dar_cp - 'cp' clone command that is able to copy data located after an I/O error

http://dar.linux.free.fr/
       Denis Corbin
       France
       Europe

3rd Berkeley Distribution                        June 19th, 2022                                       DAR_CP(1)

dar_cp is similar to the standard 'cp' command, except it does not stop copying when an I/O error is met.
       Instead,  it skips a bit further and continues to copy the rest of the file, as much as possible, filling
       the gaps by zeroed bytes.

       dar_cp only accepts full filename (not directory) as argument. The reason of its existence in dar package
       is that you need it if you use Parchive with dar and have a corruption on a CD-R or any  other  read-only
       medium.  You  need to copy the corrupted slice on a read-write filesystem, for Parchive be able to repair
       it using slice associated redundancy files.

dar_cp exists with the following codes:

       0         upon normal execution (be some corrupted parted skipped or not)

       1         syntax error on command-line

       2         could not open source or destination files

       3         any other system error met during the copy

       5         when some data could not be copied due to I/O error

http://sourceforge.net/p/dar/bugs/

       dar_cp - 'cp' clone command that is able to copy data located after an I/O error

       -h                  Displays help usage.

       -V                  Displays version information.

       -f                  without -f option, dar_cp will abort if the  destination  file  exists,  this  is  to
                           prevent human error. However it may be useful to have a special device as destination
                           like  when  facing  a  disk  corruption  in  a unused block. dar_cp can then copy the
                           content of this disk to another one of equal or larger size. But  in  that  case  the
                           destination is also a special device and has to exists before dar_cp runs, where from
                           the  need  of  -f  option.  Once  the disk copy has finished, one can then eventually
                           resize partitions and file-systems to leverage the new larger disk.

dar(1), dar_xform(1), dar_manager(1), dar_slave(1), dar_split(1)

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

       dar_cp [-f] <source file> <destination file>

       dar_cp -h

       dar_cp -V