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June 22, 2014 10:49
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ubuntu 系统在开机启动后再自动重启一次
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#!/bin/sh -e | |
# | |
# rc.local | |
# | |
# This script is executed at the end of each multiuser runlevel. | |
# Make sure that the script will "exit 0" on success or any other | |
# value on error. | |
# | |
# In order to enable or disable this script just change the execution | |
# bits. | |
# | |
# By default this script does nothing. | |
if [ ! -f /root/.reboot ]; then | |
echo " Times=0 , start at `date`" > /root/.reboot | |
fi | |
n=`cat /root/.reboot|awk '{print substr($1,7)}'` | |
if [ $n = "0" ]; then | |
echo " Times=1 , start at `date`" > /root/.reboot | |
#sleep 20s | |
reboot | |
else | |
rm /root/.reboot | |
fi | |
exit 0 |
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工作中遇到有些网络配置需要在ubuntu 系统在开机启动后再重启一次才能生效的情况,修改/etc/rc.local 脚本实现自动重启一次。
主要是脚本会在启动后执行,通过文件的方式设置了一个可检测的标记,保证可以重启[一次],但不会一直重启。
脚本还可以简化为启动后检测某个文件是否存在,不存在就创建,然后重启,然后重启后发现文件存在,就删除即可。中间打印时间做个样子而已。
可能有用的参考资料:
http://blog.csdn.net/wzy_1988/article/details/8476901 Update-rc.d & rc.local管理Ubuntu的开机启动
http://blog.csdn.net/liguangyi/article/details/3771746 ubunut的rc.local不执行的问题
http://blog.163.com/lgh_2002/blog/static/44017526201032803748503/ ubuntu rc.local 为何不执行?