation. How to encrypt files with 7zip Let's say you have the file webservers, which contains important information about the web servers in your data center. To encrypt that file with 7zip, issue the command: 7z a -p -mx=9 -mhe -t7z webservers.7z webservers The options used above are: a: Add files to archive -p: Prompt for a password -mx=9: Level of compression (9 being ultra) -mhe: Encrypt file names -t7z: Generate a 7z archive You will be prompted to create a passphrase for the encryption. Once you've done that, the new encrypted file webservers.7z is created. You can also encrypt multiple files. Say you have the files webservers and kubernetes to be encrypted into the file data.7z. The command for this would be: 7z a -p -mx=9 -mhe -t7z data.7z webservers kubernetes the above command would create the encrypted data.7z file, encrypted by the password of your choice. Once you've encrypted the files, you should then delete the originals. Why? Because those original files (in our examples webservers and kubernetes) aren't encrypted. Only the newly created .7z files are encrypted. So delete those files with the command: rm webservers kubernetes How to decrypt files with 7zip Those files wouldn't be of any use to you if you couldn't decrypt them. So how do you do that? We have the files data.7z and webservers.7z. With 7z, file decryption is done like so: 7za e data.7z or 7za e webservers.7z In either instance, you'll be asked for the passphrase you created during the encryption process. If you failed to delete the original files (which you shouldn't neglect to do), 7z will ask if you want to overwrite the existing files--in our examples that would be webservers and kubernetes (Figure A). Figure A Once you've decrypted the file(s), you can then view their contents. And that's the gist of using 7zip to encrypt and decrypt files. For anyone who needs strong command line encryption on Linux, this might well be the ideal choice for you. Source
  7. I was inspired by mrpink, and oozy to integrate custom themes.. which i used to do by default.. Thanks to both of them for the kind words & inspiration :) - Updated December 3, 2013... 7-ZipPortable_9.32_32bit_64bit_Multilingual.paf.exe CRC32: 2247DF30 2.50 MB (2,631,415 bytes) 7-Zip_Theme_Patcher_x.x_32bit_64bit_Multilingual.paf.exe CRC32: 989A75EB 758 KB (777,121 bytes) Note: only compatible with nSane™ edition... How to apply: Install 7-ZipPortablelaunch patcher.. if you have PortableApps directory.. it will auto-detect.. otherwise.. select 7-ZipPortable directory.apply ...
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