rar.txt

是linux下面使用的安全的一种可以启动的内河

            as the archive name, for example, 'rar rc backup.part03.rar'

            Read 'rv' command description for information about
            recovery volumes.


    rn      Rename archived files.

            The command syntax is:

            rar rn <arcname> <srcname1> <destname1> ... <srcnameN> <destnameN>

            For example, the following command:

            rar rn data.rar readme.txt readme.bak info.txt info.bak

            will rename readme.txt to readme.bak and info.txt to info.bak
            in the archive data.rar.

            It is allowed to use wildcards in the source and destination
            names for simple name transformations like changing file
            extensions. For example:

            rar rn data.rar *.txt *.bak

            will rename all *.txt files to *.bak.

            RAR does not check if the destination file name is already
            present in the archive, so you need to be careful to avoid
            duplicated names. It is especially important when using
            wildcards. Such a command is potentially dangerous, because
            a wrong wildcard may corrupt all archived names.


    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 524288 recovery
            sectors. The number of sectors may be specified directly in the
            'rr' command (N = 1, 2 .. 524288) 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
            percent to the archive size. Just append the percent character
            to the command parameter. For example:

            rar rr3% arcname

            Note that if you run this command from .bat or .cmd file,
            you need to use rr3%% instead of rr3%, because the command
            processor treats the single '%' character as the start of
            a batch file parameter. You may also use 'p' instead of '%',
            so 'rr3p' will work too.

            If data is 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.


    rv[N]   Create recovery volumes (.rev files), which can be later
            used to reconstruct missing and damaged files in a volume
            set. This command makes sense only for multivolume archives
            and you need to specify the name of the first volume
            in the set as the archive name. For example:

            rar rv3 data.part01.rar

            This feature may be useful for backups or, for example,
            when you posted a multivolume archive to a newsgroup
            and a part of subscribers did not receive some of the files.
            Reposting recovery volumes instead of usual volumes
            may reduce the total number of files to repost.

            Each recovery volume is able to reconstruct one missing
            or damaged RAR volume. For example, if you have 30 volumes
            and 3 recovery volumes, you are able to reconstruct any
            3 missing volumes. If the number of .rev files is less than
            the number of missing volumes, reconstructing is impossible.
            The total number of usual and recovery volumes must not
            exceed 255.

            Original RAR volumes must not be modified after creating
            recovery volumes. Recovery algorithm uses data stored both
            in REV files and in RAR volumes to rebuild missing RAR volumes.
            So if you modify RAR volumes, for example, lock them, after
            creating REV files, recovery process will fail.

            The optional <N> parameter specifies a number of recovery
            volumes to create and must be less than the total number
            of RAR volumes in the set. You may also append a percent
            character to this parameter, in such case the number of
            creating .rev files will be equal to this percent taken
            from the total number of RAR volumes. For example:

            rar rv15% data.part01.rar

            RAR reconstructs missing and damaged volumes either when
            using 'rc' command or automatically, if it cannot locate
            the next volume and finds the required number of .rev files
            when unpacking.

            Original copies of damaged volumes are renamed to *.bad
            before reconstruction. For example, volname.part03.rar
            will be renamed to volname.part03.rar.bad.
            

    s[name] Convert archive to SFX. The archive is merged with a 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 - 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 yet in the archive
            and updates files that have been changed since they were packed
            into the archive.


    v[t,b]  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
            (host OS, solid flag and old file version flag) is displayed
            when 't' modifier is used. Modifier 'b' forces RAR to output
            only bare file names without any additional information.

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

            Example:

            1) list contents of system.rar archive (technical mode)
               and redirect output to file techlist.lst

               rar vt system >techlist.lst

            2) list contents of tutorial.rar archive (bare file names mode)

               rar vb tutorial


    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 are no more switches
            in the command line. It could be useful, if either archive
            or file name starts from '-' character. Without '--' switch
            such a name would be treated as a switch.

            Example:

            add all files from the current directory to the solid archive
            '-StrangeName'

            RAR a -s -- -StrangeName

    -ac     Clear Archive attribute after compression or extraction
            (Windows version only).


    -ad     Append archive name to destination path.

            This option may be useful when unpacking a group of archives.
            By default RAR places files from all archives in the same
            directory, but this switch creates a separate directory
            for files unpacked from each archive.

            Example:

            rar x -ad *.rar data\

            RAR will create subdirectories below 'data' for every unpacking
            archive.


    -ag[format]
            Generate archive name using the current date and time.

            Appends the current date string to an archive name when
            creating an archive. Useful for daily backups.

            Format of the appending string is defined by the optional
            "format" parameter or by "YYYYMMDDHHMMSS" if this parameter
            is absent. The format string may include the following
            characters:

            Y   - year
            M   - month
            MMM - month name as text string (Jan, Feb, etc.)
            W   - a week number (a week starts with Monday)
            A   - day of week number (Monday is 1, Sunday - 7)
            D   - day of month
            E   - day of year
            H   - hours
            M   - minutes (treated as minutes if encountered after hours)
            S   - seconds
            N   - archive number. RAR searches for already existing archive
                  with generated name and if found, increments the archive
                  number until generating a unique name.

            Each of format string characters listed above represents only
            one character added to archive name. For example, use WW for
            two digit week number or YYYY to define four digit year.

            If the first character in the format string is '+', positions
            of the date string and base archive name are exchanged,
            so a date will precede an archive name.

            The format string may contain optional text enclosed in '{'
            and '}' characters. This text is inserted into archive name.

            All other characters are added to an archive name without
            changes.

            If you need to update an already existing archive, be careful
            with -ag switch. Depending on the format string and time passed
            since previous -ag use, generated and existing archive names
            may mismatch. In this case RAR will create a new archive
            instead of updating the already existing.


            Examples:

            1) use the default YYYYMMDDHHMMSS format

               rar a -ag backup

            2) use DD-MMM-YY format

               rar a -agDD-MMM-YY backup

            3) use YYYYMMDDHHMM format, place date before 'backup'

               rar a -ag+YYYYMMDDHHMM backup

            4) use YYYY-WW-A format, include fields description

               rar a -agYYYY{year}-WW{week}-A{wday} backup

            5) use YYYYMMDD and the archive number. It allows to generate
               unique names even when YYYYMMDD format mask used more than
               once in the same day

               rar a -agYYYYMMDD-NN backup


    -ao     Add files with Archive attribute set
            (Windows version only).

            Example:

            add all disk C: files with Archive attribute set
            to the 'f:backup' and clear files Archive attribute

            rar a -r -ac -ao f:backup c:\*.*


    -ap     Set path inside archive. This path is merged to file
            names when adding files to an archive and removed
            from file names when extracting.

            For example, if you wish to add the file 'readme.txt'
            to the directory 'DOCS\ENG' of archive 'release',
            you may run:

            rar a -apDOCS\ENG release readme.txt

            or to extract 'ENG' to the current directory:

            rar x -apDOCS release DOCS\ENG\*.*


    -as     Synchronize archive contents

            If this switch is used when archiving, those archived files
            which are not present in the list of the currently added
            files, will be deleted from the archive. It is convenient to
            use this switch in combination with -u (update) to synchronize
            contents of an archive and an archiving directory.

            For example, after the command:

            rar a -u -as backup sources\*.cpp

            the archive 'backup.rar' will contain only *.cpp files