实验环境:
系统:AS5.2 内核2.6.18-92.el5
软件:p7zip_4.48
erico
2009-07-03
1.)下载安装7z软件(for linux)
cd /home/erico/ wget http://sourceforge.net/projects/p7zip/files/p7zip/p7zip_4.48_x86_linux_bin.tar.bz2 tar jxvf /home/erico/p7zip_4.48_x86_linux_bin.tar.bz2 cd /home/erico/p7zip_4.48 sh install.sh |
###安装完成,可以使用了
个人实验:
可以解压tar.bz2 压缩包,但是要解压两次(两次 7z x *.tar.bz2 7z x *.tar)
支持7z (即执行LZMA压缩算法) ,ZIP, CAB,ARJ,GZIP, BZIP2 ,TAR, CPIO, RPM和DEB格式
2.)解压7z压缩的文件
7z x *.7z |
3.)压缩文件(用密码加密)
7z a -p123456 test.7z /home/erico/test/ |
4.)解压带密码的压缩文件
7z x -p123456 test.7z |
5.)删除压缩包里的文件
7z d -p123456 test.7z #(该命令会把test.7z里面的文件全部删除,只保留test.7z这个空包文件) |
6.)压缩固定大小的包(分包)
7z a -p123456 -v1m test.7z /home/erico/test/ #(该命令行会将test目录打包成多个包,每个包大小都是1M,最后一个包<=1m) |
7.)解压分包
7z x -p123456 -o/home/test_dir/ test.7z.001 # (该命令会将解压出来的文件放到/home/test_dir/目录下,注意,解压分包时一定要解压第一个分包【test.7z.001】!) |
8.)保持文件目录路径和文件权限
一定要用root用户对目录压缩和解压,要不目录和文件的权限会改变! |
9.)看7z(man 7z)的官方说明。
Formatting page, please wait... P7ZIP(1) P7ZIP(1)
NAME 7-Zip - A file archiver with highest compression ratio
SYNOPSIS 7z [adeltux] [-] [SWITCH] ...
DESCRIPTION 7-Zip is a file archiver with the highest compression ratio. The pro- gram supports 7z (that implements LZMA compression algorithm), ZIP, CAB, ARJ, GZIP, BZIP2, TAR, CPIO, RPM and DEB formats. Compression ratio in the new 7z format is 30-50% better than ratio in ZIP format.
7z uses plugins to handle archives.
FUNCTION LETTERS a Add
d Delete
e Extract
l List
t Test
u Update
x eXtract 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
-l don't store symlinks; store the files/directories they point to (CAUTION : the scanning stage can never end because of recursive symlinks like 'ln -s .. ldir')
-m{Parameters} Set Compression Method
-mhe=on|off 7z format only : enables or disables archive header encryption (Default : off)
-o{Directory} Set Output directory
-p{Password} Set Password
-r[-|0] Recurse subdirectories (CAUTION: this flag does not do what you think, avoid using it)
-sfx[{name}] Create SFX archive
-si Read data from StdIn (eg: tar cf - directory | 7z a -si direc- tory.tar.7z)
-so Write data to StdOut (eg: 7z x -so directory.tar.7z | tar xf -)
-slt Sets technical mode for l (list) command
-t{Type} Type of archive (7z, zip, gzip, bzip2 or tar. 7z format is default)
-v{Size}[b|k|m|g] Create volumes
-u[-][p#][q#][r#][x#][y#][z#][!newArchiveName] Update options
-w[path] Set Working directory
-x[r[-|0]]]{@listfile|!wildcard} Exclude filenames
-y Assume Yes on all queries
DIAGNOSTICS 7-Zip returns the following exit codes:
0 Normal (no errors or warnings detected)
1 Warning (Non fatal error(s)). For example, some files cannot be read during compressing. So they were not com- pressed
2 Fatal error
7 Bad command line parameters
8 Not enough memory for operation
255 User stopped the process with control-C (or similar)
Backup and limitations DO NOT USE the 7-zip format for backup purpose on Linux/Unix because : - 7-zip does not store the owner/group of the file.
On Linux/Unix, in order to backup directories you must use tar : - to backup a directory : tar cf - directory | 7za a -si direc- tory.tar.7z - to restore your backup : 7za x -so directory.tar.7z | tar xf -
If you want to send files and directories (not the owner of file) to others Unix/MacOS/Windows users, you can use the 7-zip format.
example : 7za a directory.7z directory
Do not use "-r" because this flag does not do what you think.
Do not use directory/* because of ".*" files (example : "directory/*" does not match "directory/.profile")
EXAMPLE 1 7z a -t7z -m0=lzma -mx=9 -mfb=64 -md=32m -ms=on archive.7z dir1 adds all files from directory "dir1" to archive archive.7z using "ultra settings"
-t7z 7z archive
-m0=lzma lzma method
-mx=9 level of compression = 9 (Ultra)
-mfb=64 number of fast bytes for LZMA = 64
-md=32m dictionary size = 32 megabytes
-ms=on solid archive = on
EXAMPLE 2 7z a -sfx archive.exe dir1 add all files from directory "dir1" to SFX archive archive.exe (Remark : SFX archive MUST end with ".exe")
EXAMPLE 3 7z a -mhe=on -pmy_password archive.7z a_directory add all files from directory "a_directory" to the archive "archive.7z" (with data and header archive encryption on)
SEE ALSO 7za(1) 7zr(1) HTMLHelp(/usr/local/share/doc/p7zip/DOCS/MAN- UAL/index.htm)
AUTHOR Written for Debian by Mohammed Adnene Trojette.
Mohammed Adnene Trojette September 1 2006 P7ZIP(1)
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