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       dar_xform - disk archive "re-slicer"


       dar_xform [options] [<path>/]source [<path>/]destination

       dar_xform -h

       dar_xform -V


       dar_xform changes the size of slices of an existing archive.

       Source  is  the  basename  of  the existing archive, destination is the
       basename of the archive to be created. If source basename is  "-",  the
       archive  is  read  from  standard input. If the destination basename is
       "-", the archive is written to standard output and  -s  option  is  not


       -h                  displays help usage.

       -V                  displays version information.

       -b                  make  the  terminal  ring  when user interaction is
                           required (like for example the creation  of  a  new
                           slice when using the -p option)

       -s <number>         Size  of  the  slices  in  bytes.  If the number is
                           followed by k (or K), M, G, T or P the size  is  in
                           kilobytes,   megabytes,   gigabytes,  terabytes  or
                           petabytes respectively. Example: by  default  "20M"
                           means  20  megabytes  it  is  the  same  as  giving
                           20971520 as argument (see also  -aSI  and  -abinary
                           options).  If  -s is not present the backup will be
                           written to a single slice whatever the size of  the
                           backup  may  be  (there is probably some filesystem
                           limitation, thus you  might  expect  problems  with
                           file  size  over  2  gigabytes,  depending  on your

       -S <number>         -S gives the size of the first slice which  may  be
                           chosen  independently  of  the  size  of  following
                           slices. This option needs -s and  by  default,  the
                           size  of  the first slice is the same as the one of
                           the following slices.

       -p [<integer>]      pauses before writing to a new slice (this requires
                           -s).  By  default there is no pause, all slices are
                           output in the same directory, up to the end of  the
                           backup  or  until  the  filesystem is full. In this
                           later case, the user is informed  of  the  lack  of
                           disk  space  and dar stops for user interaction. As
                           soon as some disk space is available, the user  can
                           continue the backup. The optional integer that this
                           option can receive tells dar to only pause very ’n’
                           slice.  Giving  3  for ’n’ will make dar pause only
                           after slices 3, 6, 9 and so on. If this integer  is
                           not  specified, the behavior is as if ’1’ was given
                           as argument which makes dar pause after each slice.

       -n                  Do not allow overwriting of any slice.

       -w                  Do  not  warn  before overwriting slice. By default
                           (no -n and no -w)  overwriting  is  allowed  but  a
                           warning is issued before proceeding.

       -E <string>         the string is a command-line to be launched between
                           the slices of the destination archive.  See  dar(1)
                           man page (same option) for more informations.

       -F <string>         the string is a command-line to be launched between
                           the slices of the source archive.  See  dar(1)  man
                           page (same option) for more informations.

       -aSI[-unit[s]]      when using k M G T E Z Y prefixes to define a size,
                           use the SI meaning: multiple of  10^3  (a  Mega  is

       -abinary[-unit[s]]  when using k M G T E Z Y prefixes to define a size,
                           use  the  historical  computer   science   meaning:
                           multiple of 2^10  (a Mega is 1,048,576).

       -aSI  and  -abinary  can  be used several times, they affect all prefix
       which follow even those found in file included by -B option up  to  the
       next  -a... occurrence. Note that if in a file included by -B option an
       -abinary or -aSI is met, it affects all the following prefix even those
       outside  the  included files (for example in the following "-B some.dcf
       -s 1K" 1K may be equal to 1000 or 1024 depending on the presence of  an
       -aSI  or  -abinary  in  the  file  some.dcf.  By  default  (before  any
       -aSI/binary argument has been reached), binary interpretation of suffix
       is done (for compatibility with older versions).

       -Q                  Do  not  display  any  message  on  stderr when not
                           launched from a terminal (for example when launched
                           from  an  at  job  or  crontab).  Remains  that any
                           question to the user will be assumed a ’no’ answer,
                           which most of the time will abort the program.

       -j                  when  virtual  memory is exhausted, as user to make
                           room before trying to continue.  By  default,  when
                           memory is exhausted dar aborts.


       Dar  is not concerned by scrambling. It does not need to be aware of it
       to be able to change the slice scheme. Thus, it is not able to scramble
       a clear archive or unscramble an already scrambled archive.


       dar_xform uses the same exit status as dar does, see dar(1) man page.


       Any  signal sent to dar_xform will abort the program immediately, there
       is no way to have a proper termination before the end of the process


       dar(1), dar_slave(1), dar_manager(1), dar_cp(1)


       None actually.

       Denis Corbin