CompTia Linux+ Ch. 8
grub2-install
command used to re-install GRUB2 in the event that the boot loader becomes corrupted
service
command used to start, stop or restart any daemons in the /etc/init.d directory
systemctl stop lala.service
command used to stop a daemon called lala
xvidtune
command which can be used to fine tune the vsync and hsync of a video card for use in Windows X
startx
command which can be used to start X Windows, the window manager and the default desktop environment
chkconfig --level 123 lala on
command which can be used to start a unix sysv daemon called lala in runlevels 1,2, and 3
init 1
command which caused the system to enter single user mode
grub2-mkconfig
command which should be run to rebuild the grub config files
grub2-mkconfig
command you can use to rebuild the GRUB2 configuration file
graphical target
default target on a system with a GUI installed
/boot
directory which Stage2 of the GRUB2 boot loader is stored
/etc/init.d
directory which stores most UNIX SysV rc scripts
/boot
directory which the Linux kernel is stored
MBR/GPT
either can contain the boot loader
/etc/systemd/system/default.target
file which controls the default runlevel when using systemd
/etc/inittab
file which the UNIX SysV init daemon references on startup to determine the default run level
(hd2,1)
indicates the second partition on the third hard disk drive to GRUB
single
keyword which can be specified within a boot loader to force the system to boot to single user mode
systemctl
list all running services
# systemctl list-units --type=target
lists the current run level
you wish to configure the runlevels that a particular upstart daemon is started in. What should you do?
modify the daemon configuration file within the /etc/init directory
/etc/rc2.d
name of the directory which contains symbolic links to UNIX SysV rc scripts for runlevel2
LILO
needs to be reinstalled after it has been modified
chkconfig
on linux systems that use the traditonal UNIX Sys V init, lists and modifies the runlevels that a daemon is started in
(hd0,0)
represents the first hard drive in a system and the first partition on that hard drive
0
runlevel which halts the system
0
runlevel which has no daemons active in memory allowing it to be safely powered off
graphical target
systemd target which corresponds to runlevel5
x server
the component of X Windows that draws graphics to windows on the terminal screen
X client
the component of X Windows that requests graphics to be drawn from the X server and displays them on the terminal screen
mutter window manager
the default window manager for the GNOME desktop environment in fedora 13
init
the first daemon loaded on a linux system
active partition
the partition searched for an operatin system after the MBR/GPT
seconds
timeout value in the GRUB configuration file is measured in
systemctl
when using systemd, this command can be used to start, stop and configure daemons to start automatically when the system starts
systemd
a relatively ew software framework used on linux systems that provides a system initialization process and system management functions
target unit
a systemd term that is used to describe the number and type of daemons running on a linux system
unix sysv
a unix standard that is used to provide the structure of the system initialization process on linux systems
runlevel
a unix sysvterm that defines a certain type and number of daemons on a linux system
systemctl start foo.service
activates a service immediately
X.org, XFree86
X windows implementations used in linux
daemon
a linux system process that provides a system servic
upstart
a recent version of the unix sysv system initializtion process used on modern Linux distributions