准备刻一张FreeBSD-7.0-RELEASE的DVD，网上很多介绍都是在Windows下使用什么iso提取工具的，貌似很麻烦。参考了一些FreeBSD高手的实现，我写了一个简单的脚本，主要功能是从3张disc*.iso创建出一个dvd.iso
1，准备工作：
工作目录 work/ 和 3张disc*.iso, 比如
work/7.0-RELEASE-i386-disc1.iso
work/7.0-RELEASE-i386-disc2.iso
work/7.0-RELEASE-i386-disc3.iso
2，用以下代码创建脚本文件，比如 mkdvd.sh，放在work目录下。用root用户执行，将在work目录下产生一个7.0-RELEASE-i386-dvd.iso的文件。
#!/bin/sh
disc1=`ls | grep "disc1.iso"`
disc2=`ls | grep "disc2.iso"`
disc3=`ls | grep "disc3.iso"`
dvd=`echo $disc1 | sed "s/disc1/dvd/"`
## Prepare temporary dir to store dvd files
if
test
–e tmp &&
test
–d tmp
then
rm –fr tmp
fi
mkdir tmp
## Extract contents of each disc*.iso to temporary dir
for disc in $disc3 $disc2 $disc1
do
mdconfig –a –f $disc –u 66
if
test
–e /dev/md66
then
echo Extract $disc ...
mount –t cd9660 /dev/md66 /mnt
tar –cf –
–C /mnt .
| tar –xf –
–C tmp/
umount /mnt
mdconfig –d –u 66
else
echo Can not create memory disk.
exit
–1
fi
done
##
Merge index to point to the first disc
echo Merge index ...
cd tmp
cat INDEX | sed "s/||2/||1/g"
> index
cat index | sed "s/||3/||1/g"
> INDEX
cat INDEX | sed "s/|3/|1/g"
> index
mv index INDEX
cd ..
## Make dvd iso file
echo Make $dvd ...
mkisofs –R –no–emul–boot –b boot/cdboot –o $dvd tmp
rm –fr tmp
exit 0
