BSD关机重启脚本/etc/rc.d/rc.0

BSD关机重启脚本/etc/rc.d/rc.0

#!/bin/sh

# 关闭所有程序

echo "Sending all processes the TERM signal..."

/sbin/killall5 -15

sleep 1

echo "Sending all processes the KILL signal..."

/sbin/killall5 -9

sleep 1

# 卸载swap

echo "Deactivating swap partitions..."

/sbin/swapoff -a

# 保存随想数种子

echo "Saving random seed to a temporary file..."

/bin/dd if=/dev/urandom of=/etc/random-seed count=1 bs=512 2>/dev/null

# 保存系统时钟

echo "Saving the system time to hardware clock..."

/sbin/hwclock --systohc --utc

# 卸载远程系统

echo "Unmounting remote filesystems..."

/bin/umount -a -f -tnfs

# -w参数并不会真的重开机，只是把记录写到 /var/log/wtmp 档案里

# 0级和6级这里是一个文件，通过脚本名来判断是关机还是重启，所以有了下面结构。

case "$0" in

*6)

/sbin/reboot -w

;;

*0)

/sbin/halt -w

;;

esac

# 以只读方式挂载系统

echo "Remounting root filesystem read-only..."

/bin/mount -n -o remount,ro /

#将刷新缓存，保存数据

echo "Flushing filesystem buffers..."

/bin/sync

#卸载本地文件系统

echo "Unmounting local filesystems..."

/bin/umount -a -tnonfs

# 关机

case "$0" in

*6)

echo "Please stand by while rebooting..."

/sbin/reboot -d -f -i

;;

*0)

echo "Bye..."

/sbin/halt -d -f -p

;;

esac