Provided by: p7zip-full_9.20.1~dfsg.1-4_i386 bug


       7z - 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
       program supports  7z  (that  implements  LZMA  compression  algorithm),
       LZMA2,  XZ,  ZIP, Zip64, CAB, RAR (if the non-free p7zip-rar package is
       installed), ARJ, GZIP, BZIP2, TAR,  CPIO,  RPM,  ISO,  most  filesystem
       images  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     (see     /usr/share/doc/p7zip-
              full/DOCS/MANUAL/switches/method.htm for a list of methods)

              7z  format  only : enables or disables archive header encryption
              (Default : off)

              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

       -so    Write data to StdOut (eg: % echo foo | 7z a dummy -tgzip -si -so
              > /dev/null)

       -slt   Sets technical mode for l (list) command

              Type  of  archive  (7z,  zip,  gzip,  bzip2 or tar. 7z format is

              Create volumes

              Update options

              Set Working directory

              Exclude filenames

       -y     Assume Yes on all queries


       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

              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
        - 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")


       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)


       7za(1), 7zr(1), bzip2(1), gzip(1), zip(1)

HTML Documentation



       Written for Debian by Mohammed Adnene Trojette.