build-vm: add 20-grub-terminal script for setup terminal_output

By default, GRUB_TERMINAL_OUTPUT='gfxterm' is configured. This creates problems for virtual machines and single-board computers, since they need output to console.

build-vm: add 20-grub-terminal script for setup terminal_output
7d631a48 · Anton Midyukov · 99bb9853 · 7d631a48
Commit 7d631a48 authored Dec 06, 2021 by Anton Midyukov
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20-grub-terminal features.in/build-vm/image-scripts.d/20-grub-terminal +14 -0

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--- a/features.in/build-vm/image-scripts.d/20-grub-terminal
+++ b/features.in/build-vm/image-scripts.d/20-grub-terminal
+#!/bin/sh -efu
+
+GRUB_CFG=/etc/sysconfig/grub2
+
+[ -s "$GRUB_CFG" ] || exit 0
+
+GRUBTHEME="$(cat "$GRUB_CFG" |grep '^GRUB_THEME=.*' |tail -n 1)"
+GRUBTHEME="${GRUBTHEME%/*}"
+GRUBTHEME="${GRUBTHEME##*/}"
+
+[ -z "$GRUBTHEME" ] || exit 0
+
+sed '/^GRUB_TERMINAL_OUTPUT=.*/d' -i "$GRUB_CFG"
+echo 'GRUB_TERMINAL_OUTPUT="console"' >> "$GRUB_CFG"