linux启动过程详解

linux启动的过程：

1、启动BIOS

2、读取MBR

3、加载grub

4、kernel

5、启动第一个程序init

6、读取/etc/inittab配置文件==>/etc/rc.d/rc.sysinit==>/etc/rc.d/rc.脚本

7、启动mingetty进程。

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在启动文件下加入echo "ni hao" >>/tmp/test.txt

 [root@xusx ~]# vim /etc/rc.local

[root@xusx ~]# cat /etc/rc.local
#!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.

touch /var/lock/subsys/local

echo "ni hao" >> /tmp/test.txt

重启系统reboot发现在/tmp/test.txt下多出刚刚编写的

[root@xusx ~]# cat /tmp/test.txt
ni hao