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CompTIA® Linux+ Certification, Powered by LPI, Student Manual by Axzo Press

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User environment configuration 529
Unit summary: User environment configuration
Topic A In this topic, you learned that shell and environment variables store frequently used
values for each user on a system. You viewed the variables with the set and env
commands. You created custom variables and exported them. You also created
command aliases. Finally, you modified user profile files to reload your variables and
aliases each time you open a terminal window or shell prompt.
Topic B In this topic, you learned that modern windowing environments, such as GNOME and
KDE, simplify and automate most video configuration tasks. You can use the Screen
Resolution Settings, Appearance, and Screensaver applications to modify your GUI
environment. You can also use the Mouse and Keyboard applications to configure your
input devices.
Review questions
1 What command do you use to fine-tune video settings?
A Screen Resolution Preferences
B
videotune
C
xorg.conf
D
xvidtune
2 True or false? You must be logged on as root to change the screen resolution
settings.
False. You can make such changes as a normal user.
3 True or false? When you change the screen resolution settings, those settings affect
only your account.
True
4 True or false? You must edit a configuration file to set the maximum color depth
supported by your hardware.
True, though the correct value should be automatically detected and configured when you install
Linux.
5 In X Windows terminology, which term describes the CRT or LCD device sitting
on your desk?
A Screen.
B Display.
C Monitor.
D Device.
6 In X Windows terminology, which term describes the graphics adapter?
A Screen.
B Display.
C Monitor.
D Device.
530 CompTIA Linux+ Certification, Powered by LPI
7 True or false? You must configure the X Font Server in order to render fonts
properly on your screen.
False. Modern systems do not rely on the server-side font technology described by xfs.
8 To configure multiuser displays on GNOME, you must edit the ____ file.
/usr/share/gdm/defaults.conf
9 What is the purpose of the xhost command?
You use it to configure host-based X Windows server security for remote clients.
10 The purpose of the greeter is to:
A Output a “message of the day” greeting to users when they log in.
B Manage log-in related messages, such as those displayed when the user enters
the wrong password.
C Manage the display theme when no one is logged onto the system.
D Display welcome messages to users when they log in X Windows from a remote
X-station.
Independent practice activity
1 Change the desktop theme to Clearlooks (the default theme).
2 Change the wallpaper to “Debian Lennywhich, as of this writing, is the fourth
wallpaper in the list.
3 Log out.
4 If necessary, enter sudo /etc/init.d/gdm start to start the graphical environment.
5 From the login screen, configure the greeter to use the Debian MoreBlue Orbit
theme.
6 Log in.

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