指定したOSで再起動するスクリプト

rebootos

#!/usr/bin/env bash
set -Eeu -o pipefail
# shellcheck source=/dev/null
source /dev/stdin < <(curl -sL "https://github.com/Hayao0819/FasBashLib/releases/download/v0.2.5/fasbashlib.sh")
(( "$UID" == 0 )) || { Msg.Err "Please run as root."; exit 1; }
readarray -t EntryList < <(awk -F\' '/menuentry / {print $2}' /boot/grub/grub.cfg | grep -v "^$")
LastEntry=$(
    last="$(grub-editenv list  | cut -d "=" -f 2-)"
    [[ -n "${last-""}" ]] || exit 0
    eval "Array=($(grep "$last" /boot/grub/grub.cfg))"
    # shellcheck disable=SC2154
    echo "${Array[1]}"
)
grub-reboot "$(Choice -d "$LastEntry" -p "Select an entry to boot:" "${EntryList[@]}")" && reboot