Linux in a Nutshell, Fifth Edition

tunelp | 489

Linux

Commands

This is the Title of the Book, eMatter Edition

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

prefix or a plus sign (+) causes the option to be set. Run

e2fsck after changing filetype or sparse_super. The following

options can be cleared or set:

dir_index

Use B-trees to speed up lookups on large directories.

filetype

Save file type information in directory entries.

has_journal

Create an ext3 journal. Same as the -j option.

sparse_super

Save space on large filesystems by limiting the number of

backup superblocks. Same as -s.

-r num

Specify the number of blocks that will be reserved for use by

privileged users.

-s [0|1]

Turn the sparse superblock feature on or off. Run e2fsck after

changing this feature.

-T time

Set the time e2fsck was last run. The time specification is

international date format, with the time optional—i.e.,

YYYYMMDD[[HHMM]SS]. If time is specified as time-last-

checked, the current time is used.

-u user

Allow user (a user ID or name) to use reserved blocks.

-U uuid

Set the UUID of the filesystem to a UUID generated by

uuidgen or to one of the following:

clear

Clear the existing UUID.

random

Randomly generate a new UUID.

time

Generate a new time-based UUID.

tunelp

tunelp device [options]

System administration command. Control a line printer’s device

parameters. Without options, print information about device(s).

Options

-a [on|off]

Specify whether or not to