rar.txt

linux下面使用的rar 解压缩的东西

                             User's Manual
                             ~~~~~~~~~~~~~
                     RAR 2.90 32-bit console version
                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

                       =-=-=-=-=-=-=-=-=-=-=-=-=-=-
                       Welcome to the RAR Archiver!
                       -=-=-=-=-=-=-=-=-=-=-=-=-=-=

 Introduction
 ~~~~~~~~~~~~

    RAR is a powerful tool which allows you to manage and control archive
  files. The archive is usually a regular file, which name has a ".rar"
  suffix.

  RAR features include:-

    *  Highly sophisticated, original compression algorithm
    *  Special compression algorithm optimized for multimedia data
    *  Better compression than similar tools, using 'solid' archiving
    *  Authenticity verification (registered version only)
    *  Self-extracting archives and volumes (SFX)
    *  Ability to recover physically damaged archives
    *  Locking, password, file order list, file security & more ...


 Configuration file
 ~~~~~~~~~~~~~~~~~~

  RAR for Unix and BeOS read configuration information from the file
  .rarrc in the user's home directory (stored in HOME environment variable)
  or in /etc directory.

  RAR for Windows reads configuration information from the file rar.ini,
  placed in the same directory as the rar.exe file.

  This file may contain the following string:

  switches=<any RAR switches, separated with a space>


 Environment variable
 ~~~~~~~~~~~~~~~~~~~~

    Default parameters may be added to the RAR command line by establishing
    an environment variable "RAR".

    For instance, in UNIX following lines may be added to your profile:

      RAR='-s -md1024'
      export RAR

    RAR will use this string as default parameters in the command line and
    will create "solid" archives with 1024 KB sliding dictionary size.

    RAR handles options with priority as following:

       command line switches                   highest priority
       switches in the RAR variable            lower priority
       switches saved in configuration file    lowest priority


 Log file
 ~~~~~~~~

  If the switch -ilog is specified in the command line or configuration
  file, RAR will write informational messages, concerning errors
  encountered while processing archives, to a log file.  In Unix and BeOS
  this file is named .rarlog and placed in the user's home directory.
  In Windows it is named rar.log and placed in the same directory as
  the rar.exe file.


 The file order list for solid archiving - rarfiles.lst
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  rarfiles.lst contains user-defined file list which tells RAR
  the order to add files to a solid archive. It may contain file
  names, wildcards and special entry - $default. The default
  entry defines the place in order list for files not matched
  with other entries in this file. The comment character is ';'.

  In Windows this file should be placed in the same directory as RAR,
  in Unix and BeOS - to the user's home directory or to /etc.

  Tips to provide improved compression and speed of operation:

  - similar files should be grouped together in the archive;
  - frequently accessed files should be placed at the beginning.


 RAR command line syntax
 ~~~~~~~~~~~~~~~~~~~~~~~

 Syntax

    RAR <command>  [ -<switches> ]  <archive>  [ <@listfiles...> ]
        [ <files...> ]  [ <path_to_extract\> ]

 Description

    Command line options (commands and switches) provides control of
    creating and managing archives with RAR. The command is a string (or a
    single letter) which commands RAR to perform a corresponding action.
    Switches are designed to modify the way RAR performs the action. Other
    parameters are archive name and files to be archived into or extracted
    from the archive.

    Listfiles are plain text files contained names of files to process.
    File names should start at the first column. It is possible to
    put comments to the listfile after // characters. For example,
    you may create backup.lst containing the following strings:

    c:\work\doc\*.txt         //backup text documents
    c:\work\image\*.bmp       //backup pictures
    c:\work\misc

    and then run:

       rar a backup @backup.lst

    If you wish to read file names from stdin (standard input),
    specify the empty listfile name (just @).

    You may specify both usual file names and list files in the same
    command line. If neither files nor listfiles are specified,
    then *.* is implied and RAR will process all files

    In a UNIX environment you need to quote wildcards to avoid them being
    processed by RAR itself. For example, this command will extract
    *.asm files from RAR archives in current path:

       rar e '*.rar' '*.asm'


    Command could be any of the following:

    a       Add files to archive.

            Example:

            create or update existent archive myarch, adding all files
            in the current directory

            rar a myarch


    c       Add archive comment. Comments are displayed while the archive is
            being processed. Comment length is limited to 62000 bytes

            Examples:

            rar c distrib.rar

            Also comments may be added from a file:

            rar c -zinfo.txt dummy


    cf      Add files comment. File comments are displayed when the 'v'
            command is given. File comment length is limited to 32767 bytes.

            Example:

            rar cf bigarch *.txt


    cw      Write archive comment to specified file.

            Example:

            rar cw oldarch comment.txt


    d       Delete files from archive. Note, if the processing of this
            command resulted in removing all the files from the archive, the
            empty archive would removed.


    e       Extract files to current directory.


    f       Freshen files in archive. Updates those files changed since they
            were packed to the archive. This command will not add new files
            to the archive.


    k       Lock archive. Any command which intends to change the archive
            will be ignored.

            Example:

            rar k final.rar


    l[t]    List contents of archive [technical]. Files are listed as with
            the 'v' command with the exception of the file path. i.e. only
            the file name is displayed. Optional technical information is
            displayed when 't' modifier is used.


    m[f]    Move to archive [files only]. Moving files and directories
            results in the files and directories being erased upon
            successful completion of the packing operation. Directories will
            not be removed if 'f' modifier is used and/or '-ed' switch is
            applied.


    p       Print file to stdout.


    r       Repair archive. Archive repairing is performed in two stages.
            First, the damaged archive is searched for a recovery record
            (see 'rr' command). If the archive contains a recovery record
            and if the portion of the damaged data is continuous and less
            than N*512 bytes, where N is number of recovery sectors placed
            into the archive, the chance of successful archive
            reconstruction is very high. When this stage has completed, a
            new archive will be created, called _RECOVER.RAR.

            If a broken archive does not contain a recovery record or if
            the archive is not completely recovered due to major damage, a
            second stage is performed. During this stage only the archive
            structure is reconstructed and it is impossible to recover
            files which fail the CRC validation, it is still possible to
            recover undamaged files which were inaccessible due to the
            broken archive structure. Mostly this is useful for non-solid
            archives.

            When the second stage is completed, the reconstructed archive
            will be saved as _RECONST.RAR.

            While the recovery is in progress, RAR may prompt the user for
            assistance when a suspicious file is detected.

                      Suspicious entry

              Name:  <possibly filename>
              Size:  <size>    Packed: <compressed size>

                      Add it: Yes/No/All

            Answer 'y' to add this entry to the file _RECOVER.RAR.

            Example:

            rar r buggy.rar


    rr[N]   Add data recovery record. Optionally, redundant information
            (recovery record) may be added to an archive.  This will cause
            a small increase of the archive size and helps to recover
            archived files in case of floppy disk failure or data losses of
            any other kind. A recovery record contains up to 32768 recovery
            sectors. The number of sectors may be specified directly in the
            'rr' command (N = 1, 2 .. 32768) or if it is not specified by the
            user it will be selected automatically according to the archive
            size: a size of the recovery information will be about 1%
            of the total archive size, usually allowing the recovery of
            up to 0.6% of the total archive size of continuously damaged data.

            It is also possible to specify the recovery record size in
            percents to the archive size. Just append the percent character
            to the command parameter. For example:

            rar rr3% arcname

            If data are damaged continuously then each rr-sector helps to
            recover 512 bytes of damaged information. This value may be
            lower in cases of multiple damage.

            The size of the recovery record may be approximately determined
            by the formula <archive size>/256 + <number of recovery
            sectors>*512 bytes.


    s[name] Convert archive to SFX. The archive is merged with SFX-module
            (using a module in file default.sfx or specified in the switch).
            In the Windows version default.sfx should be placed in the
            same directory as the rar.exe, in Unix and BeOS - in the user's
            home directory, in /usr/lib or /usr/local/lib.

    s-      Remove SFX module from the already existing SFX archive.
            RAR creates a new archive without SFX module, the original
            SFX archive is not deleted.

    t       Test archive files. This command performs a dummy file
            extraction, writing nothing to the output stream, in order to
            validate the specified file(s).

            Examples:

            Test archives in current directory:

            rar t *

            or for Unix:

            rar t '*'

            User may test archives in all sub-directories, starting
            with the current path:

            rar t -r *

            or for Unix:

            rar t -r '*'


    u       Update files in archive. Adds files not already in the archive
            and updates files changed since they were packed to the archive.


    v[t]    Verbosely list the contents of archive [technical].
            Files are listed using the format: full pathname, file comment,
            original and compressed size, compression ratio, last update
            date and time, attributes, CRC, compression method and minimum
            RAR version required to extract. Optional technical information
            is displayed when 't' modifier is used.

            To list the contents of all archive volumes, use an asterisk
            ('*') in place of the archive file extension or use the '-v'
            switch.

            Example:

            direct archive content list (technical) to a file

            rar vt bambam >bambam.lst


    x       Extract files with full path.

            Example:

            rar x -av- -c- dime 10cents.txt

            extract specified file to current path. AV check and comment
            show are disabled.


    Switches (used in conjunction with a command):


    -?      Display help on commands and switches. The same as when none
            or an illegal command line option is entered.


    --      Stop switches scanning

            This switch tells to RAR that there is no more switches
            in the command line. It could be useful, if either archive
            or file name starts from '-' character. Without '--' switch
            such name would be treated as switch.