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Updated: Thursday, March 14, 2019
 
 

7zr (1)

Name

7zr - A file archiver with highest compression ratio

Synopsis

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

Description

7zr(1)                      General Commands Manual                     7zr(1)



NAME
       7zr - A file archiver with highest compression ratio

SYNOPSIS
       7zr [adeltux] [-] [SWITCH] <ARCHIVE_NAME> <ARGUMENTS>...

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.

       7zr is a stand-alone executable. 7zr handles less archive formats  than
       7z,  but does not need any others. 7zr is a "light-version" of 7za that
       only handles 7z 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   (see   /usr/share/doc/p7zip/DOC/MAN-
              UAL/switches/method.htm for a list of methods)

       -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 | 7zr a -si direc-
              tory.tar.7z)

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

       -slt   Sets technical mode for l (list) command

       -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  |  7zr  a  -si  direc-
       tory.tar.7z
        - to restore your backup : 7zr 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 : 7zr 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
       7zr 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
       7zr 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
       7zr a -mhe=on -pmy_password archive.7z a_directory
              add  all  files from directory "a_directory" to the archive "ar-
              chive.7z" (with data and header archive encryption on)


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       +---------------+------------------+
       |ATTRIBUTE TYPE | ATTRIBUTE VALUE  |
       +---------------+------------------+
       |Availability   | compress/p7zip   |
       +---------------+------------------+
       |Stability      | Uncommitted      |
       +---------------+------------------+
SEE ALSO
       7z(1), 7za(1), bzip2(1), gzip(1), zip(1)

HTML Documentation
       /usr/share/doc/p7zip/DOC/MANUAL/index.htm

AUTHOR
       Written for Debian by Mohammed Adnene Trojette.



NOTES
       This    software    was    built    from    source     available     at
       https://github.com/oracle/solaris-userland.    The  original  community
       source     was      downloaded      from       http://downloads.source-
       forge.net/p7zip/p7zip_16.02_src_all.tar.bz2

       Further information about this software can be found on the open source
       community website at http://p7zip.sourceforge.net/.



Mohammed Adnene Trojette       September 1 2006                         7zr(1)