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日期:2012-05-05 22:43:00  来源:本站整理

改正grub.cfg让Ubuntu屏幕打印开机信息[Linux安全]

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  本文“改正grub.cfg让Ubuntu屏幕打印开机信息[Linux安全]”是由七道奇为您精心收集,来源于网络转载,文章版权归文章作者所有,本站不对其观点以及内容做任何评价,请读者自行判断,以下是其具体内容:

  #

  # DO NOT EDIT THIS FILE

  #

  # It is automatically generated by /usr/sbin/grub-mkconfig using templates

  # from /etc/grub.d and settings from /etc/default/grub

  #由 /usr/sbin/grub-mkconfig读取 /etc/default/grub中的配置信息,并采取/etc/grub.d 作为模板,自动生成.

  ### BEGIN /etc/grub.d/00_header ###

  if [ -s $prefix/grubenv ]; then

  load_env

  fi

  set default="0"

  if [ ${prev_saved_entry} ]; then

  set saved_entry=${prev_saved_entry}

  save_env saved_entry

  set prev_saved_entry=

  save_env prev_saved_entry

  set boot_once=true

  fi

  function savedefault {

  if [ -z ${boot_once} ]; then

  saved_entry=${chosen}

  save_env saved_entry

  fi

  }

  function recordfail {

  set recordfail=1

  if [ -n ${have_grubenv} ]; then if [ -z ${boot_once} ]; then save_env recordfail; fi; fi

  }

  insmod ext2

  set root='(hd0,1)'

  search --no-floppy --fs-uuid --set d98561c1-62af-4753-b6f0-fbcfcb6a7541

  if loadfont /usr/share/grub/unicode.pf2 ; then 加载的字体文件.

  set gfxmode=640x480 gfx情势是640*480

  insmod gfxterm

  insmod vbe

  if terminal_output gfxterm ; then true ; else

  # For backward compatibility with versions of terminal.mod that don't

  # understand terminal_output

  terminal gfxterm

  fi

  fi

  insmod ext2

  set root='(hd0,1)'

  search --no-floppy --fs-uuid --set d98561c1-62af-4753-b6f0-fbcfcb6a7541

  set locale_dir=($root)/boot/grub/locale 本地化文件目录

  set lang=en 语言是english

  insmod gettext

  if [ ${recordfail} = 1 ]; then

  set timeout=-1

  else

  set timeout=10

  fi

  ### END /etc/grub.d/00_header ###

  ### BEGIN /etc/grub.d/05_debian_theme ###

  set menu_color_normal=white/black

  set menu_color_highlight=black/light-gray

  ### END /etc/grub.d/05_debian_theme ###

  ### BEGIN /etc/grub.d/10_linux ###

  菜单项

  menuentry 'Ubuntu, with Linux 2.6.32-21-generic' --class ubuntu --class gnu-linux --class gnu --class os {

  recordfail

  insmod ext2

  set root='(hd0,1)'

  search --no-floppy --fs-uuid --set d98561c1-62af-4753-b6f0-fbcfcb6a7541

  linux /boot/vmlinuz-2.6.32-21-generic root=UUID=d98561c1-62af-4753-b6f0-fbcfcb6a7541 ro quiet

  我把这里的splash去除了.这样开机就可以看到那些开始信息了.

  initrd /boot/initrd.img-2.6.32-21-generic

  }

  menuentry 'Ubuntu, with Linux 2.6.32-21-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {

  recordfail

  insmod ext2

  set root='(hd0,1)'

  search --no-floppy --fs-uuid --set d98561c1-62af-4753-b6f0-fbcfcb6a7541

  echo 'Loading Linux 2.6.32-21-generic ...'

  linux /boot/vmlinuz-2.6.32-21-generic root=UUID=d98561c1-62af-4753-b6f0-fbcfcb6a7541 ro single

  恢复情势,是单用户情势.

  echo 'Loading initial ramdisk ...' ramdisk?输出这个信息做什么呢?

  initrd /boot/initrd.img-2.6.32-21-generic 跟正常启动时的,是同一个文件.

  }

  ### END /etc/grub.d/10_linux ###

  完毕etc/grub.d/10_linux

  开启/etc/grub.d/20_memtest86+

  ### BEGIN /etc/grub.d/20_memtest86+ ###

  menuentry "Memory test (memtest86+)" {

  insmod ext2

  set root='(hd0,1)'

  search --no-floppy --fs-uuid --set d98561c1-62af-4753-b6f0-fbcfcb6a7541

  linux16 /boot/memtest86+.bin

  }

  menuentry "Memory test (memtest86+, serial console 115200)" {

  insmod ext2

  set root='(hd0,1)'

  search --no-floppy --fs-uuid --set d98561c1-62af-4753-b6f0-fbcfcb6a7541

  linux16 /boot/memtest86+.bin console=ttyS0,115200n8

  }

  ### END /etc/grub.d/20_memtest86+ ###

  ### BEGIN /etc/grub.d/30_os-prober ###

  if [ ${timeout} != -1 ]; then

  if keystatus; then

  if keystatus --shift; then

  set timeout=-1

  else

  set timeout=0

  fi

  else

  if sleep --interruptible 3 ; then

  set timeout=0

  fi

  fi

  fi

  ### END /etc/grub.d/30_os-prober ###

  ### BEGIN /etc/grub.d/40_custom ### 可以安闲增添启动菜单项

  # This file provides an easy way to add custom menu entries. Simply type the

  # menu entries you want to add after this comment. Be careful not to change

  # the 'exec tail' line above.

  ### END /etc/grub.d/40_custom ###

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