7zip 9.20安装后不支持rar格式的文件，需附加安装其他文件，首先下载2个源码包
http://sourceforge.net/projects/p7zip/files/p7zip/9.20.1/
p7zip_9.20.1_src_all.tar.bz2 和 p7zip_9.20.1_x86_linux_bin.tar.bz2
先将p7zip_9.20.1_src_all.tar.bz2解压，进入解压后的文件夹p7zip_9.20.1中
执行./install.sh 命令后出现一下提示表示安装成功
这时p7zip已经安装完成，可以运行7za命令，但7za命令无法解压rar文件，还需要安装另一个源码包：
在解压p7zip_9.20.1_x86_linux_bin.tar.bz2，此时会默认将这个包里的内容也解压到p7zip_9.20.1文件夹中
这时p7zip_9.20.1文件夹中会多出一个bin目录，安装bin/Codecs/Rar29.so
或者将p7zip_9.20.1_x86_linux_bin.tar.bz2解压出来的文件夹(可以删除之前解压出来的7zip_9.20.1文件夹)放到指定的软件安装目录中，将bin目录下的7z和7z.so文件复制到/usr/sbin目录中，此时就可以使用7z命令来解压rar文件了。
对于Window下的常见压缩文件.zip和.rar，Linux也有相应的方法来解压它们：
1)对于.zip
linux下提供了zip和unzip程序，zip是压缩程序，unzip是解压程序。它们的参数选项很多，可用命令zip -help和unzip -help查看，这里只做简单介绍，举例说明一下其用法：
# zip yajiu.zip yajiu.jpg yajiu.png
这条命令是将yajiu.jpg和yajiu.png压缩成一个zip包
# zip yajiu.zip *.jpg
这条命令是将所有.jpg的文件压缩成一个zip包
# zip -r yajiu.zip yajiu
这条命令是将文件夹yajiu压缩成一个zip包
# unzip yajiu.zip
这条命令是将yajiu.zip中的所有文件解压出来
yajiu@yajiu-desktop:~$ cd 图片
yajiu@yajiu-desktop:~/图片zip yajiu.zip yajiu.jpg yajiu.png
updating: yajiu.jpg (deflated 34%)
updating: yajiu.png (deflated 0%)
yajiu@yajiu-desktop:~/图片$ zip yajiu.zip *.jpg
adding: 1.jpg (deflated 34%)
adding: 2.jpg (deflated 0%)
yajiu@yajiu-desktop:~/图片$ zip -r yajiu.zip yajiu
adding: yajiu/ (stored 0%)
adding: yajiu/yajiu.zip (stored 0%)
adding: yajiu/yajiu.jpg (deflated 34%)
adding: yajiu/yajiu.rar (deflated 0%)
adding: yajiu/yajiu.7z (deflated 0%)
adding: yajiu/yajiu.png (deflated 0%)
yajiu@yajiu-desktop:~/图片$ unzip yajiu.zip
Archive: yajiu.zip
replace 1.jpg? [y]es, [n]o, [A]ll, [N]one, [r]ename: y
inflating: 1.jpg
replace 2.jpg? [y]es, [n]o, [A]ll, [N]one, [r]ename: y
inflating: 2.jpg
yajiu@yajiu-desktop:~/图片$
原文链接：http://hi.baidu.com/zgyz/blog/item/f7ef29085c90d4d663d98665.html
2)对于.rar
安装： sudo apt-get install rar unrar
或者可从http://www.rarsoft.com/download.htm下载 RAR for Linux 编译安装
# tar -xzpvf rarlinux-3.8.0.tar.gz
# cd rar
# make
这样就安装好了，安装之后就有了rar和unrar这两个程序，rar是压缩程序，unrar是解压程序。它们的参数选项很多，可用命令rar -help和unrar -help查看，这里亦简单举例说明一下其用法：
# rar a yajiu.rar yajiu.jpg yajiu.png
这条命令是将yajiu.jpg和yajiu.png压缩成一个rar包
# rar a yajiu.rar *.jpg
这条命令是将所有.jpg的文件压缩成一个rar包
# rar a yajiu.rar yajiu
这条命令是将文件夹yajiu压缩成一个rar包
# unrar e yajiu.rar
这条命令是将yajiu.rar中的所有文件解压出来
yajiu@yajiu-desktop:~$ cd 图片
yajiu@yajiu-desktop:~/图片$ rar a yajiu.rar yajiu.jpg yajiu.png
RAR 3.80 beta 2 Copyright (c) 1993-2008 Alexander Roshal 16 Jun 2008
Shareware version Type RAR -? for help
Evaluation copy. Please register.
Creating archive yajiu.rar
Adding yajiu.jpg OK
Adding yajiu.png OK
Done
yajiu@yajiu-desktop:~/图片$ rar a yajiu.rar *.jpg
RAR 3.80 beta 2 Copyright (c) 1993-2008 Alexander Roshal 16 Jun 2008
Shareware version Type RAR -? for help
Evaluation copy. Please register.
Creating archive yajiu.rar
Adding 1.jpg OK
Adding 2.jpg OK
Done
yajiu@yajiu-desktop:~/图片$ rar a yajiu.rar yajiu
RAR 3.80 beta 2 Copyright (c) 1993-2008 Alexander Roshal 16 Jun 2008
Shareware version Type RAR -? for help
Evaluation copy. Please register.
Creating archive yajiu.rar
Adding yajiu/yajiu.zip OK
Adding yajiu/yajiu.jpg OK
Adding yajiu/yajiu.rar OK
Adding yajiu/yajiu.7z OK
Adding yajiu/yajiu.png OK
Adding yajiu OK
Done
yajiu@yajiu-desktop:~/图片$ unrar e yajiu.rar
UNRAR 3.80 beta 2 freeware Copyright (c) 1993-2008 Alexander Roshal
Extracting from yajiu.rar
1.jpg already exists. Overwrite it ?
[Y]es, [N]o, [A]ll, n[E]ver, [R]ename, [Q]uit Y
Extracting 1.jpg OK
7a008fc287fe680c0ff477e9.jpg already exists. Overwrite it ?
[Y]es, [N]o, [A]ll, n[E]ver, [R]ename, [Q]uit Y
Extracting 2.jpg OK
All OK
yajiu@yajiu-desktop:~/图片$
原文链接：http://hi.baidu.com/zgyz/blog/item/f7ef29085c90d4d663d98665.html
2)对于.7z
支持 7Z,ZIP,Zip64,CAB,RAR,ARJ,GZIP,BZIP2,TAR,CPIO,RPM,ISO,DEB 压缩文件格式
安装： sudo apt-get install p7zip p7zip-full p7zip-rar
# 7z a yajiu.7z yajiu.jpg yajiu.png
这条命令是将yajiu.jpg和yajiu.png压缩成一个7z包
# 7z a yajiu.7z *.jpg
这条命令是将所有.jpg的文件压缩成一个7z包
# 7z a yajiu.7z yajiu
这条命令是将文件夹yajiu压缩成一个7z包
# 7z e yajiu.7z
这条命令是将yajiu.7z中的所有文件解压出来，e是解压到当前路径
# 7z x yajiu.7z
这条命令是将yajiu.7z中的所有文件解压出来，x是解压到压缩包命名的目录下
yajiu@yajiu-desktop:~$ cd 图片
yajiu@yajiu-desktop:~/图片$ 7z a yajiu.7z yajiu.jpg yajiu.png
7-Zip (A) 4.58 beta Copyright (c) 1999-2008 Igor Pavlov 2008-05-05
p7zip Version 4.58 (locale=zh_CN.UTF-8,Utf16=on,HugeFiles=on,2 CPUs)
Scanning
Creating archive yajiu.7z
Compressing yajiu.jpg
Compressing yajiu.png
Everything is Ok
yajiu@yajiu-desktop:~/图片$ 7z a yajiu.7z *.jpg
7-Zip (A) 4.58 beta Copyright (c) 1999-2008 Igor Pavlov 2008-05-05
p7zip Version 4.58 (locale=zh_CN.UTF-8,Utf16=on,HugeFiles=on,2 CPUs)
Scanning
Creating archive yajiu.7z
Compressing 1.jpg
Compressing 2.jpg
Everything is Ok
yajiu@yajiu-desktop:~/图片$ 7z a yajiu.7z yajiu
7-Zip (A) 4.58 beta Copyright (c) 1999-2008 Igor Pavlov 2008-05-05
p7zip Version 4.58 (locale=zh_CN.UTF-8,Utf16=on,HugeFiles=on,2 CPUs)
Scanning
Creating archive yajiu.7z
Compressing yajiu/yajiu.7z
Compressing yajiu/yajiu.rar
Compressing yajiu/yajiu.zip
Compressing yajiu/yajiu.jpg
Compressing yajiu/yajiu.png
Everything is Ok
yajiu@yajiu-desktop:~/图片$ 7z x yajiu.7z
7-Zip 4.58 beta Copyright (c) 1999-2008 Igor Pavlov 2008-05-05
p7zip Version 4.58 (locale=zh_CN.UTF-8,Utf16=on,HugeFiles=on,2 CPUs)
Processing archive: yajiu.7z
file 1.jpg
already exists. Overwrite with
1.jpg?
(Y)es / (N)o / (A)lways / (S)kip all / A(u)to rename / (Q)uit? Y
Extracting 1.jpg
file 2.jpg
already exists. Overwrite with
2.jpg?
(Y)es / (N)o / (A)lways / (S)kip all / A(u)to rename / (Q)uit? Y
Extracting 2.jpg
Everything is Ok
Files: 2
Size: 112564
Compressed: 96228
原文链接：http://hi.baidu.com/zgyz/blog/item/f7ef29085c90d4d663d98665.html
