Пакет: zerofree (1.1.1-1)

[ Источник: zerofree  ]

zero free blocks from ext2, ext3 and ext4 file-systems

Zerofree finds the unallocated blocks with non-zero value content in an ext2, ext3 or ext4 file-system and fills them with zeroes (zerofree can also work with another value than zero). This is mostly useful if the device on which this file-system resides is a disk image. In this case, depending on the type of disk image, a secondary utility may be able to reduce the size of the disk image after zerofree has been run. Zerofree requires the file-system to be unmounted or mounted read-only.

The usual way to achieve the same result (zeroing the unused blocks) is to run "dd" to create a file full of zeroes that takes up the entire free space on the drive, and then delete this file. This has many disadvantages, which zerofree alleviates:

 * it is slow;
 * it makes the disk image (temporarily) grow to its maximal extent;
 * it (temporarily) uses all free space on the disk, so other
   concurrent write actions may fail.

Zerofree has been written to be run from GNU/Linux systems installed as guest OSes inside a virtual machine. If this is not your case, you almost certainly don't need this package. (One other use case would be to erase sensitive data a little bit more securely than with a simple "rm").

Теги: Системное администрирование: Инструмент для файловой системы, Реализовано на: C, Роль: Программа

Другие пакеты, относящиеся к zerofree

• dep: libc6 (>= 2.17) [arm64]

  библиотека GNU C: динамически подключаемые библиотеки
  также виртуальный пакет, предоставляемый libc6-udeb

  dep: libc6 (>= 2.4) [не arm64]

• dep: libext2fs2 (>= 1.42)

  библиотеки для работы с файловыми системами ext2/ext3/ext4

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Архитектура	Размер пакета	В установленном виде	Файлы
amd64	8,2 Кб	25,0 Кб	[список файлов]
arm64	8,0 Кб	25,0 Кб	[список файлов]
armhf	8,7 Кб	25,0 Кб	[список файлов]
i386	8,3 Кб	25,0 Кб	[список файлов]