解压过程错误：
[root@vmbbak yum]# unzip RHEL_5.7\ x86_64\ DVD-1.zip
error: Zip file too big (greater than 4294959102 bytes)
Archive: RHEL_5.7 x86_64 DVD-1.zip
warning [RHEL_5.7 x86_64 DVD-1.zip]: 2776688134 extra bytes at beginning or within zipfile
(attempting to process anyway)
error [RHEL_5.7 x86_64 DVD-1.zip]: start of central directory not found;
zipfile corrupt.
(please check that you have transferred or created the zipfile in the
appropriate BINARY mode and that you have compiled UnZip properly)
解决办法：
有配置yum可以直接安装:yum –y install p7zip
（如果提示找不到资源,则要自己下载编译安装,命令如:）
wget http://nchc.dl.sourceforge.net/sourceforge/p7zip/p7zip_4.65_src_all.tar.bz2
tar -xjvf p7zip_4.65_src_all.tar.bz2
cd p7zip_4.65
make && make install
解压命令：
进入zip文件所在文件夹，运行：
7za x xxx.zip
参数e是解压到当前文件夹。
7za命令详解：
