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.

-l file

Consult file for a list of bad blocks, in addition to checking for

others.

-n Ensure that no changes are made to the filesystem. When

queried, answer “no.”

-p “Preen.” Repair all bad blocks noninteractively.

-s Byte-swap the filesystem if necessary to standard (little-

endian) byte-order.

-t Display timing statistics.

-v Verbose.

-y When queried, answer “yes.”

-B size

Expect to find the superblock at size; if it’s not there, exit.

-C filedescriptor

Write completion information to the specified filedescriptor.If

0, print a completion bar.

-D Optimize directories by reindexing, sorting, and compressing

them where possible.

-F Flush buffer caches before checking.

-L file

Consult file for list of bad blocks instead of checking file-

system for them.

-S Byte-swap the filesystem.

e2image

e2image [option] device file

System administration command. Store disaster recovery data for

ext2 filesystem on device to image file file. Weekly filesystem

images can be an important part of a disaster recovery plan.

Option

-r Create a raw image file that can be checked and debugged

using filesystem utilities such as e2fsck or debugfs. Raw

images are created as sparse files. Either compress the image

file before moving it, or use the --sparse=always option when

copying it with cp.

--sparse ...