[Linux] How to Auto login x window

本次實驗系統Centos 5.7版

Part 1: auto-login x window by root

step 1:

1. [root@localhost /]# vi etc\inittab

不正確的 /etc/inittab 設會使得系統不正常，而且無法登入，所以修改 /etc/inittab 前請先做好備分，/etc/inittab 的設定如下：

1. root@: ~# 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:
   
   # 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"
   
   # If power was restored before the shutdown kicked in, cancel it.
   pr:12345:powerokwait:/sbin/shutdown -c "Power Restored; Shutdown Cancelled"
   
   # Run gettys in standard runlevels
   1:2345:once:/sbin/mingetty --autologin root tty1
   2:2345:respawn:/sbin/mingetty tty2
   3:2345:respawn:/sbin/mingetty tty3
   4:2345:respawn:/sbin/mingetty tty4
   5:2345:respawn:/sbin/mingetty tty5
   6:2345:respawn:/sbin/mingetty tty6
   
   # Run xdm in runlevel 5
   x:5:respawn:/etc/X11/prefdm -nodaemon

step 2:

1. [root@localhost /]# vi root\.bash_profile
   ......
   ......
   #最後一行加入
   startx

Centos 6.2版

auto-login x window by root

#gdmsetup 這個指令主要是修改 /etc/gdm/custom.conf 設定檔

1. [root@localhost /]# vi /etc/gdm/custom.conf 
   [daemon]
   AutomaticLoginEnable=true
   AutomaticLogin=root

Part 2: auto-login x window by user

#gdmsetup 這個指令主要是修改 /etc/gdm/custom.conf 設定檔

1. [root@localhost /]# vi /etc/gdm/custom.conf 
   [daemon]
   AutomaticLoginEnable=true
   AutomaticLogin=username #注意:username 請改成做用者帳號。
   TimedLoginEnable=true 
   TimedLogin=username #注意:username 請改成做用者帳號。
   TimedLoginDelay=0