리눅스 Run Level 변경 ( init )

Linux Run Level

RunLevel 0 : 시스템 종료(halt)     RunLevel 1 : 단일 사용자, 싱글 모드     RunLevel 2 : NFS를 지원하지 않는 다중 사용자 모드     RunLevel 3 : 모든 기능을 포함한 다중 사용자 모드(X윈도우 지원안함)     RunLevel 4 : 사용되지 않는 실행모드(사용자가 직접정의하여 사용)     RunLevel 5 : X윈도우 부팅, GUI환경     RunLevel 6 : 시스템 재부팅

RunLevel 변경 ex) init 3 으로 변경

[root@yybox /]# init 3

부팅시 적용

[root@yybox /]# vi /etc/inittab # inittab       This file describes how the INIT process should set up #               the system in a certain run-level. # # Author:       Miquel van Smoorenburg, <miquels@drinkel.nl.mugnet.org> #               Modified for RHS Linux by Marc Ewing and Donnie Barnes # # Default runlevel. The runlevels used by RHS are: #   0 - halt (Do NOT set initdefault to this) #   1 - Single user mode #   2 - Multiuser, without NFS (The same as 3, if you do not have networking) #   3 - Full multiuser mode #   4 - unused #   5 - X11 #   6 - reboot (Do NOT set initdefault to this) # id:3:initdefault:  <<  id값을 변경한다. # System initialization. si::sysinit:/etc/rc.d/rc.sysinit l0:0:wait:/etc/rc.d/rc 0 l1:1:wait:/etc/rc.d/rc 1 l2:2:wait:/etc/rc.d/rc 2 l3:3:wait:/etc/rc.d/rc 3 l4:4:wait:/etc/rc.d/rc 4 l5:5:wait:/etc/rc.d/rc 5 l6:6:wait:/etc/rc.d/rc 6 # Trap CTRL-ALT-DELETE ca::ctrlaltdel:/sbin/shutdown -t3 -r now # When our UPS tells us power has failed, assume we have a few minutes # of power left.  Schedule a shutdown for 2 minutes from now. # This does, of course, assume you have powerd installed and your # UPS connected and working correctly. pf::powerfail:/sbin/shutdown -f -h +2 "Power Failure; System Shutting Down"