[RHCE]redhat system management(I)
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1, process of boot
BIOS initialization
boot loader: firstly small, resides in MBR or boot section; then loaded from boot partition
kernel initialization
init starts and enters desired run level: /etc/inittab
2, minmum specifacation of OS
for linux: label, kernel location, OS root filesystem, location of initial ramdisk
other os, label, boot device
3, grub: Grand Unified bootloader
grub.conf
command line interface at boot prompt
start from filesystem
support md5 password
4, service management
utilities to control default services startup:
system-config-services: graphical utility that requires a X interface
ntsysv: ncurses based utility usable in virtual consoles
chkconfig: a fast, versatile command line utility that works well and is usable with scripts and kickstart installations.
utilities to control service manually:
service: immediately startup or stop a standalone service
chkconfig: immediately startup or stop a Xinted managed service
BIOS initialization
boot loader: firstly small, resides in MBR or boot section; then loaded from boot partition
kernel initialization
init starts and enters desired run level: /etc/inittab
2, minmum specifacation of OS
for linux: label, kernel location, OS root filesystem, location of initial ramdisk
other os, label, boot device
3, grub: Grand Unified bootloader
grub.conf
command line interface at boot prompt
start from filesystem
support md5 password
4, service management
utilities to control default services startup:
system-config-services: graphical utility that requires a X interface
ntsysv: ncurses based utility usable in virtual consoles
chkconfig: a fast, versatile command line utility that works well and is usable with scripts and kickstart installations.
utilities to control service manually:
service: immediately startup or stop a standalone service
chkconfig: immediately startup or stop a Xinted managed service
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