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NAME

       zerofill - clear unused disk space and blank devices.

SYNOPSIS

       zerofill [options] [devices] ...

DESCRIPTION

       This  command is a relative of nullfile.  Like nullfile, it can be used
       to write all unused disk space with '0', thereby  making  file  systems
       that  are  stored  on  virtual  machines  easier to pack.  In addition,
       zerofill can fill unused disk space with random  data  before  zeroing,
       which  can  be  useful  to  remove  forensic  trace  of  deleted files.
       Finally, zerofile can be told to operate on and zero  (erase)  complete
       disk devices.

OPTIONS

       --random=count
              Number of passes to use writing random data before wiping data.

       --help Outputs help screen for the user.

AUTHOR

       zerofill was written by David Sugar <dyfet@gnutelephony.org>.

REPORTING BUGS

       Report bugs to bug-commoncpp@gnu.org or bugs@gnutelephony.org.

COPYRIGHT

       Copyright © 2010-2014 David Sugar, Tycho Softworks.
       This is free software; see the source for copying conditions.  There is
       NO warranty; not even for MERCHANTABILITY or FITNESS FOR  A  PARTICULAR
       PURPOSE.



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