linux ch. 10
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
