CertiGuide to A+ (A+ 4 Real)  9  Chapter 5: The Linux Operating System       9  The Major Components and Interfaces of Linux and Their Functions            9  /etc

/etc/group 1 /etc/passwd

The GRand Unified Bootloader (grub), is one of the two major boot loader programs for Linux, lilo (LInux LOader) being the other. The configuration file provides the boot loader the information it needs to boot the system.

Both loaders can support multi-boot systems so a system can be configured to boot different Linux kernels or windows. This is a sample grub.conf file whick will boot either of two different Linux installations.

boot=/dev/hda

default=0

timeout=10

splashimage=(hd0,2)/boot/grub/splash.xpm.gz

title Linux (2.4.18-14)

root (hd0,2)

kernel /boot/vmlinuz-2.4.18-14 ro root=LABEL=/1

initrd /boot/initrd-2.4.18-14.img

title Linux2 (2.4.18-3)

root (hd0,0)

kernel /boot/vmlinuz-2.4.18-3 ro root=/dev/hda1

initrd /boot/initrd-2.4.18-3.img

/etc/group 1 /etc/passwd