BSD關機重啟腳本/etc/rc.d/rc.0
#!/bin/sh
# 關閉所有程序
echo "Sending all processes the TERM signal..."
/sbin/killall5 -15
sleep 1
echo "Sending all processes the KILL signal..."
/sbin/killall5 -9
sleep 1
# 卸載swap
echo "Deactivating swap partitions..."
/sbin/swapoff -a
# 保存隨想數種子
echo "Saving random seed to a temporary file..."
/bin/dd if=/dev/urandom of=/etc/random-seed count=1 bs=512 2>/dev/null
# 保存系統時鐘
echo "Saving the system time to hardware clock..."
/sbin/hwclock --systohc --utc
# 卸載遠程系統
echo "Unmounting remote filesystems..."
/bin/umount -a -f -tnfs
# -w參數並不會真的重開機,只是把記錄寫到 /var/log/wtmp 檔案裡
# 0級和6級這裡是一個文件,通過腳本名來判斷是關機還是重啟,所以有了下面結構。
case "$0" in
*6)
/sbin/reboot -w
;;
*0)
/sbin/halt -w
;;
esac
# 以只讀方式掛載系統
echo "Remounting root filesystem read-only..."
/bin/mount -n -o remount,ro /
#將刷新緩存,保存數據
echo "Flushing filesystem buffers..."
/bin/sync
#卸載本地文件系統
echo "Unmounting local filesystems..."
/bin/umount -a -tnonfs
# 關機
case "$0" in
*6)
echo "Please stand by while rebooting..."
/sbin/reboot -d -f -i
;;
*0)
echo "Bye..."
/sbin/halt -d -f -p
;;
esac