linux ch. 10

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printer class

a group of CUPS printers that are treated as a single unit for the purposes of printing and management

User Identifier (UID)

a unique number assigned to each user account

lp -d Printer1 file

command used to send a print job to the default printer named Printer1

lp file

command used to send a print job to the default printer named Printer1

usermod -U username

command used to unlock a user account

journalctl

command you can use to view journald log entries on a system that uses systemd

/etc/passwd

contains listing of user accounts

ryslogd, journald

daemons used on linux system

/etc/login.defs

file contains default information such as UID and GID ranges and minimum password length to be used at user creation

/etc/passwd

file that contains a listing of all users on the system and their home directories

/var/log

file where most log files on the system are found

priority

level of importance of information

UID and GID

may be reused

authentication

name used to describe a user providing a user name and password to log into a system

/etc/skel

skeleton directory on most linux systems

facility

specifies information from a certain area of the system

cancel command

the command used to remove print jobs from the print queue in the CUPS print system

CUPS daemon

the daemon responsible for printing in the CUPS printing system

primary group

the group that is specified for a user in the /etc/passwd file and that is specified as a group owner for all files created by a user

when printer is disabled

the print queue does accept jobs into the print queue and holds them there until the printer is enabled again

when printer is rejecting requests

the print queue does not accept jobs and sends a message to the user noting that the printer is unavailable

lpstat -t

command used to see a list of all printers on the system and their status

lock a user account

by changing the default login shell to an invalid shell in /etc/passwd

clear a log file

by redirecting it to nothing

userdel -r

command to remove the home directory for the user and all of its contents

lpadmin

command to restrict who can print to certain printers

newgrp

command used to alter the primary group associated with a given user temporarily

cancel Printer1-17 Printer 1-21

command used to cancel print jobs

chfn command

command used to change the GECOS for a user

useradd

command used to create user accounts on the Linux system

userdel username

command used to delete a user account

usermod -L username

command used to lock a user account

groupmod command

command used to modify the name or GID of a group on the system

spooling

the process of accepting a print job into a print queue

printing

the process of sending print jobs from the print queue to the printer

logrotate

utility used to rotate log files


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