不怎麼先進的Jail換血

#!/bin/sh

Technorati 的標籤: FreeBSD Jail

export mroot2=/home/mroot2 # the New mroot
export mroot=/home/mroot # the Origin mroot
export opt=opt # The MountPoint to sew skel with mroot

if [ ! -d  $mroot2 ]; then mkdir $mroot2 ; fi
cd /usr/src
make installworld DESTDIR=$mroot2

cd $mroot2
chflags 0 /home/mroot2/var
rm -rfv etc home root tmp var usr/local usr/X11R6 usr/ports

if [ ! -d $opt ]; then  mkdir $mroot2/$opt ;fi

for dirs in etc home root tmp var
do
echo " ln -s /opt/$dirs $dirs"
ln -s $opt/$dirs $dirs
done

ln -s ../$opt/usr-local usr/local
ln -s ../$opt/usr-X11R6 usr/X11R6
ln -s ../$opt/usr-ports usr/ports

cd /
ls /var/run | grep jail | sed -e 's/jail_//g' -e 's/\.id//g' |xargs > /tmp/jlist$$
/etc/rc.d/jail stop `cat /tmp/jlist$$`

for mounted in `cat /etc/fstab | grep nullfs | grep -v ^# | awk '{print $2 }'  | sort -r `
do
echo umount $mounted
umount $mounted
done

echo "    You should make sure the FileSystem Umount properly."
cat /etc/fstab
echo "    Now a Subshell for you th Umount Filesystem manually."
echo "    If this fails too, you might take a reboot, "
echo "     and Move mroot2 to mroot by hand."

/bin/sh
df
echo "    You should have made sure the FileSystem Umounted properly."
echo "     Or press [Ctrl C] to stop in 7 seconds"

sleep 8

mv $mroot $mroot.bak
mv $mroot2 $mroot

mount -a
/etc/rc.d/jail start `cat /tmp/jlist$$`

rm /tmp/jlist.$$

echo “ Take a check. “