scripts/winboot

96 lines
2.3 KiB
Bash
Executable File

#!/bin/sh
# This script set a specific grub entry (winLOOSE…) for the next boot.
# Then reboot the host
# Vars {{{
readonly PROGNAME=$(basename "${0}")
readonly PROGDIR=$(readlink -m $(dirname "${0}"))
readonly ARGS="${*}"
readonly NBARGS="${#}"
readonly GRUB_DEFAULT_PATH='/etc/default/grub'
readonly GRUB_DEFAULT_DIR='/etc/default/grub.d'
readonly WIN_GRUB="2"
## By default, the host should reboot at the end of the script
REBOOT=0
HALT=1
# }}}
main() { # {{{
# First check in Grub default dir if saved mode is set
if grep -q -E -R -- "^GRUB_DEFAULT=saved" "${GRUB_DEFAULT_DIR}"
then
printf '%b' "Reboot to windaube partition\\n"
sudo grub-reboot "${WIN_GRUB}"
[ "${REBOOT}" -eq "0" ] && sudo systemctl reboot
[ "${HALT}" -eq "0" ] && sudo systemctl poweroff
fi
# Otherwise check the default grub file
if grep -q -E -- "^GRUB_DEFAULT=saved" "${GRUB_DEFAULT_PATH}"
then
printf '%b' "Reboot to windaube partition\\n"
sudo grub-reboot "${WIN_GRUB}"
[ "${REBOOT}" -eq "0" ] && sudo systemctl reboot
[ "${HALT}" -eq "0" ] && sudo systemctl poweroff
else
printf '%b' "GRUB_DEFAULT is not set in 'saved' mode\\n"
sudo sed -i 's/\(^GRUB_DEFAULT.*\)/#\1\nGRUB_DEFAULT=saved/' "${GRUB_DEFAULT_PATH}"
GRUB_DEFAULT_ENTRY=$(grep -E -- "#GRUB_DEFAULT=" "${GRUB_DEFAULT_PATH}" | cut -d"=" -f2)
sudo grub-set-default "${GRUB_DEFAULT_ENTRY}"
sudo update-grub
printf '%b' "Please launch this script (${PROGDIR}/${PROGNAME} ${ARGS}) once again.\\n"
fi
}
# }}}
# Manage arguments # {{{
# This code can't be in a function due to arguments
if [ ! "${NBARGS}" -eq "0" ]; then
manage_arg="0"
# Parse all options (start with a "-") one by one
while printf -- '%s' "${1}" | grep -q -E -- "^-+"; do
case "${1}" in
--reboot ) ## A reboot was requested (default behaviour)
REBOOT=0
HALT=1
;;
--halt|--poweroff ) ## A poweroff was requested
REBOOT=1
HALT=0
;;
-- ) ## End of options list
## End the while loop
break
;;
* ) ## unknow option
printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
printf '%b\n' "---"
usage
exit 1
;;
esac
## Move to the next argument
shift
manage_arg=$((manage_arg+1))
done
fi
# }}}
main
exit 0