rar.txt

解压软件

    -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.


    -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 added
            to archive.

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

            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


    -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.


    -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.


    -mc<par>
            Set advanced compression parameters.

            This switch is intended mainly for benchmarking and
            experiments. In the real environment it is usually better
            to allow RAR to select optimal parameters automatically.
            Please note that improper use of this switch may lead
            to very serious performance and compression loss, so use
            it only if you clearly understand what you do.

            It has the following syntax:

            -mc[param1][:param2][module][+ or -]

            where <module> is the one character field denoting a part
            of the compression algorithm, which has to be configured.

            It may have the following values:

              A       - audio compression;
              C       - true color (RGB) data compression;
              D       - delta compression;
              E       - 32-bit x86 executables compression;
              I       - 64-bit Intel Itanium executables compression;
              T       - text compression.

            '+' sign at the end of switch applies the selected algorithm
            module to all processed data, '-' disables the module at all.
            If no sign is specified, RAR will choose modules automatically,
            based on data and the current compression method.

            Switch -mc- disables all optional modules and allows only
            the general compression algorithm.

            <Param1> and <Param2> are module dependent parameters
            described below.

            Audio compression, delta compression:

            <Param1> is a number of byte channels (can be 1 - 31).
            RAR splits multibyte channels to bytes, for example,
            two 16-bit audio channels are considered by RAR as four
            channels one byte each.

            <Param2> is ignored.


            32-bit x86 Intel executables compression,
            64-bit Intel Itanium executables compression,
            true color (RGB) data compression:

            <Param1> and <Param2> are ignored.


            Text compression: 

            <Param1> is the order of PPM algorithm (can be 2 - 63).
            Usually a higher value slightly increases the compression ratio
            of redundant data, but only if enough memory is available
            to PPM. In case of lack of memory the result may be negative.
            Higher order values decrease both compression and decompression
            speed.

            <Param2> is memory in megabytes allocated for PPM (1-128).
            Higher values may increase the compression ratio, but note
            that PPM uses the equal memory size both to compress and
            decompress, so if you allocate too much memory when creating