这是一个良好的习惯: 将复杂的命令集合到脚本中, 之后的操作只和这几个脚本打交道. 本文中会用到以下三个脚本:

• $WORK/openlfslivecd

  此脚本用于加载 $WORK/root.ext2 到 $WORK/root/

  cat > $WORK/openlfslivecd << "EOF"
  #!/bin/sh
  
  cd $WORK
  
  # remount
  mount -o loop $WORK/root.ext2 $WORK/root
  
  mkdir $WORK/root/build
  mount --bind /usr/src $WORK/root/build
  
  mount -t proc proc $WORK/root/proc
  mount -t sysfs sysfs $WORK/root/sys
  mount -t devpts devpts $WORK/root/dev/pts
  mount -t tmpfs tmpfs $WORK/root/dev/shm
  EOF
  chmod +x $WORK/openlfslivecd
  

• $WORK/closelfslivecd

  此脚本用于卸载 $WORK/root/

  cat > $WORK/closelfslivecd << "EOF"
  #!/bin/sh
  
  #umount
  umount $WORK/root/dev/shm
  umount $WORK/root/dev/pts
  umount $WORK/root/sys
  umount $WORK/root/proc
  umount $WORK/root/build && rmdir $WORK/root/build
  
  #remove history
  [ -f $WORK/root/root/.bash_history ] && rm $WORK/root/root/.bash_history
  [ -f $WORK/root/root/.viminfo ] && rm $WORK/root/root/.viminfo
  
  #umount
  umount $WORK/root
  EOF
  chmod +x $WORK/closelfslivecd
  

• $WORK/mklfslivecd

  此脚本用于卸载 $WORK/root/; 压缩 $WORK/root.ext2 至 $WORK/iso/root.ext2; 加载 $WORK/root.ext2 以便继续修改

  cat > $WORK/mklfslivecd << "EOF"
  #!/bin/sh
  
  export WORK=/mnt/lfslivecd
  cd $WORK
  
  # umount
  ./closelfslivecd
  
  # compress
  mkzftree -v -F $WORK/root.ext2 iso/root.ext2
  
  # burn cd
  cd $WORK/iso
  mkisofs -z -R -l --allow-leading-dots -D -o \
      ../lfslivecd-x86-6.3-r2160-custom.iso -b boot/isolinux/isolinux.bin \
      -c boot/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table \
      -V "lfslivecd-x86-6.3-r2160" ./
  
  # transfer
  cd $WORK
  
  # you can then use ftp to upload the ISO if you configured ~/.netrc
  #ftp ftpserver
  
  # remount
  ./openlfslivecd
  EOF
  chmod +x $WORK/mklfslivecd