Manual dla 7z

P7ZIP(1) P7ZIP(1)

7-Zip - A file archiver with highest compression ratio

7z [adeltux] [-] [SWITCH] <<ARCHIVE_NAME>> <<ARGUMENTS>>......

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.

a Add

d Delete

e Extract

l List

t Test

u Update

x eXtract with full paths

Include archives

eXclude archives

-bd Disable percentage indicator

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')

Set Compression Method

Set Output directory

Set Password

Recurse subdirectories (CAUTION: this flag does not do what you
think, avoid using it)

Create SFX archive

-si Read data from StdIn (eg: tar cf - directory | 7z a -si direc-

-so Write data to StdOut (eg: 7z x -so directory.tar.7z | tar xf -)

-slt Sets technical mode for l (list) command

Type of archive

Create volumes

Update options

Set Working directory

Exclude filenames

-y Assume Yes on all queries

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-
- 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")

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

lzma method

-mx=9 level of compression = 9 (Ultra)

number of fast bytes for LZMA = 64

dictionary size = 32 megabytes

-ms=on solid archive = on

7z a -sfx archive..exe dir1
add all files from directory "dir1" to SFX archive archive.exe
(Remark : SFX archive MUST end with ".exe")

You will find more examples in /usr/share/doc/p7zip/DOCS/MANUAL.

7za(1) 7zr(1)

Written for Debian by Mohammed Adnene Trojette.

Mohammed Adnene Trojette October 31 2004 P7ZIP(1)