THC-SecureDelete

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3.1 GPL (GNU General Public License)    
3.2/5 22
THC-SecureDelete is the best secure data deletion toolkit!

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THC-SecureDelete is the best secure data deletion toolkit! If you overwrite a file for 10+ times, it can still be recovered. Read why and use the programs included (w/src!).

These tools can wipe files, free disk space, swap and memory! Changes: Linux LKM for secure file deletion included, small bufixes.

COMMANDLINE OPTIONS

Here are the commandline options:

srm [-d] [-f] [-l] [-l] [-v] [-z] file [file] [another file] [etc.]
sfill [-i] [-I] [-f] [-l] [-l] [-v] [-z] target-directory
sswap [-f] [-l] [-l] [-v] [-z] /dev/of_swap_filesystem
smem [-f] [-l] [-l] [-v]

The -s options are depricated now, and will be ignored.

-d don't delete the dot special files "." and ".." on the
commandline (only srm)
-i wipe only free inode space, not free disk space on the filesystem
(only sfill)
-I wipe only free disk space, not free inode space on the filesystem
(only sfill)
-f fast writes without O_SYNC and sync() between writes. Much faster
but less secure.
-l lessens the security. Only one random plus one pass with 0xff are
written.
-l a seconds time as parameter switches into the insecurest mode,
it overwrites the file only once with 0xff.
-v turn verbose mode on.
-z last wipe mode writes zeros instead of random data
file file to delete. Wildcards are of course allowed.
For unix: you need write permissions. For msdos: It may be hidden,
system, readonly etc. we don't care.
target-directory target is a directory in the filesystem to write to.
swap_filesystem your swap filesystem. Unmount it first!!
only tested on linux

Options may be applied like "-lfv", "-l -f -v" or a mix.

Note: If you use a gnu-compactible linux, you can use the patch rm.diff included in the package to put the features from srm into your normal rm. Just enter your fileutils-3.16 directory, type "patch < rm.diff" and then "make". You need at least one -s switch to activate (1 overwrite). Note that -sss is needed for full security.

NOTE:

For the linux kernel module, you just have to do "insmod sdel-mod" to load the module. After that, all files, which are deleted by any program are then wiped once before the space is marked as free.
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Last updated on March 8th, 2006

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