перезаписать файл, чтобы скрыть его содержимое, и при желании удалить его (overwrite a file to hide its contents, and optionally delete it)
Имя (Name)
shred - overwrite a file to hide its contents, and optionally
delete it
Синопсис (Synopsis)
shred [OPTION]... FILE...
Описание (Description)
Overwrite the specified FILE(s) repeatedly, in order to make it
harder for even very expensive hardware probing to recover the
data.
If FILE is -, shred standard output.
Mandatory arguments to long options are mandatory for short
options too.
-f, --force
change permissions to allow writing if necessary
-n, --iterations=N
overwrite N times instead of the default (3)
--random-source=FILE
get random bytes from FILE
-s, --size=N
shred this many bytes (suffixes like K, M, G accepted)
-u deallocate and remove file after overwriting
--remove[=HOW]
like -u but give control on HOW to delete; See below
-v, --verbose
show progress
-x, --exact
do not round file sizes up to the next full block;
this is the default for non-regular files
-z, --zero
add a final overwrite with zeros to hide shredding
--help display this help and exit
--version
output version information and exit
Delete FILE(s) if --remove (-u) is specified. The default is not
to remove the files because it is common to operate on device
files like /dev/hda, and those files usually should not be
removed. The optional HOW parameter indicates how to remove a
directory entry: 'unlink' => use a standard unlink call. 'wipe'
=> also first obfuscate bytes in the name. 'wipesync' => also
sync each obfuscated byte to disk. The default mode is
'wipesync', but note it can be expensive.
CAUTION: shred assumes the file system and hardware overwrite
data in place. Although this is common, many platforms operate
otherwise. Also, backups and mirrors may contain unremovable
copies that will let a shredded file be recovered later. See the
GNU coreutils manual for details.
