rar.txt

是linux下面使用的安全的一种可以启动的内河

            from directory 'sources', all other files will be deleted
            from the archive. It looks similar to creating a new archive,
            but with one important exception: if no files are modified
            since the last backup, the operation is performed much faster
            than the creation of a new archive.


    -av     Put authenticity verification (registered versions only).
            RAR will put, in every new and updated archive, information
            concerning the creator, last update time and archive name.

            If an archive, containing authenticity verification, is being
            modified and this switch is not specified, the authenticity
            verification information will be removed.

            When extracting, testing, listing or updating an archive with
            the '-av' switch, RAR will perform integrity validation and
            display the message:

              Verifying authenticity information ...

            In the case of successful authenticity verification, the message
            'Ok', creator name and last update information will be
            displayed. In the case of authenticity verification failure, the
            message 'FAILED' will be displayed.

            The Authenticity Verification feature, '-av,' is recommended for
            use with archives in a software distribution environment.

            In order to enable the Authenticity verification feature, the
            program MUST be registered. Please contact your local
            distribution site or the world-wide distribution center.


    -av-    Disable authenticity verification checking or adding.


    -cfg-   Ignore configuration file and RAR environment variable.


    -cl     Convert file names to lower case.


    -cu     Convert file names to upper case.


    -c-     Disable comments show.


    -df     Delete files after archiving

            Move files to archive. This switch in combination with
            the command "A" performs the same action as the command "M".
           

    -dh     Open shared files

            Allows to process files opened by other applications
            for writing.

            This switch helps if an application allowed read access
            to file, but if all types of file access are prohibited,
            the file open operation will still fail.

            This option could be dangerous, because it allows
            to archive a file, which at the same time is modified
            by another application, so use it carefully.


    -ds     Do not sort files while adding to a solid archive.


    -ed     Do not add empty directories

            This switch indicates that directory records are not to be
            stored in the created archive. When extracting such archives,
            RAR creates non-empty directories basing on paths of files
            contained in them. Information about empty directories is
            lost. All attributes of non-empty directories except a name
            (access rights, streams, etc.) will be lost as well, so use
            this switch only if you do not need to preserve such information.

            If -ed is used with 'm' command or -df switch, RAR will not
            remove empty directories.


    -ee     Do not process extended attributes

            Disables saving and restoring extended file attributes.
            Only for OS/2 versions.


    -en     Do not add "end of archive" block

            By default, RAR adds an "end of archive" block to the end of
            a new or updated archive. It allows to skip external data like
            digital signatures safely, but in some special cases it may be
            useful to disable this feature. For example, if an archive
            is transferred between two systems via an unreliable link and
            at the same time a sender adds new files to it, it may be
            important to be sure that the already received file part will
            not be modified on the other end between transfer sessions.

            This switch cannot be used with volumes, because the end
            of archive block contains information important for correct
            volume processing. 


    -ep     Exclude paths from names. This switch enables files to be added
            to an archive without including the path information. This
            could, of course, result in multiple files existing in the
            archive with the same name.


    -ep1    Exclude base dir from names. Do not store the path entered in
            the command line.

            Example:

            all files and directories from the directory tmp will be added
            to the archive 'test', but the path in archived names will not
            include 'tmp\'

            rar a -ep1 -r test tmp\*

            This is equivalent to the commands:

            cd tmp
            rar a -r ..\test
            cd ..


    -ep2    Expand paths to full. Store full file paths (except a drive
            letter and leading path separator) when archiving.
    

    -ep3    Expand paths to full including the drive letter.
            Win32 version only.

            This switch stores full file paths including the drive
            letter if used when archiving. Drive separators (colons)
            are replaced by underscore characters.

            If you use -ep3 when extracting, it will change
            underscores back to colons and create unpacked files
            in their original directories and disks. If the user
            also specified a destination path, it will be ignored.

            This switch can help to backup several disks to the same
            archive. For example, you may run:

            rar a -ep3 -r backup.rar c:\ d:\ e:\

            to create backup and:

            rar x -ep3 backup.rar

            to restore it.

            But be cautious and use -ep3 only if you are sure that
            extracting archive does not contain any malicious files.
            In other words, use it if you have created an archive yourself
            or completely trust its author. This switch allows to overwrite
            any file in any location on your computer including important
            system files and should normally be used only for the purpose
            of backup and restore.


    -e[+]<attr>
            Specifies file exclude or include attributes mask.

            <attr> is a number in the decimal, octal (with leading '0')
            or hex (with leading '0x') format.

            By default, without '+' sign before <attr>, this switch
            defines the exclude mask. So if result of bitwise AND between
            <attr> and file attributes is nonzero, file would not be
            processed.

            If '+' sign is present, it specifies the include mask.
            Only those files which have at least one attribute specified
            in the mask will be processed.

            In Windows version is also possible to use symbols D, S, H,
            A and R instead of a digital mask to denote directories
            and files with system, hidden, archive and read-only attributes.
            The order in which the attributes are given is not significant.
            Unix version supports D and V symbols to define directory
            and device attributes.

            It is allowed to specify both -e<attr> and -e+<attr>
            in the same command line.

            Examples:

            1) archive only directory names without their contents

               rar a -r -e+d dirs

            2) do not compress system and hidden files:

               rar a -esh files

            3) do not extract read-only files:

               rar x -er files


    -f      Freshen files. May be used with archive extraction or creation.
            The command string "a -f" is equivalent to the command 'f', you
            could also use the switch '-f' with the commands 'm' or 'mf'. If
            the switch '-f' is used with the commands 'x' or 'e', then only
            old files would be replaced with new versions extracted from the
            archive.


    -fcu[file]
            Use Unicode text format when adding or writing archive comments.

            When adding a comment to archive, this switch modifies
            behavior of -z[file] switch forcing RAR to process
            the specified file as Unicode text. Such Unicode file
            must have FFFE or FEFF Unicode character in the beginning,
            otherwise RAR will ignore this switch and process the file
            as ASCII text. It is allowed to replace "-fcu -z[file]"
            combination with the single -fcu[file] switch.
            
            When using together with "cw" command, -fcu switch sets
            the format of output file to low endian Unicode text.


    -hp[p]  Encrypt both file data and headers.

            This switch is similar to -p[p], but switch -p encrypts
            only file data and leaves other information like file names
            visible. This switch encrypts all sensitive archive areas
            including file data, file names, sizes, attributes, comments
            and other blocks, so it provides a higher security level.
            Without a password it is impossible to view even the list of
            files in archive encrypted with -hp.

            Example:

            rar a -hpfGzq5yKw secret report.txt

            will add the file report.txt to the encrypted archive
            secret.rar using the password 'fGzq5yKw'


    -id[c,d,p,q]
            Disable messages.

            Switch -idc disables the copyright string.

            Switch -idd disables "Done" string at the end of operation.

            Switch -idp disables the percentage indicator.

            Switch -idq turns on the quiet mode, so only error messages
            and questions are displayed.

            It is allowed to use several modifiers at once,
            so switch -idcdp is correct.


    -ieml[.][addr]
            Send archive by email. Win32 version only.

            Attach an archive created or updated by the add command
            to email message. You need to have a MAPI compliant email
            client to use this switch (most modern email programs
            support MAPI interface).

            You may enter a destination email address directly
            in the switch or leave it blank. In the latter case you
            will be asked for it by your email program. It is possible
            to specify several addresses separated by commas or semicolons.

            If you append a dot character to -ieml, an archive will be
            deleted after it was successfully attached to an email.
            If the switch is used when creating a multivolume archive,
            every volume is attached to a separate email message.


    -ierr   Send all messages to stderr.


    -ilog[name]
            Log errors to file (registered version only).

            Write error messages to the file rar.log created in RAR
            directory. It is possible to specify another log file name
            instead of the default rar.log in the switch, for example,
            -ilogc:\log\backup.log. If the specifed name does not include
            the path, the log file will be created in the RAR directory.


    -inul   Disable all messages.


    -ioff   Turn PC off after completing an operation. The hardware must
            support the power off feature. Win32 version only.


    -isnd   Enable sound.


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


    -kb     Keep broken extracted files.

            RAR, by default, deletes files with CRC errors after
            extraction. The switch -kb specifies that files with
            CRC errors should not be deleted.


    -m<n>   Set compression method:

       -m0   store     do not compress file when adding to archive
       -m1   fastest   use fastest method (less compressive)
       -m2   fast      use fast compression method
       -m3   normal    use normal (default) compression method
       -m4   good      use good compression method (more
                       compressive, but slower)
       -m5   best      use best compression method (slightly more
                       compressive, but slowest)

            If this switch is not specified, RAR uses -m3 method
            (normal compression).

            By default, RAR uses only the general compression
            algorithm in -m1 and -m2 methods, advanced algorithms
            like audio and true color processing are enabled
            only in -m3..-m5 modes, the advanced text compression
            is activated only in -m4..-m5. This default can be
            overridden using -mc switch.