首先，我得说几句，我第一次进行了实验。

压缩文件夹html

rar压缩   成绩5.18M

zip压缩  成绩5.06M

7z压缩   成绩870K

第一种，源代码编译安装

官网下载地址：http://www.7-zip.org/download.html

源文件项目地址：http://sourceforge.net/projects/p7zip/，眼下最新版为9.20.1。

运行下面命令下载安装：

wget http://nchc.dl.sourceforge.net/project/p7zip/p7zip/9.20.1/p7zip_9.20.1_src_all.tar.bz2

tar -jxvf p7zip_9.20.1_src_all.tar.bz2

cd p7zip_9.20.1

make

make install

最后一步make install后出现下面信息。即为安装完成

./install.sh /usr/local/bin /usr/local/lib/p7zip /usr/local/man /usr/local/share/doc/p7zip

- installing /usr/local/bin/7za

- installing /usr/local/man/man1/7z.1

- installing /usr/local/man/man1/7za.1

- installing /usr/local/man/man1/7zr.1

- installing /usr/local/share/doc/p7zip/README

- installing /usr/local/share/doc/p7zip/ChangeLog

- installing HTML help in /usr/local/share/doc/p7zip/DOCS

另外一种，rpm安装

下载地址：http://pkgs.repoforge.org/p7zip/，请以最新版为准。

在 CentOS 5.x 32位下安装7ZIP

wget http://pkgs.repoforge.org/p7zip/p7zip-9.20.1-1.el5.rf.i386.rpm

rpm -ivh p7zip-9.20.1-1.el5.rf.i386.rpm

在 CentOS 5.x 64位下安装7ZIP

wget http://pkgs.repoforge.org/p7zip/p7zip-9.20.1-1.el5.rf.x86_64.rpm

rpm -ivh p7zip-9.20.1-1.el5.rf.x86_64.rpm

在 CentOS 6.x 32位下安装7ZIP

wget http://pkgs.repoforge.org/p7zip/p7zip-9.20.1-1.el6.rf.i686.rpm

rpm -ivh p7zip-9.20.1-1.el6.rf.i686.rpm

在 CentOS 6.x 64位下安装7ZIP

wget http://pkgs.repoforge.org/p7zip/p7zip-9.20.1-1.el6.rf.x86_64.rpm

rpm -ivh p7zip-9.20.1-1.el6.rf.x86_64.rpm

第三种，yum安装

通过《在Centos 5.x或6.x上安装RHEL EPEL Repo》一文，安装RHEL EPEL Repo后，就可以使用yum安装7ZIP。

命令例如以下：

yum install -y p7zip

7-Zip (A) [64] 9.20  Copyright (c) 1999-2010 Igor Pavlov  2010-11-18

p7zip Version 9.20 (locale=zh_CN.UTF-8,Utf16=on,HugeFiles=on,1 CPU)

Usage: 7za <command> [<switches>...] <archive_name> [<file_names>...]

       [<@listfiles...>]

<Commands>

  a: Add files to archive

  b: Benchmark

  d: Delete files from archive

  e: Extract files from archive (without using directory names)

  l: List contents of archive

  t: Test integrity of archive

  u: Update files to archive

  x: eXtract files with full paths

<Switches>

  -ai[r[-|0]]{@listfile|!wildcard}: Include archives

  -ax[r[-|0]]{@listfile|!wildcard}: eXclude archives

  -bd: Disable percentage indicator

  -i[r[-|0]]{@listfile|!wildcard}: Include filenames

  -m{Parameters}: set compression Method

  -o{Directory}: set Output directory

  -p{Password}: set Password

  -r[-|0]: Recurse subdirectories

  -scs{UTF-8 | WIN | DOS}: set charset for list files

  -sfx[{name}]: Create SFX archive

  -si[{name}]: read data from stdin

  -slt: show technical information for l (List) command

  -so: write data to stdout

  -ssc[-]: set sensitive case mode

  -t{Type}: Set type of archive

  -u[-][p#][q#][r#][x#][y#][z#][!newArchiveName]: Update options

  -v{Size}[b|k|m|g]: Create volumes

  -w[{path}]: assign Work directory. Empty path means a temporary directory

  -x[r[-|0]]]{@listfile|!wildcard}: eXclude filenames