code.delx.au - refind/blob - mkrlconf.sh

   1 #!/bin/bash
   2
   3 # Script to create a refind_linux.conf file for the current Linux
   4 # installation.
   5
   6 # copyright (c) 2012-2015 by Roderick W. Smith
   7 #
   8 # This program is licensed under the terms of the GNU GPL, version 3,
   9 # a copy of which should be distributed with this program.
  10
  11 # Usage:
  12 #
  13 # ./mkrlconf.sh [--force]
  14 #
  15 # Options:
  16 #
  17 #   --force  -- Overwrite an existing file (default is to not replace existing file)
  18
  19 # Revision history:
  20 #
  21 #  0.9.0 -- Added check for OS type, to keep from running pointlessly on OS X
  22 #  0.7.7 -- Fixed bug that caused stray PARTUUID= and line breaks in generated file
  23 #  0.5.1 -- Initial release
  24 #
  25 # Note: mkrlconf.sh version numbers match those of the rEFInd package
  26 # with which they first appeared.
  27
  28 RLConfFile="/boot/refind_linux.conf"
  29
  30 if [[ `uname -s` != "Linux" ]] ; then
  31    echo "This script is intended to be run from Linux. Aborting!"
  32    echo ""
  33    exit 1
  34 fi
  35
  36 if [[ ! -f $RLConfFile || $1 == "--force" ]] ; then
  37    if [[ -f /etc/default/grub ]] ; then
  38       # We want the default options used by the distribution, stored here....
  39       source /etc/default/grub
  40    fi
  41    RootFS=`df / | grep dev | cut -f 1 -d " "`
  42    StartOfDevname=`echo $RootFS | cut -b 1-7`
  43    if [[ $StartOfDevname == "/dev/sd" || $StartOfDevName == "/dev/hd" ]] ; then
  44       # Identify root filesystem by UUID rather than by device node, if possible
  45       Uuid=`blkid -o export -s UUID $RootFS 2> /dev/null | grep UUID=`
  46       if [[ -n $Uuid ]] ; then
  47          RootFS=$Uuid
  48       fi
  49    fi
  50    DefaultOptions="$GRUB_CMDLINE_LINUX $GRUB_CMDLINE_LINUX_DEFAULT"
  51    echo "\"Boot with standard options\"        \"ro root=$RootFS $DefaultOptions \"" > $RLConfFile
  52    echo "\"Boot to single-user mode\"          \"ro root=$RootFS $DefaultOptions single\"" >> $RLConfFile
  53    echo "\"Boot with minimal options\"         \"ro root=$RootFS\"" >> $RLConfFile
  54 else
  55    echo "Existing $RLConfFile found! Not overwriting!"
  56    echo "To force overwriting, pass the --force option."
  57    echo ""
  58 fi