Do not rely on bashisms and behaviour undefined by the POSIX specification. Part 2

Signed-off-by: Ferass 'Vitali64' EL HAFIDI <vitali64pmemail@protonmail.com>

resources/scripts/blobs/download

@@ -1,6 +1,7 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 # SPDX-FileCopyrightText: 2022 Caleb La Grange <thonkpeasant@protonmail.com>
+# SPDX-FileCopyrightText: 2022 Ferass El Hafidi <vitali64pmemail@protonmail.com>
 # SPDX-License-Identifier: GPL-3.0-only
 
 board="${1}"
@@ -16,10 +17,10 @@ Download_needed(){
 	for need in ${needs}; do
 		case ${need} in
 			*ME*)
-				Extract_me || _failed+=" me"
+				Extract_me || _failed="${_failed} me"
 				;;
 			*MRC*)
-				./download mrc || _failed+=" mrc"
+				./download mrc || _failed="${_failed} mrc"
 				;;
 	esac
 	done
@@ -96,23 +97,23 @@ set -- "resources/coreboot/${board}/config/*"
 
 if [ "${CONFIG_HAVE_MRC}" = "y" ]; then
 	printf 'haswell board detected, downloading mrc\n'
-	needs+=" MRC"
+	needs="${needs} MRC"
 
 fi
 
 if [ "${CONFIG_HAVE_IFD_BIN}" = "y" ]; then
 	printf 'board needs intel firmware descriptor\n'
-	needs+=" IFD"
+	needs="${needs} IFD"
 fi
 
 if [ "${CONFIG_HAVE_ME_BIN}" = "y" ]; then
 	printf 'board needs intel management engine\n'
-	needs+=" ME"
+	needs="${needs} ME"
 fi
 
 if [ "${CONFIG_HAVE_GBE_BIN}" = "y" ]; then
 	printf 'board needs gigabit ethernet firmware\n'
-	needs+=" GBE"
+	needs="${needs} GBE"
 fi
 
 # Quickly exit without wasting more time if there are no blobs needed (GM45)
@@ -138,8 +139,7 @@ while read -r line ; do
 		me_dl_bkup=${2}
 		;;
 	esac
-done <<< $(eval "awk ' /\{.*${board_short}.*}{/ {flag=1;next} /\}/{flag=0} flag { print }' resources/blobs/sources")
+done << EOF
-
+$(eval "awk ' /\{.*${board_short}.*}{/ {flag=1;next} /\}/{flag=0} flag { print }' resources/blobs/sources")
+EOF
 Download_needed
-
-

resources/scripts/blobs/extract

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 # script to automate extracting blobs from an existing vendor bios
 
 # SPDX-FileCopyrightText: 2022 Caleb La Grange <thonkpeasant@protonmail.com>

resources/scripts/blobs/inject

@@ -1,6 +1,7 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 # SPDX-FileCopyrightText: 2022 Caleb La Grange <thonkpeasant@protonmail.com>
+# SPDX-FileCopyrightText: 2022 Ferass El Hafidi <vitali64pmemail@protonmail.com>
 # SPDX-License-Identifier: GPL-3.0-only
 
 Fail(){
@@ -53,10 +54,10 @@ Detect_board(){
 	filename=$(basename ${rom})
 	case ${filename} in
 		grub_*)
-		board=$(cut -d '_' -f2-3 <<<${filename})
+		board=$(echo "${filename}" | cut -d '_' -f2-3)
 		;;
 		seabios_withgrub_*)
-		board=$(cut -d '_' -f3-4 <<<${filename})
+		board=$(echo "${filename}" | cut -d '_' -f3-4)
 		;;
 		*)
 		return 1

resources/scripts/download/coreboot

@@ -1,9 +1,10 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 #  helper script: download coreboot
 #
 #	Copyright (C) 2014, 2015, 2016, 2020, 2021 Leah Rowe <info@minifree.org>
 #	Copyright (C) 2022 Alper Nebi Yasak <alpernebiyasak@gmail.com>
+#	Copyright (C) 2022 Ferass El Hafidi <vitali64pmemail@protonmail.com>
 #
 #	This program is free software: you can redistribute it and/or modify
 #	it under the terms of the GNU General Public License as published by
@@ -52,17 +53,17 @@ usage()
 
 # In this script, set -u is used to check for undefined variables, and
 # the test command doesn't do any lazy evaluation, so we can't use
-# a syntax like that: [ $# -eq 1 -a "$1" == "--help" ].
+# a syntax like that: [ $# -eq 1 -a "$1" = "--help" ].
 
-if [ $# -eq 1 ] && [ "$1" == "--help" ] ; then
+if [ $# -eq 1 ] && [ "$1" = "--help" ] ; then
 	usage
 	exit 0
-elif [ $# -eq 1 ] && [ "$1" == "--list-boards" ] ; then
+elif [ $# -eq 1 ] && [ "$1" = "--list-boards" ] ; then
 	list_supported_boards
 	exit 0
 fi
 
-[[ -f build_error ]] && rm -f build_error
+[ -f build_error ] && rm -f build_error
 
 rm -f resources/coreboot/*/seen
 
@@ -90,7 +91,7 @@ downloadfor() {
 		fi
 
 		# This is to override $cbrevision and $cbtree
-		source "resources/coreboot/${board}/board.cfg" || touch ../build_error
+		. "resources/coreboot/${board}/board.cfg" || touch ../build_error
 		if [ -f build_error ]; then
 			printf "ERROR: download/coreboot: problem sourcing %s/board.cfg\n" "${board}"
 			return 1

resources/scripts/download/flashrom

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 #  helper script: downloads flashrom and patches it
 #

resources/scripts/download/gitmodule

@@ -1,6 +1,7 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 # SPDX-FileCopyrightText: 2022 Caleb La Grange <thonkpeasant@protonmail.com>
+# SPDX-FileCopyrightText: 2022 Ferass El Hafidi <vitali64pmemail@protonmail.com>
 # SPDX-License-Identifier: GPL-3.0-only
 
 Print_help(){
@@ -72,8 +73,9 @@ while read -r line ; do
 		bkup_url=${2}
 		;;
 	esac
-done <<< $(eval "awk ' /\{.*${name}.*}{/ {flag=1;next} /\}/{flag=0} flag { print }' resources/git/revisions")
+done << EOF
-
+$(eval "awk ' /\{.*${name}.*}{/ {flag=1;next} /\}/{flag=0} flag { print }' resources/git/revisions")
+EOF
 Check_vars
 tmp_dir=$(mktemp -dt "${name}_XXXXX")
 

resources/scripts/download/grub

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 #  helper script: Downloads GRUB and patches it.
 #

resources/scripts/download/ich9utils

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 #  helper script: downloads ich9utils
 #

resources/scripts/download/me_cleaner

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 #
 #   Copyright (C) 2020 Leah Rowe <info@minifree.org>
 #

resources/scripts/download/memtest86plus

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 #  helper script: Downloads MemTest86+ and patches it
 #

resources/scripts/download/mrc

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env sh
 
 # Download Intel MRC images
 #

resources/scripts/download/seabios

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 #
 #   Copyright (C) 2015, 2016, 2021 Leah Rowe <info@minifree.org>
 #

resources/scripts/download/u-boot

@@ -1,9 +1,10 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 #  helper script: download u-boot
 #
 #	Copyright (C) 2021 Denis 'GNUtoo' Carikli  <GNUtoo@cyberdimension.org>
 #	Copyright (C) 2022 Alper Nebi Yasak <alpernebiyasak@gmail.com>
+#	Copyright (C) 2022 Ferass El Hafidi <vitali64pmemail@protonmail.com>
 #
 #	This program is free software: you can redistribute it and/or modify
 #	it under the terms of the GNU General Public License as published by
@@ -22,7 +23,7 @@
 [ "x${DEBUG+set}" = 'xset' ] && set -v
 set -u -e
 
-[[ -f build_error ]] && rm -f build_error
+[ -f build_error ] && rm -f build_error
 
 list_supported_boards() {
 	for board in resources/u-boot/*; do
@@ -55,7 +56,7 @@ downloadfor() {
 		fi
 
 		# This is to override $ubrevision and $ubtree
-		source "resources/u-boot/${board}/board.cfg" || touch build_error
+		. "resources/u-boot/${board}/board.cfg" || touch build_error
 		if [ -f build_error ]; then
 			printf "ERROR: %s: problem sourcing %s/board.cfg\n" \
 				"download/u-boot" "${board}"
@@ -239,10 +240,10 @@ if [ $# -eq 0 ] ; then
 		download_uboot_board "${board}"
 	done
 	exit 0
-elif [ $# -eq 1 -a "$1" == "--help" ] ; then
+elif [ $# -eq 1 ] && [ "$1" = "--help" ] ; then
 	usage
 	exit 0
-elif [ $# -eq 1 -a "$1" == "--list-boards" ] ; then
+elif [ $# -eq 1 ] && [ "$1" = "--list-boards" ] ; then
 	list_supported_boards
 	exit 0
 elif [ $# -eq 1 ] ; then

resources/scripts/misc/versioncheck

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 #	Copyright (C) 2021 Leah Rowe <info@minifree.org>
 #