本帖最后由 崔乐 于 2012-6-15 09:28 编辑
WinRAR 是一个强力压缩工具,允许你管理和操作压缩文件。控制台 RAR 只支持 RAR格式,带有的 ".rar" 扩展名的文件。ZIP 和其他格式不被支持。Windows 用户可以安装图形界面 RAR 版本 - WinRAR,它可以处理更多的压缩文件类型。 虽然控制台 RAR 和图形界面 WinRAR 有相似的命令行语法,但是它们还有有一些不同。所以推荐使用此 rar.txt 手册用于控制台 RAR(rar.exe 在 Windows 版本的情况下),winrar.chm 是图形界面 WinRAR(winrar.exe) 的帮助文件。 WinRAR 的功能包括: 1.高度成熟的原创压缩算法
2.对于文本、声音、图像和 32 位和 64 位 Intel 可执行程序压缩的特殊优化算法
3.获得比类似工具更好的压缩率,使用'固实'压缩
4.身份校验(只有注册版本可用)
5.自解压压缩文件和分卷压缩(SFX)
6.对物理损伤的压缩文件的恢复能力
7.锁定,密码,文件顺序列表,文件安全和更多…… 
WinRAR 4.20 正式版 更新内容: 1. Changes in RAR compression:
a) RAR general compression algorithm is optimized for better
utilization of several processor cores. While some speed gain
is possible even in single processor mode, best results
are achieved in multi-core environment.
Speed gain depends on data type and average file size.
Several cores are utilized more efficiently when compressing
large files.
b) we had to increase memory requirements to achieve higher
compression speed. General RAR compression algorithm allocates
about 120 MB comparing to 40 MB in WinRAR 4.11;
c) RAR text compression algorithm cannot utilize several CPU cores
efficiently, so its performance in multiprocessor environment
is much lower than for general algorithm. Also its decompression
speed is much lower than in general algorithm regardless of
CPU number. So we decided to disable the text algorithm by default.
If you need maximum possible compression ratio for plain text data
regardless of speed, you can enable the text compression
in "Advanced compression parameter" dialog. Press "Compression..."
button on "Advanced" page of archiving dialog to access it.
You can also change this option permanently in default compression
profile;
In the command line mode the text compression can be enabled
with -mct switch;
d) "Fastest" (-m1) compression mode also supports several processor
cores now. In 4.11 it could use only a single processor core.
2. RAR general decompression algorithm speed is slightly improved,
though not to same extent as RAR compression. RAR decompression
is not able to use several processor cores, so its performance
does not depend on a number of cores.
3. Changes in ZIP compression:
a) now ZIP compression supports several processor cores resulting
in noticeably higher performance in multi-core environment.
Single CPU ZIP compression is also faster than in 4.11;
b) memory use for ZIP compression is increased to about 15 MB.
4. Recovery volume creating and processing can use several CPU cores
resulting in higher speed. Though, typically hard drive seek speed
is a limiting factor for recovery volumes, so this gain is most
noticeable when working with solid state drive.
5. Now the allowed value for -mt switch is 1 - 32,
not 0 - 16 as before.
6. "Find files" command can search data in 7-Zip archives.
Previously "Find files" did not support .7z archive format.
7. Windows 2000 is not supported by WinRAR and WinRAR self-extracting
modules anymore.
8. "Save current settings" button in "Advanced SFX options" dialog
is now available only when converting an existing archive to SFX.
Options saved with this button are applied only to convert to SFX
operation.
If you create or update SFX archive, only SFX options stored
in default compression profile are used. Options saved
in "Advanced SFX options" dialog are ignored for these operations.
WinRAR 4.20 Beta1 32位 最新汉化版下载
WinRAR是一款流行好用的压缩工具,支持鼠标拖放及外壳扩展,完美支持 ZIP 档案,内置程序可以解开 CAB、ARJ、LZH、TAR、GZ、ACE、UUE、BZ2、JAR、ISO 等多种类型的压缩文件;具有估计压缩功能,你可以在压缩文件之前得到用 ZIP 和 RAR 两种压缩工具各三种压缩方式下的大概压缩率;具有历史记录和收藏夹功能;压缩率相当高,而资源占用相对较少、固定压缩、多媒体压缩和多卷自释放压缩是大多压缩工具所不具备的。

WinRAR 4.20 Beta1 更新内容:
1. Changes in RAR compression:
a) RAR general compression algorithm is optimized for better utilization of several processor cores. While some speed gain is possible even in single processor mode, best results are achieved in multi-core environment. Speed gain depends on data type and average file size. Several cores are utilized more efficiently when compressing large files.
b) we had to increase memory requirements to achieve higher compression speed. General RAR compression algorithm allocates about 120 MB comparing to 40 MB in WinRAR 4.11;
c) RAR text compression algorithm cannot utilize several CPU cores efficiently, so its performance in multiprocessor environment is much lower than for general algorithm. Also its decompression speed is much lower than in general algorithm regardless of CPU number. So we decided to disable the text algorithm by default.
If you need maximum possible compression ratio for plain text data regardless of speed, you can enable the text compression in "Advanced compression parameter" dialog. Press "Compression..." button on "Advanced" page of archiving dialog to access it. You can also change this option permanently in default compression profile; In the command line mode the text compression can be enabled with -mct switch;
d) "Fastest" (-m1) compression mode also supports several processor cores now. In 4.11 it could use only a single processor core.
2. RAR general decompression algorithm speed is slightly improved, though not to same extent as RAR compression. RAR decompression is not able to use several processor cores, so its performance does not depend on a number of cores.
3. Changes in ZIP compression: a) now ZIP compression supports several processor cores resulting in noticeably higher performance in multi-core environment. Single CPU ZIP compression is also faster than in
4.11; b) memory use for ZIP compression is increased to about 15 MB. 4. Recovery volume creating and processing can use several CPU cores resulting in higher speed. Though, typically hard drive seek speed is a limiting factor for recovery volumes, so this gain is most noticeable when working with solid state drive.
5. Now the allowed value for -mt switch is 1 - 32, not 0 - 16 as before.
6. "Find files" command can search data in 7-Zip archives. Previously "Find files" did not support .7z archive format.
7. Windows 2000 is not supported by WinRAR and WinRAR self-extracting modules anymore.
支持运行环境:Windows XP/Vista/Windows7
WinRAR 4.20 Beta1 最新汉化版(32位):
(1.4MB)
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