Linux in a Nutshell, Fifth Edition

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Chapter 3: Linux Commands

This is the Title of the Book, eMatter Edition

Copyright © 2006 O’Reilly & Associates, Inc. All rights reserved.

-S, --separate-dirs

Do not include the sizes of subdirectories when totaling the

size of parent directories.

-x, --one-file-system

Display usage of files in current filesystem only.

-X, --exclude-from=file

Exclude files that match any pattern in file.

--help

Print help message and then exit.

--version

Print the version and then exit.

dump

dump [options] files

System administration command. This simple backup utility

accesses ext2 and ext3 file devices directly, quickly backing up files

without affecting file access times. files may be specified as a mount

point or as a list of files and directories to back up. While you can

use this on a mounted system, dump may write corrupted informa-

tion to the backup when the kernel has written only part of its

cached information. Dump maintains a record of which files it has

saved in /etc/dumpdates, and will perform incremental backups

after creating an initial full backup. Use the restore command to

restore a dump backup.

Options

-a Write until end-of-media. Default behavior when writing to

tape drives.

-A file

Create a table of contents for the archive in the specified file.

-b blocksize

Block size in kilobytes to use in dumped records. By default, it

is 10, or 32 when dumping to a tape with a density greater

than 6250BPI.

-B blocks ...