Linux System Administration

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Chapter 8: Local Network Services

lppasswd

Changes the CUPS password used by the system. Set

AuthType to Digest in the

cupsd.conf configuration file.

enable and disable

Starts or stops the specified queue. The most frequently used command is dis-

able with the -c option, to stop a queue and cancel all the jobs currently in the

queue.

accept and reject

Causes the print queue to begin accepting or rejecting new jobs.

lprm

Removes a job from the queue. You can specify the queue (-P

queue) and the job

identifier (obtained with lpstat).

lpmove

Moves a print job from one queue to another with a job identifier and a queue

name (e.g., lpmove queue1-46 queue2).

You can try these commands on your own. Here’s an example of the first one on the

printer we just set up using the CUPS interface:

# lpc status

BrotherHL1440:

printer is on device 'parallel' speed -1

queuing is enabled

printing is enabled

no entries

daemon present

User Management

In Linux, you can manage users (add, change, delete) in many ways. In the begin-

ning of this section, we’re going to assume that each server you administer has its

own database of users, found in the /etc/passwd file. We’re also going to assume that

you know the basics of adding and deleting user accounts with the commands

adduser and useradd for whatever distribution you use, since they differ from distro

to distro.

Different Linux distributions have changed the default behavior ...