7-Zip 是一款开源的解压缩软件。主要用在Windows操作系统，Unix-like的操作系统如Linux与FreeBSD下面有7-zip的移植版本p7zip可以使用。它提供命令行接口的程序或图形用户界面的程序，而且可以与资源管理器结合。7-Zip是自由软件，由Igor Pavlov于1999年开始发展，并把主体在GNU LGPL下发布，加密部份使用AES的代码，使用 BSD license发布，解压RAR部分使用RAR特定的许可协议。
7-Zip 主要特征- 使用了 LZMA 与 LZMA2 算法的 7z 格式 拥有极高的压缩比
- 支持格式：压缩 / 解压缩：7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
- 仅解压缩：ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR, Z
对于 ZIP 及 GZIP 格式，7-Zip 能提供比使用 PKZip 及 WinZip 高 2-10% 的压缩比为 7z 与 ZIP 提供更完善的 AES-256 加密算法7z 格式支持创建自释放压缩包Windows 资源管理器集成强大的的文件管理器更给力的命令行版本支持 FAR Manager 插件支持 87 种语言
7-Zip 适用于 Windows 10 / 8 / Win7 / Vista / XP / 2013 / 2008 / 2003 / 2000 / NT。并且有支持 Linux / Unix 平台的命令行移植版本。
7-Zір 18.06 Fіnаl:
Тhе ѕрееd fоr LZМА/LZМА2 соmрrеѕѕіng wаѕ іnсrеаѕеd bу 3-10%,
аnd thеrе аrе mіnоr сhаngеѕ іn соmрrеѕѕіоn rаtіо.
Ѕоmе bugѕ wеrе fіхеd.
Тhе bug іn 7-Zір 18.02-18.05 wаѕ fіхеd: thеrе wаѕ mеmоrу lеаk іn хz dесоdеr.
7-Zір 18.02-18.05 uѕеd оnlу оnе СРU thrеаd fоr bz2 аrсhіvе сrеаtіоn.
18.05 Final
– The speed for LZMA/LZMA2 compressing was increased
by 8% for fastest/fast compression levels and
by 3% for normal/maximum compression levels.
– 7-Zip now shows Properties (Info) window and CRC/SHA results window
as “list view” window instead of “message box” window.
– Some improvements in zip, hfs and dmg code.
– Previous versions of 7-Zip could work incorrectly in “Large memory pages” mode in
Windows 10 because of some BUG with “Large Pages” in Windows 10.
Now 7-Zip doesn’t use “Large Pages” on Windows 10 up to revision 1709 (16299).
– The vulnerability in RAR unpacking code was fixed (CVE-2018-10115).
– Some bugs were fixed.
18.01 Final
– 7-Zip now can unpack DMG archives that use LZFSE compression method.
– 7-Zip now doesn’t allow update operation for archives that have read-only attribute.
– The BUG was fixed:
extracting from tar with -si switch didn’t set timestamps for directories.
– Some bugs were fixed.
v17.00 beta:
– ZIP unpacking code was improved.
– 7-Zip now reserves file space before writing to file (for extraction from archive). It can reduce file fragmentation.
– Some bugs were fixed. 7-Zip could crash in some cases.
– Internal changes in code.
16.04更新记录：
- The bug was fixed: 7-Zip 16.03 exe installer under Vista didn’t create links in Start / Programs menu.
- Some bugs were fixed in RAR code.
16.03更新记录：
– Installer and SFX modules now use some protection against DLL preloading attack.
– Some bugs were fixed in 7z, NSIS, SquashFS and RAR5 code.Download 7-Zip 18.06 (2018-12-30) for Windows:http://www.7-zip.org/a/7z1806.exehttp://www.7-zip.org/a/7z1806-x64.exeDownload 7-Zip 18.05 (2018-05-01) for Windows:7-Zip for 32-bit Windows:http://7-zip.org/a/7z1805.exehttp://7-zip.org/a/7z1805.msi7-Zip for 64-bit Windows x64:http://7-zip.org/a/7z1805-x64.exehttp://7-zip.org/a/7z1805-x64.msiDownload 7-Zip 16.04 (2016-10-04) for Windows:7-Zip for 32-bit Windows:http://7-zip.org/a/7z1604.exehttp://7-zip.org/a/7z1604.msi7-Zip for 64-bit Windows x64:http://7-zip.org/a/7z1604-x64.exehttp://7-zip.org/a/7z1604-x64.msi
