rar.txt

linux下用的解压缩软件

    -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
            include 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'


    -idp    Disable percentage indicator.

            May be useful when redirecting output to a file.


    -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 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 it
            will be asked by your email program. It is possible to
            specify several addresses separated with commas or
            semicolons.

            If you append a dot character to -ieml, an archive will be
            deleted after it was successfully attached to email.
            If the switch is used when creating a multivolume archive,
            every volume is attached to 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 path, the log file will be created in 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 usually it is 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,
            basing 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
            an archive, other people may have problems when decompressing
            it on a computer with less memory installed. Decompression
            will be still possible using virtual memory, but it may
            become very slow.


            Examples:

            1) switch -mc1a+ forces use of 8-bit mono audio compression
            for all data.

            2) switch -mc10:40t+ forces use of text compression
            algorithm for all data, sets the compression order to 10
            and allocates 40 MB memory.

            3) switch -mc12t sets the text compression order to 12,
            when the text compression is used, but leaves to RAR to
            decide when to use it.

            4) switches -mct- -mcd- disable text and delta compression.


    -md<n>  Select dictionary size <n> in KB. Must be 64, 128, 256, 512,
            1024, 2048 or 4096 or a letter 'a', 'b', 'c', 'd', 'e', 'f', 'g'
            respectively.

            The sliding dictionary is a special memory area used by the
            compression algorithm. If the size of the file being compressed
            (or the total files size in the case of a solid archive) is
            greater than the dictionary size, then increasing the dictionary
            size will generally increase compression ratio, decrease packing
            speed and increase memory requirements.

            RAR can reduce the dictionary size if it is significantly
            larger than size of source data. It helps to reduce memory
            requirements without decreasing compression.

            Default sliding dictionary size is 4096 KB.

            Example:

            RAR a -s -mdd sources *.asm
                or
            RAR a -s -md512 sources *.asm

            Will create a solid archive using a 512 KB dictionary.


    -ms[list]
            Specify file types to store.

            Specify file types, which will be stored without compression.
            This switch may be used to store already compressed files,
            what helps to increase archiving speed without noticeable loss
            in the compression ratio.

            Optional <list> parameter defines the list of file extensions
            separated with a semicolon. For example, -msrar;zip;jpg will
            force RAR to store without compression all RAR and ZIP
            archives and JPG images. It is also allowed to specify wildcard
            file masks in the list, so -ms*.rar;*.zip;*.jpg will work too.

            If <list> is not specified, -ms switch will use the default
            set of extensions, which includes the following file types:

            ace, arj, bz2, cab, gz, jpeg, jpg, lha, lzh, mp3,
            rar, zip, taz, tgz, z


    -ol     Save symbolic links as the link instead of the file.
            Unix version only.


    -os     Save NTFS streams. Win32 version only.

            This switch has meaning only for NTFS file system under
            Windows NT and allows to save alternative data streams
            associated with a file. It is especially important under
            Windows 2000 and XP, which use streams to keep some file
            dependent information like file descriptions. If you use
            RAR to backup your NTFS disks, it is recommended to specify
            this switch.


    -ow     Use this switch when archiving to save file security
            information and when extracting to restore it.

            Unix RAR version saves file owner and group when using
            this switch.

            Win32 version stores owner, group, file permissions and
            audit information, but only if you have necessary privileges
            to read them. Note that only NTFS file system supports
            file based security under Windows.

    -o+     Overwrite existing files.


    -o-     Do not overwrite existing files.


    -p[p]   Encrypt files with the string <p> as password while archiving.
            The password is case-sensitive. If you omit the password on the
            command line, you will be prompted with message "Enter password".

            Example:

            rar a -pmyhoney secret1 *.txt

            add files *.txt and encrypt them with password "myhoney".


    -p-     Do not query password


    -r      Recurse subdirectories. May be used with commands:
            a, u, f, m, x, e, t, p, v, l, c, cf and s.

            When used with the commands 'a', 'u', 'f', 'm' will process
            files in all sub-directories as well as the current working
            directory.

            When used with the commands x, e, t, p, v, l, c, cf or s will
            process all archives in sub-directories as well as the current
            working directory.


    -r0     Similar to -r, but when used with the commands 'a', 'u', 'f',
            'm' will recurse subdirectories only for those names, which
            include wildcard characters '*' and '?'


    -ri<p>[:<s>]
            Set priority and sleep time. Available only in RAR for Windows.
            This switch is used to regulate system load by RAR in a
            multitasking environment. The possible task priority values are
            from 0 to 15. When <p> is equal to 0, the default task priority
            is used, 1 corresponding to the lowest task priority, 15 - to
            the highest. The sleep time <s> is a value from 0 to 1000
            (milliseconds). This is the period of time that RAR will give
            back to system after every read or write during the packing or
            unpacking operation. The sleep time setting is useful when
            several tasks with the same priority are running in the system.

            Example:

            execute RAR with default priority and 10 ms of sleep after
            each read or write

            rar a -r -sfx -ri0:10 backup *.*


    -rr[N]  Add a data recovery record. This switch is used when creating or
            modifying archive to add a data recovery record to the archive.
            See the 'rr[N]' command description for details.


    -rv[N]  Create recovery volumes. This switch is used when creating
            a multivolume archive to generate recovery volumes.
            See the 'rv[N]' command description for details.


    -s      Create solid archive. Solid is a special archive type. Please
            refer to the appendix "Glossary" for further information.

            Example:

            create solid archive sources.rar with 512 KB dictionary,
            recursing all directories, starting with the current directory.
            Add only .asm files:

            rar a -s -md512 sources.rar *.asm -r


    -s<N>   Create solid groups using file count

            Similar to -s, but reset solid statistics after compressing
            <N> files. Usually decreases compression, but also
            decreases losses in case of solid archive damages.


    -se     Create solid groups using extension

            Similar to -s, but reset solid statistics if file extension
            is changed. Usually decreases compression, but also
            decreases losses from solid archive damages.


    -sv     Create independent solid volumes

            By default RAR tries to reset solid statistics as soon
            as possible when starting a new volume, but only 
            if a lot enough data was packed after a previous reset
            (at least a few megabytes).

            This switch forces RAR to ignore packed data size and attempt
            to reset statistics for volumes of any size. It decreases
            compression, but increases chances to extract a part of data 
            if one of solid volumes in volume set was lost or damaged.

            Note that sometimes RAR cannot reset statistics even
            using this switch. For example, it cannot be done when 
            compressing one large file split between several volumes.
            RAR is able to reset solid statistics only between separate 
            files, but not inside of single file.

            Ignored, if used to create non-volume archive.


    -sv-    Create dependent solid volumes

            Disables to reset solid statistics between volumes.

            It slightly increases compression, but significantly reduces 
            chances to extract a part of data if one of solid volumes 
            in volume set was lost or damaged.