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)
Check Out this Related Man Page
SRM(1) General Commands Manual SRM(1)NAME
srm - securely remove files or directories
SYNOPSIS
srm [OPTION]... FILE...
DESCRIPTION
srm removes each specified file by overwriting, renaming, and truncating it before unlinking. This prevents other people from undeleting or
recovering any information about the file from the command line.
srm, like every program that uses the getopt function to parse its arguments, lets you use the -- option to indicate that all following
arguments are non-options. To remove a file called '-f' in the current directory, you could type either "srm -- -f" or "srm ./-f".
OPTIONS -d, --directory
ignored (for compatibility with rm(1))
-f, --force
ignore nonexistent files, never prompt
-i, --interactive
prompt before any removal
-r, -R, --recursive
remove the contents of directories recursively
-s, --simple
only overwrite with a single pass of random data
-m, --medium
overwrite the file with 7 US DoD compliant passes (0xF6, 0x00, 0xFF, random, 0x00, 0xFF, random)
-z, --zero
after overwriting, zero blocks used by file
-n, --nounlink
overwrite file, but do not rename or unlink it
-v, --verbose
explain what is being done
--help display this help and exit
--version
output version information and exit
NOTES
srm can not remove write protected files owned by another user, regardless of the permissions on the directory containing the file.
The -s option overrides the -m option, if both are present. If neither is specified, the 35-pass Gutmann algorithm is used.
Development and discussion of srm is carried out at <http://sourceforge.net/project/?group_id=3297>, which is also accessible via
<http://srm.sourceforge.net>.
SEE ALSO rm(1)Mac OS X 20 September 2004 SRM(1)