zerofill(1) [debian man page]

zerofill(1)							   GNU Telephony						       zerofill(1)

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.

COPYRIGHT

       Copyright (C) 2010 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 PARTICU-
       LAR PURPOSE.

GNU uCommon							   January 2010 						       zerofill(1)

scrub-files(1)							   GNU Telephony						    scrub-files(1)

NAME

       scrub-files - securely erase files by filling with random data first.

SYNOPSIS

       scrub [options] paths...

DESCRIPTION

       This  command  is  used	to securely erase files.  This is accomplished by filling the file with random data in pre-sized chunks.  Multiple
       passes of random data may also be used.	The pre-sized chunks are used to remove information about exact original file size.  Other options
       include	random	renaming of the original file before deletion and the use of truncation to break down meta-data on what blocks in the file
       system were originally associated with a securely deleted file.	This is specifically intended to make it harder to perform forensic analy-
       sis on securely erased files.

OPTIONS

       --blocksize size
	      Set  the	default  block size (in 1 k increments) for scrub-files to use when writing random data.  This effects both the final file
	      length, which will be aligned to the specified size, and the way the truncate option decomposes files.  The default is 1k.

       --follow
	      Dereference and follow symlinks, erasing the target file.

       --passes=count
	      The number of passes used when writing random data.  The default is 1 pass.

       --recursive
	      If argument is a directory, recursively scan directory and any subdirectory contents as arguments.

       --rename
	      Rename the file randomly before deletion to clear persistant inode data.

       --truncate
	      Decompose the file through truncation to break down file system page maps.

       --verbose
	      Display each file being processed to the console.

       --help Outputs help screen for the user.

AUTHOR

       scrub-files was written by David Sugar <dyfet@gnutelephony.org>.

REPORTING BUGS

       Report bugs to bug-commoncpp@gnu.org.

COPYRIGHT

       Copyright (C) 2010 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 PARTICU-
       LAR PURPOSE.

GNU uCommon							   January 2010 						    scrub-files(1)