7zip功能很强大，你只要两个文件,7z.exe以及7z.dll就可以使用命令行工作了。
安装完7zip软件后，在其安装目录下找到7z.exe和7z.dll两个文件，将其复制到C:WindowsSystem32便可以在DOS直接应用。
常用方式：
-o (set Output directory) switch
Specifies a destination directory where files are to be extracted.
This switch can be used only with extraction commands.
Syntax-o{dir_path} {dir_path} This is the destination directory path. It's not required to end with a backslash. If you specify * in {dir_path}, 7-Zip substitutes that * character to archive name.
Example 7z x archive.zip -oc:Doc
extracts all files from the archive.zip archive to the c:Doc directory.
7z x *.zip -o*
extracts all *.zip archives to subfolders with names of these archives.
Usage: 7za <command> [<switches>...] <archive_name> [<file_names>...]
[<@listfiles...>]
1. "a"，添加文件
7z a -t7z files.7z *.txt
2. "d", 删除文件
7z d archive.zip *.bak -r
从zip文件中删除所有的*.bak文件
3. "e", 解压缩
7z e archive.zip
4. "l", 列出文件
7z l archive.zip
5. "t", 测试完整性
7z t archive.zip *.doc -r
6. "u", 更新
7z u archive.zip *.d
7. "x", 与e相同，但保留全路径
8. "m", 指定优化级别
Compression switch: -mx0
What it means: Don't compress at all.
Is called "copy mode."
Compression switch: -mx1
What it means: Very low compression.
It is called "fastest" mode.
Compression switch: -mx3
What it means: Fast compression mode.
Will set various parameters automatically.
Compression switch: -mx5
What it means: Same as above, but "normal."
Compression switch: -mx7
What it means: "maximum" compression.
Compression switch: -mx9
What it means: "ultra" compression.
(You probably want to use this.)
9. "-m"选项：
Switch: -mfb
Function: Specifies # of fast bytes.
Sometimes help with very "sparse" files.
Don't bother.
Switch: -mpass
Function: Number of passes for deflate compression.
Don't bother with this.
Automatically set with levels.
Switch: -md
Function: Specifies dictionary size.
Automatically set, so don't bother.
Switch: -mmt
Function: Enable multithreading.
Use if: you have quad-core and a really huge archive.
Specify "on" or "off".
This may be enabled by default; check the help file.
10. "-t"选项
指定压缩文件类型
Type switch: -t7z
Format: 7Z
Example filename: archive.7z (default option)
Type switch: -tgzip
Format: GZIP
Example filename: archive.gzip
archive.gz
Type switch: -tzip
Format: ZIP
Example filename: archive.zip (very compatible)
Type switch: -tbzip2
Format: BZIP2
Example filename: archive.bzip2
Type switch: -ttar
Format: TAR
Example filename: tarball.tar (UNIX and Linux)
Type switch: -tiso
Format: ISO
Example filename: image.iso
Type switch: -tudf
Format: UDF
Example filename: disk.udf
7z a -tiso archive.iso
7z a -tudf archive.udf
7z: executable name
a: add to archive
-tiso or -tudf: format of archive to create
archive.iso or archive.udf: name of archive to create
10. 硬压缩
Switch: -ms=on
Function: Enable solid mode.
This is the default so you won't often need this.
Switch: -ms=off
Function: Disable solid mode.
This is useful when you need to update individual files.
Will reduce compression ratios normally.
11. "-p"设定密码
7z a pw.7z *.txt -pSECRET
12. 其它选项：
Switch: -ssc
Function: Specify case-sensitive mode.
Useful for going between Linux and Windows.
Default: -ssc- on Windows (insensitive)
Default: -scc on Linux (sensitive)
Switch: -ssw
Function: Compress locked files.
Use if: you have problems with opening files.
Switch: -w
Function: Set working directory.
Use when you want to specify temp folders.
Switch: -aoa
Overwrite all destination files.
Switch: -aos
Skip over existing files without overwriting.
Use this for files where the earliest version is most important.
Switch: -aou
Avoid name collisions.
New files extracted will have a number appending to their names.
(You will have to deal with them later.)
Switch: -aot
Rename existing files.
This will not rename the new files, just the old ones already there.
Use when the new files are more important.
7z x test.zip -aoa
7z: use the 7-zip executable
x: use the extract command
test.zip: extract files from this archive
-aoa: overwrite all existing files. risky!
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