all script: use a standard style

Based on the style used for the script in
resources/scripts/helpers/build/release/

30 files changed, 203 insertions, 199 deletions

diff --git a/resources/scripts/helpers/build/clean/bucts b/resources/scripts/helpers/build/clean/bucts
index 80fe3a8..2d3f9bb 100755
--- a/resources/scripts/helpers/build/clean/bucts
+++ b/resources/scripts/helpers/build/clean/bucts
@@ -29,12 +29,12 @@ set -u -e
 
 printf "Cleaning the previous build of bucts\n"
 
-cd bucts/
+cd "bucts/"
 make clean
 
 printf "\n\n"
 
 # done. go back to main directory.
-cd ../
+cd "../"
 
 # ------------------- DONE ----------------------
diff --git a/resources/scripts/helpers/build/clean/coreboot b/resources/scripts/helpers/build/clean/coreboot
index b542989..1eb8ab3 100755
--- a/resources/scripts/helpers/build/clean/coreboot
+++ b/resources/scripts/helpers/build/clean/coreboot
@@ -29,7 +29,7 @@ set -u -e
 
 printf "Cleaning the previous build of the utilities in coreboot\n"
 
-cd coreboot/
+cd "coreboot/"
 
 # ----------------------
 # clean coreboot itself:
@@ -40,11 +40,11 @@ make clean
 # clean the utilities
 # -------------------
 # clean cbfstool
-cd util/cbfstool/
+cd "util/cbfstool/"
 make clean
 
 # go back to coreboot dir
-cd ../../
+cd "../../"
 
 # -------------------------------------
 # clean reference crossGCC for coreboot
@@ -53,7 +53,7 @@ cd ../../
 make crossgcc-clean
 
 # done. go back to main directory
-cd ../
+cd "../"
 
 printf "\n\n"
 
diff --git a/resources/scripts/helpers/build/clean/flashrom b/resources/scripts/helpers/build/clean/flashrom
index 41f5d28..d7eba90 100755
--- a/resources/scripts/helpers/build/clean/flashrom
+++ b/resources/scripts/helpers/build/clean/flashrom
@@ -29,15 +29,15 @@ set -u -e
 
 printf "Cleaning the previous build of flashrom\n"
 
-cd flashrom/
+cd "flashrom/"
 
 make clean
 # remove patched binaries
-rm -f flashrom_lenovobios_sst
-rm -f flashrom_lenovobios_macronix
+rm -f "flashrom_lenovobios_sst"
+rm -f "flashrom_lenovobios_macronix"
 
 # done. go back to main directory
-cd ../
+cd "../"
 
 printf "\n\n"
 
diff --git a/resources/scripts/helpers/build/clean/grub b/resources/scripts/helpers/build/clean/grub
index 9a806a2..cf22c8a 100755
--- a/resources/scripts/helpers/build/clean/grub
+++ b/resources/scripts/helpers/build/clean/grub
@@ -27,13 +27,13 @@ set -u -e
 # clean grub
 # --------------------------------------------------------
 
-cd grub/
+cd "grub/"
 
 printf "Cleaning the previous build of GRUB\n"
-[[ -f Makefile ]] && make distclean
+[[ -f "Makefile" ]] && make distclean
 
 # done. go back to main directoy
-cd ../
+cd "../"
 
 printf "\n\n"
 
diff --git a/resources/scripts/helpers/build/clean/i945pwm b/resources/scripts/helpers/build/clean/i945pwm
index ff383e8..1183859 100755
--- a/resources/scripts/helpers/build/clean/i945pwm
+++ b/resources/scripts/helpers/build/clean/i945pwm
@@ -28,9 +28,9 @@ set -u -e
 # --------------------------------------------------------------------
 
 printf "Cleaning the previous build of i945-pwm\n"
-cd resources/utilities/i945-pwm
+cd "resources/utilities/i945-pwm/"
 make clean
-cd ../../../
+cd "../../../"
 printf "\n\n"
 
 # ------------------- DONE ----------------------
diff --git a/resources/scripts/helpers/build/clean/ich9deblob b/resources/scripts/helpers/build/clean/ich9deblob
index 04d971a..cfca981 100755
--- a/resources/scripts/helpers/build/clean/ich9deblob
+++ b/resources/scripts/helpers/build/clean/ich9deblob
@@ -28,9 +28,9 @@ set -u -e
 # --------------------------------------------------------------------
 
 printf "Cleaning the previous build of ich9deblob\n"
-cd resources/utilities/ich9deblob/
+cd "resources/utilities/ich9deblob/"
 make clean
-cd ../../../
+cd "../../../"
 printf "\n\n"
 
 # ------------------- DONE ----------------------
diff --git a/resources/scripts/helpers/build/clean/memtest86plus b/resources/scripts/helpers/build/clean/memtest86plus
index 3ad8130..ad25915 100755
--- a/resources/scripts/helpers/build/clean/memtest86plus
+++ b/resources/scripts/helpers/build/clean/memtest86plus
@@ -34,7 +34,7 @@ cd "memtest86+-5.01"/
 make clean
 
 # done. go back to main directory
-cd ../
+cd "../"
 
 printf "\n\n"
 
diff --git a/resources/scripts/helpers/build/clean/rom_images b/resources/scripts/helpers/build/clean/rom_images
index 3a7d90c..e952d5c 100755
--- a/resources/scripts/helpers/build/clean/rom_images
+++ b/resources/scripts/helpers/build/clean/rom_images
@@ -28,7 +28,7 @@ set -u -e
 # --------------------------------------------------------
 
 # delete the bin/ directory
-rm -Rf bin/
+rm -Rf "bin/"
 
 printf "Deleted the bin/ directory containing the ROM images.\n\n"
 
diff --git a/resources/scripts/helpers/build/config/corebootmodify b/resources/scripts/helpers/build/config/corebootmodify
index cb22008..bfb6a03 100755
--- a/resources/scripts/helpers/build/config/corebootmodify
+++ b/resources/scripts/helpers/build/config/corebootmodify
@@ -25,22 +25,22 @@
 [ "x${DEBUG+set}" = 'xset' ] && set -v
 set -u -e
 
-cd resources/libreboot/config/
+cd "resources/libreboot/config/"
 
 if [ $# -lt 1 ]; then
-	configs=$(ls)
+	configs="$(ls)"
 else
-	configs=$@
+	configs="$@"
 fi
 
-cd ../../../coreboot/
-for config in $configs; do
-	printf "Updating config for $config\n"
+cd "../../../coreboot/"
+for config in ${configs}; do
+	printf "Updating config for %s\n" "${config}"
 	sleep 5
 	
-	mv ../resources/libreboot/config/$config/config .config
+	mv "../resources/libreboot/config/${config}/config" ".config"
 	make menuconfig
-	mv .config ../resources/libreboot/config/$config/config
+	mv ".config" "../resources/libreboot/config/${config}/config"
 done
 
-cd ../
+cd "../"
diff --git a/resources/scripts/helpers/build/config/corebootreplace b/resources/scripts/helpers/build/config/corebootreplace
index 9be5c9a..781c3bd 100755
--- a/resources/scripts/helpers/build/config/corebootreplace
+++ b/resources/scripts/helpers/build/config/corebootreplace
@@ -25,21 +25,21 @@
 [ "x${DEBUG+set}" = 'xset' ] && set -v
 set -u -e
 
-cd resources/libreboot/config/
+cd "resources/libreboot/config/"
 
 if [ $# -lt 1 ]; then
-	configs=$(ls)
+	configs="$(ls)"
 else
-	configs=$@
+	configs="$@"
 fi
 
-cd ../../../coreboot/
-for config in $configs; do
-	printf "Updating config for $config\n"
+cd "../../../coreboot/"
+for config in ${configs}; do
+	printf "Updating config for %s\n" "${config}"
 	sleep 5
 	
 	make menuconfig
-	mv .config ../resources/libreboot/config/$config/config
+	mv ".config" "../resources/libreboot/config/${config}/config"
 done
 
-cd ../
+cd "../"
diff --git a/resources/scripts/helpers/build/config/corebootupdate b/resources/scripts/helpers/build/config/corebootupdate
index 4e4db74..fa0a1fe 100755
--- a/resources/scripts/helpers/build/config/corebootupdate
+++ b/resources/scripts/helpers/build/config/corebootupdate
@@ -25,22 +25,22 @@
 [ "x${DEBUG+set}" = 'xset' ] && set -v
 set -u -e
 
-cd resources/libreboot/config/
+cd "resources/libreboot/config/"
 
 if [ $# -lt 1 ]; then
-	configs=$(ls)
+	configs="$(ls)"
 else
-	configs=$@
+	configs="$@"
 fi
 
-cd ../../../coreboot/
-for config in $configs; do
-	printf "Updating config for $config\n"
+cd "../../../coreboot/"
+for config in ${configs}; do
+	printf "Updating config for %s\n" "${config}"
 	sleep 5
 	
-	mv ../resources/libreboot/config/$config/config .config
+	mv "../resources/libreboot/config/${config}/config" ".config"
 	make oldconfig
-	mv .config ../resources/libreboot/config/$config/config
+	mv ".config" "../resources/libreboot/config/${config}/config"
 done
 
-cd ../
+cd "../"
diff --git a/resources/scripts/helpers/build/dependencies/parabola b/resources/scripts/helpers/build/dependencies/parabola
index 239f478..6d38429 100755
--- a/resources/scripts/helpers/build/dependencies/parabola
+++ b/resources/scripts/helpers/build/dependencies/parabola
@@ -24,7 +24,7 @@
 set -u -e
 
 if [[ $EUID -ne 0 ]]; then
-   echo "This script must be run as root" 
+   printf "This script must be run as root\n" 
    exit 1
 fi
 
diff --git a/resources/scripts/helpers/build/dependencies/trisquel7 b/resources/scripts/helpers/build/dependencies/trisquel7
index f9c04be..0a3a268 100755
--- a/resources/scripts/helpers/build/dependencies/trisquel7
+++ b/resources/scripts/helpers/build/dependencies/trisquel7
@@ -22,7 +22,7 @@
 set -u -e
 
 if [[ $EUID -ne 0 ]]; then
-   echo "This script must be run as root" 
+   printf "This script must be run as root\n" 
    exit 1
 fi
 
diff --git a/resources/scripts/helpers/build/module/bucts b/resources/scripts/helpers/build/module/bucts
index 34e1a37..8f2a49a 100755
--- a/resources/scripts/helpers/build/module/bucts
+++ b/resources/scripts/helpers/build/module/bucts
@@ -29,7 +29,7 @@ set -u -e
 
 printf "Building bucts\n"
 
-cd bucts/
+cd "bucts/"
 
 buildtype="unknown"
 if (( $# != 1 )); then
@@ -38,19 +38,19 @@ else
 	buildtype="static"
 fi
 
-if [ "$buildtype" = "static" ]; then
-	patch Makefile < ../resources/bucts/patch/staticlink.diff
+if [ "${buildtype}" = "static" ]; then
+	patch "Makefile" < "../resources/bucts/patch/staticlink.diff"
 fi
 
 make clean
 make
 
-if [ "$buildtype" = "static" ]; then
-	patch Makefile -R < ../resources/bucts/patch/staticlink.diff
+if [ "${buildtype}" = "static" ]; then
+	patch "Makefile" -R < "../resources/bucts/patch/staticlink.diff"
 fi
 
 # done. go back to main directory
-cd ../
+cd "../"
 
 printf "\n\n"
 
diff --git a/resources/scripts/helpers/build/module/coreboot b/resources/scripts/helpers/build/module/coreboot
index 5a6174f..3d93c8d 100755
--- a/resources/scripts/helpers/build/module/coreboot
+++ b/resources/scripts/helpers/build/module/coreboot
@@ -29,18 +29,18 @@ set -u -e
 
 printf "Building the utilities in coreboot\n"
 
-cd coreboot
+cd "coreboot/"
 
 # -----------------------------------------
 # Build the utilities required by libreboot
 # -----------------------------------------
 
 # cbfstool
-cd util/cbfstool/
+cd "util/cbfstool/"
 make
 
 # done. go back to coreboot dir
-cd ../../
+cd "../../"
 
 # -------------------------------------
 # build reference crossGCC for coreboot
@@ -48,7 +48,7 @@ cd ../../
 make crossgcc-i386
 
 # done. go back to main libreboot_src directory
-cd ../
+cd "../"
 
 printf "\n\n"
 
diff --git a/resources/scripts/helpers/build/module/flashrom b/resources/scripts/helpers/build/module/flashrom
index a6cf612..0d2d1bf 100755
--- a/resources/scripts/helpers/build/module/flashrom
+++ b/resources/scripts/helpers/build/module/flashrom
@@ -29,20 +29,20 @@ set -u -e
 
 printf "Building flashrom\n"
 
-cd flashrom/
+cd "flashrom/"
 
 make clean
 if (( $# != 1 )); then
 	make
 else
-	if [ "$1" = "static" ]; then
+	if [ "${1}" = "static" ]; then
 		make SHARED=0 CC='gcc -static'
 	else
 		make
 	fi
 fi
 
-mv flashrom flashrom_normal
+mv "flashrom" "flashrom_normal"
 
 # build patched binaries for MX25L1605D and SST25VF016B flash chips
 # - these patches are needed for initial installation on an X60 or T60
@@ -50,18 +50,18 @@ mv flashrom flashrom_normal
 for patchname in "lenovobios_macronix" "lenovobios_sst"
 do
 	# first remove the existing build
-	rm -f flashrom_"$patchname"
+	rm -f "flashrom_${patchname}"
 	
 	# backup the unpatched flashchips.c (it will be patched)
-	cp flashchips.c flashchips.c_
+	cp "flashchips.c" "flashchips.c_"
 	# patch flashchips.c
-	patch flashchips.c < ../resources/flashrom/patch/"$patchname".diff
+	patch "flashchips.c" < "../resources/flashrom/patch/${patchname}.diff"
 	
 	make clean
 	if (( $# != 1 )); then
 		make
 	else
-		if [ "$1" = "static" ]; then
+		if [ "${1}" = "static" ]; then
 			make SHARED=0 CC='gcc -static'
 		else
 			make
@@ -69,16 +69,16 @@ do
 	fi
 	
 	# Rename the binary based on the patch name
-	mv flashrom flashrom_"$patchname"
+	mv "flashrom" "flashrom_${patchname}"
 	
 	# restore unpatched flashchips.c
-	rm -f flashchips.c
-	mv flashchips.c_ flashchips.c
+	rm -f "flashchips.c"
+	mv "flashchips.c_" "flashchips.c"
 done
 
-mv flashrom_normal flashrom
+mv "flashrom_normal" "flashrom"
 
-cd ../
+cd "../"
 
 printf "\n\n"
 
diff --git a/resources/scripts/helpers/build/module/grub b/resources/scripts/helpers/build/module/grub
index 73f36e7..e6b548a 100755
--- a/resources/scripts/helpers/build/module/grub
+++ b/resources/scripts/helpers/build/module/grub
@@ -29,10 +29,10 @@ set -u -e
 
 printf "Building GRUB\n"
 
-cd grub/
+cd "grub/"
 
 # clean it first
-[[ -f Makefile ]] && make clean
+[[ -f Makefile ]] && make distclean
 
 # build grub
 ./autogen.sh
@@ -42,6 +42,6 @@ make
 printf "\n\n"
 
 # done. go back to main directory
-cd ../
+cd "../"
 
 # ------------------- DONE ----------------------
diff --git a/resources/scripts/helpers/build/module/i945pwm b/resources/scripts/helpers/build/module/i945pwm
index 657a7b4..0c5200c 100755
--- a/resources/scripts/helpers/build/module/i945pwm
+++ b/resources/scripts/helpers/build/module/i945pwm
@@ -29,14 +29,14 @@ set -u -e
 
 printf "Building i945-pwm\n"
 
-cd resources/utilities/i945-pwm/
+cd "resources/utilities/i945-pwm/"
 
 make clean
 # build it
 make
 
 # done. go back to main directory
-cd ../../../
+cd "../../../"
 
 printf "\n\n"
 
diff --git a/resources/scripts/helpers/build/module/ich9deblob b/resources/scripts/helpers/build/module/ich9deblob
index 25cf97b..d1d0d2f 100755
--- a/resources/scripts/helpers/build/module/ich9deblob
+++ b/resources/scripts/helpers/build/module/ich9deblob
@@ -29,7 +29,7 @@ set -u -e
 
 printf "Building ich9deblob\n"
 
-cd resources/utilities/ich9deblob
+cd "resources/utilities/ich9deblob/"
 
 # clean it first
 make clean
@@ -38,7 +38,7 @@ make clean
 make
 
 # done. go back to main directory
-cd ../../../
+cd "../../../"
 
 printf "\n\n"
 
diff --git a/resources/scripts/helpers/build/module/memtest86plus b/resources/scripts/helpers/build/module/memtest86plus
index d6f52ef..8fd9c1d 100755
--- a/resources/scripts/helpers/build/module/memtest86plus
+++ b/resources/scripts/helpers/build/module/memtest86plus
@@ -29,7 +29,7 @@ set -u -e
 
 printf "Building MemTest86+\n"
 
-cd "memtest86+-5.01"/
+cd "memtest86+-5.01/"
 
 # clean it first
 make clean
@@ -38,7 +38,7 @@ make clean
 make
 
 # done. go back to main directory
-cd ../
+cd "../"
 
 printf "\n\n"
 
diff --git a/resources/scripts/helpers/build/release/roms b/resources/scripts/helpers/build/release/roms
index 2f46f39..0a840a9 100755
--- a/resources/scripts/helpers/build/release/roms
+++ b/resources/scripts/helpers/build/release/roms
@@ -43,7 +43,7 @@ distname="libreboot_${version}"
 
 printf 'Building ROM image release archives for...\n'
 
-cd bin/
+cd "bin/"
 for board in *; do
 	printf '...%s' "${board}"
 
@@ -61,6 +61,6 @@ for board in *; do
 
 	printf ' OK\n'
 done
-cd ../
+cd "../"
 
 printf 'ROM image release archives are stored in %s/\n' "${romdir}"
diff --git a/resources/scripts/helpers/build/release/src b/resources/scripts/helpers/build/release/src
index f2be4fb..c930395 100755
--- a/resources/scripts/helpers/build/release/src
+++ b/resources/scripts/helpers/build/release/src
@@ -107,6 +107,10 @@ rm -f "${distdir}/mkgbe.h"
 rm -f "${distdir}/ich9fdgbe_8m.bin"
 rm -f "${distdir}/ich9fdgbe_4m.bin"
 
+# Remove any GRUB payload ELF executables that may exist
+rm -f "${distdir}/resources/utilities/grub-assemble/grub_txtmode.elf"
+rm -f "${distdir}/resources/utilities/grub-assemble/grub_vesafb.elf"
+
 printf 'Creating %s.tar.xz\n' "${distdir}"
 (cd "${versiondir}/" && tar -c "${distname}/" | xz -9e >"${distname}.tar.xz")
 
diff --git a/resources/scripts/helpers/build/roms/helper b/resources/scripts/helpers/build/roms/helper
index 82fd518..ada0029 100755
--- a/resources/scripts/helpers/build/roms/helper
+++ b/resources/scripts/helpers/build/roms/helper
@@ -25,15 +25,15 @@
 set -u -e
 
 if (( $# != 1 )); then
-	echo "Usage: ./buildrom-withgrub boardname"
-	echo "Example: ./buildrom-withgrub x60"
-	echo "You need to specify exactly 1 argument"
+	printf "Usage: ./buildrom-withgrub boardname\n"
+	printf "Example: ./buildrom-withgrub x60\n"
+	printf "You need to specify exactly 1 argument\n"
 	exit 1
 fi
 
-printf "Helper script: build ROM images for '$1'\n"
+printf "Helper script: build ROM images for '%s'\n" "${1}"
 
-cd coreboot/
+cd "coreboot/"
 
 if [ -f "../version" ]; then
 	# _src release archive is being used
@@ -47,30 +47,30 @@ printf '%s\n' "${version}" >"lbversion"
 # Build ROM images with text-mode and corebootfb modes.
 # ---------------------------------------------------------------------------------------------------------------
 
-if [ "$1" = "qemu_i440fx_piix4" ] || [ "$1" = "qemu_q35_ich9" ]
+if [ "${1}" = "qemu_i440fx_piix4" ] || [ "${1}" = "qemu_q35_ich9" ]
 then
 	# assume that the default config enable framebuffer mode, duplicate and patch for text-mode
 	# necessary, otherwise it will ask you to enter the Y/X resolution of the framebuffer at build time
-	cp ../resources/libreboot/config/"$1"/config config_vesafb
-	sed 's/CONFIG_FRAMEBUFFER_KEEP_VESA_MODE=y/# CONFIG_FRAMEBUFFER_KEEP_VESA_MODE is not set/' < config_vesafb > config_txtmode
+	cp "../resources/libreboot/config/${1}/config" "config_vesafb"
+	sed 's/CONFIG_FRAMEBUFFER_KEEP_VESA_MODE=y/# CONFIG_FRAMEBUFFER_KEEP_VESA_MODE is not set/' < "config_vesafb" > "config_txtmode"
 else
 	# assume that the default config enables text-mode, duplicate and patch for framebuffer mode
-	cp ../resources/libreboot/config/"$1"/config config_txtmode
-	sed 's/# CONFIG_FRAMEBUFFER_KEEP_VESA_MODE is not set/CONFIG_FRAMEBUFFER_KEEP_VESA_MODE=y/' < config_txtmode > config_vesafb
+	cp "../resources/libreboot/config/${1}/config" "config_txtmode"
+	sed 's/# CONFIG_FRAMEBUFFER_KEEP_VESA_MODE is not set/CONFIG_FRAMEBUFFER_KEEP_VESA_MODE=y/' < "config_txtmode" > "config_vesafb"
 fi
 
 for romtype in txtmode vesafb
 do
 	# skip building txtmode roms for now (memtest86 is broken)
 	# todo: make a new release ASAP, with memtest86+ working again, and text-mode working on GM45
-	if [ "$romtype" = "txtmode" ]; then
+	if [ "${romtype}" = "txtmode" ]; then
 		# TODO: remove this if, once you get memtest86+ working again
 		continue
 	fi
 
-	if [ "$1" = "x200_8mb" ] || [ "$1" = "x200_4mb" ] || [ "$1" = "r400_8mb" ] || [ "$1" = "r400_4mb" ] || [ "$1" = "t400_8mb" ] || [ "$1" = "t400_4mb" ] || [ "$1" = "t500_8mb" ] || [ "$1" = "t500_4mb" ]
+	if [ "${1}" = "x200_8mb" ] || [ "${1}" = "x200_4mb" ] || [ "${1}" = "r400_8mb" ] || [ "${1}" = "r400_4mb" ] || [ "${1}" = "t400_8mb" ] || [ "${1}" = "t400_4mb" ] || [ "${1}" = "t500_8mb" ] || [ "${1}" = "t500_4mb" ]
 		then
-			if [ "$romtype" = "txtmode" ]
+			if [ "${romtype}" = "txtmode" ]
 				then
 					printf "Text mode graphics is currently broken on X200, R400, T400 and T500. Only framebuffer mode works.\n"
 					printf "TODO: offending coreboot commit found (see docs/release.html). Fix text-mode graphics initialization.\n"
@@ -80,25 +80,25 @@ do
 
 	# Build coreboot ROM image
 	make clean
-	mv config_"$romtype" .config
-	mv grub_"$romtype".elf grub.elf
+	mv "config_${romtype}" ".config"
+	mv "grub_${romtype}.elf" "grub.elf"
 	make
-	mv grub.elf grub_"$romtype".elf
-	mv build/coreboot.rom "$1"_"$romtype".rom
+	mv "grub.elf" "grub_${romtype}.elf"
+	mv "build/coreboot.rom" "${1}_${romtype}.rom"
 	# .config no longer needed
-	rm -f .config
+	rm -f ".config"
 
 	# Add version information to this image
-	./util/cbfstool/cbfstool "$1"_"$romtype".rom add -f lbversion -n lbversion -t raw
+	./util/cbfstool/cbfstool ${1}_${romtype}.rom add -f lbversion -n lbversion -t raw
 
 	# Add the background image
 	if [ "$romtype" = "vesafb" ]
 	then
 		if [ "$1" = "macbook21" ] || [ "$1" = "x200_4mb" ] || [ "$1" = "x200_8mb" ] || [ "$1" = "r400_4mb" ] || [ "$1" = "r400_8mb" ] || [ "$1" = "t400_4mb" ] || [ "$1" = "t400_8mb" ] || [ "$1" = "t500_4mb" ] || [ "$1" = "t500_8mb" ]
 		then
-			./util/cbfstool/cbfstool "$1"_"$romtype".rom add -f ../resources/grub/background/background1280x800.png -n background.png -t raw
+			./util/cbfstool/cbfstool ${1}_${romtype}.rom add -f ../resources/grub/background/background1280x800.png -n background.png -t raw
 		else
-			./util/cbfstool/cbfstool "$1"_"$romtype".rom add -f ../resources/grub/background/background1024x768.png -n background.png -t raw
+			./util/cbfstool/cbfstool ${1}_${romtype}.rom add -f ../resources/grub/background/background1024x768.png -n background.png -t raw
 		fi
 	fi
 
@@ -106,37 +106,37 @@ do
 	for keymap in $(ls ../resources/utilities/grub-assemble/keymap/original)
 	do
 		# copy the images based on the keymap
-		cp "$1"_"$romtype".rom "$1"_"$keymap"_"$romtype".rom
+		cp "${1}_${romtype}.rom" "${1}_${keymap}_${romtype}.rom"
 
 		# Insert grub config into the image
-		./util/cbfstool/cbfstool "$1"_"$keymap"_"$romtype".rom add -f grub_"$keymap"_"$romtype".cfg -n grub.cfg -t raw
+		./util/cbfstool/cbfstool ${1}_${keymap}_${romtype}.rom add -f grub_${keymap}_${romtype}.cfg -n grub.cfg -t raw
 		# Insert grub test config into the image (for the user to test modifications to before modifying the main one)
-		./util/cbfstool/cbfstool "$1"_"$keymap"_"$romtype".rom add -f grub_"$keymap"_"$romtype"_test.cfg -n grubtest.cfg -t raw
+		./util/cbfstool/cbfstool ${1}_${keymap}_${romtype}.rom add -f grub_${keymap}_${romtype}_test.cfg -n grubtest.cfg -t raw
 	done
 
 	# This config-less ROM is no longer needed
-	rm -Rf "$1"_"$romtype".rom
+	rm -f "${1}_${romtype}.rom"
 done
 
 # Now we clean up and prepare the bin directory containing all the images
 # ----------------------------------------------------------------------------------------------------------------------------
 
 # prepare directory for new ROM images
-rm -Rf "$1"
-mkdir "$1"
+rm -Rf "${1}/"
+mkdir "${1}/"
 # move the ROM's into the newly created directory
-mv "$1"*rom "$1"
+mv "${1}"*.rom "${1}/"
 
 # delete the old ROM's from ../bin
-rm -Rf ../bin/"$1"
+rm -Rf "../bin/${1}/"
 # now put the new ROM's in ./bin
-mv "$1" ../bin
+mv "${1}/" "../bin"
 
 # libreboot version file no longer needed
 rm -f "lbversion"
 
 # go back to main source directory
-cd ../
+cd "../"
 
 printf "\n\n"
 
diff --git a/resources/scripts/helpers/build/roms/withgrub b/resources/scripts/helpers/build/roms/withgrub
index 6c1c8fa..c3b33c5 100755
--- a/resources/scripts/helpers/build/roms/withgrub
+++ b/resources/scripts/helpers/build/roms/withgrub
@@ -27,9 +27,9 @@ set -u -e
 
 printf "Building ROM images with the GRUB payload\n"
 
-if [ ! -d "bin" ]
+if [ ! -d "bin/" ]
 then
-	mkdir bin/
+	mkdir "bin/"
 fi
 
 boards="unknown"
@@ -44,71 +44,71 @@ fi
 
 # Put GRUB payloads and config files
 # in the coreboot directory, ready for next step
-cd coreboot/
+cd "coreboot/"
 for romtype in txtmode vesafb
 do
-	cd ../resources/utilities/grub-assemble
-	./gen.sh "$romtype"
-	rm -f ../../../coreboot/grub_"$romtype".elf
-	mv grub_"$romtype".elf ../../../coreboot/
-	cd ../../../coreboot
+	cd "../resources/utilities/grub-assemble"
+	./gen.sh ${romtype}
+	rm -f "../../../coreboot/grub_${romtype}.elf"
+	mv "grub_${romtype}.elf" "../../../coreboot/"
+	cd "../../../coreboot"
 
 	# GRUB configuration files
-	for keymap in $(ls ../resources/utilities/grub-assemble/keymap/original)
+	for keymap in $(ls "../resources/utilities/grub-assemble/keymap/original/")
 	do
-		cat ../resources/grub/config/extra/common.cfg > grub_"$keymap"_"$romtype".cfg
-		cat ../resources/grub/config/extra/"$romtype".cfg >> grub_"$keymap"_"$romtype".cfg
-		echo "keymap $keymap" >> grub_"$keymap"_"$romtype".cfg
-		cat ../resources/grub/config/menuentries/common.cfg >> grub_"$keymap"_"$romtype".cfg
-		cat ../resources/grub/config/menuentries/"$romtype".cfg >> grub_"$keymap"_"$romtype".cfg
+		cat "../resources/grub/config/extra/common.cfg" > "grub_${keymap}_${romtype}.cfg"
+		cat "../resources/grub/config/extra/${romtype}.cfg" >> "grub_${keymap}_${romtype}.cfg"
+		printf "keymap %s\n" "${keymap}" >> "grub_${keymap}_${romtype}.cfg"
+		cat "../resources/grub/config/menuentries/common.cfg" >> "grub_${keymap}_${romtype}.cfg"
+		cat "../resources/grub/config/menuentries/${romtype}.cfg" >> "grub_${keymap}_${romtype}.cfg"
 		# grubtest.cfg should be able to switch back to grub.cfg
-		sed 's/grubtest.cfg/grub.cfg/' < grub_"$keymap"_"$romtype".cfg > grub_"$keymap"_"$romtype"_test.cfg
+		sed 's/grubtest.cfg/grub.cfg/' < "grub_${keymap}_${romtype}.cfg" > "grub_${keymap}_${romtype}_test.cfg"
 	done
 done
 cd ../
 
 # Build ROM images for supported boards
-for board in $boards
+for board in ${boards}
 do
-	if [ -f resources/libreboot/config/"$board"/config ]; then
-		./build roms helper $board
+	if [ -f "resources/libreboot/config/${board}/config" ]; then
+		./build roms helper ${board}
 	fi
 done
 
 # Needed on i945 systems for the bucts/dd trick (documented)
 # This enables the ROM to be flashed over the lenovo bios firmware
-for i945board in x60 t60
+for i945board in "x60" "t60"
 do
-	if [ -d bin/"$i945board"/ ]; then
-		cd bin/"$i945board"/
+	if [ -d "bin/${i945board}/" ]; then
+		cd "bin/${i945board}/"
 		for i945rom in $(ls)
 		do
-			dd if="$i945rom" of=top64k.bin bs=1 skip=$[$(stat -c %s "$i945rom") - 0x10000] count=64k
-			dd if=top64k.bin of="$i945rom" bs=1 seek=$[$(stat -c %s "$i945rom") - 0x20000] count=64k conv=notrunc
+			dd if="${i945rom}" of=top64k.bin bs=1 skip=$[$(stat -c %s "${i945rom}") - 0x10000] count=64k
+			dd if=top64k.bin of="${i945rom}" bs=1 seek=$[$(stat -c %s "${i945rom}") - 0x20000] count=64k conv=notrunc
 			rm -f top64k.bin
 		done
-		cd ../../
+		cd "../../"
 	fi
 done
 
 # Build the deblobbed descriptor+gbe regions for GM45/ICH9M targets.
 # Then put them in the ROM images.
-if [ -d bin/ ]; then
-	cd bin/
+if [ -d "bin/" ]; then
+	cd "bin/"
 	for board in "x200" "r400" "t400" "t500"
 	do
 		for romsize in "4m" "8m"
 		do	
-			if [ -d "$board"_"$romsize"b/ ]; then
-				cd "$board"_"$romsize"b/
+			if [ -d "${board}_${romsize}b/" ]; then
+				cd "${board}_${romsize}b/"
 				../../resources/utilities/ich9deblob/ich9gen
 				for rom in $(ls)
 				do
-					dd if=ich9fdgbe_"$romsize".bin of="$rom" bs=1 count=12k conv=notrunc
+					dd if="ich9fdgbe_${romsize}.bin" of="${rom}" bs=1 count=12k conv=notrunc
 				done
-				rm -f ich9fdgbe_4m.bin
-				rm -f ich9fdgbe_8m.bin
-				cd ../
+				rm -f "ich9fdgbe_4m.bin"
+				rm -f "ich9fdgbe_8m.bin"
+				cd "../"
 			fi
 		done
 	done
@@ -116,8 +116,8 @@ if [ -d bin/ ]; then
 fi
 
 # The GRUB payloads are no longer needed
-rm -f coreboot/grub_vesafb.elf
-rm -f coreboot/grub_txtmode.elf
+rm -f "coreboot/grub_vesafb.elf"
+rm -f "coreboot/grub_txtmode.elf"
 # The GRUB configs are no longer needed
 rm -f coreboot/grub*cfg
 
diff --git a/resources/scripts/helpers/download/bucts b/resources/scripts/helpers/download/bucts
index 2fc543f..9448965 100755
--- a/resources/scripts/helpers/download/bucts
+++ b/resources/scripts/helpers/download/bucts
@@ -31,7 +31,7 @@ set -u -e
 
 printf "Downloading bucts\n"
 
-rm -Rf bucts
+rm -Rf "bucts/"
 
 # Get bucts
 # ------------------------------------------------------------------------------
@@ -40,7 +40,7 @@ rm -Rf bucts
 git clone git://git.stuge.se/bucts.git
 
 # modifications are required
-cd bucts
+cd "bucts/"
 
 # Reset to the last commit that was tested
 # ------------------------------------------------------------------------------
@@ -50,7 +50,7 @@ git reset --hard dc27919d7a66a6e8685ce07c71aefa4f03ef7c07
 git am "../resources/bucts/patch/0001-Makefile-don-t-use-git.patch"
 
 # we're done
-cd ../
+cd "../"
 
 printf "\n\n"
 
diff --git a/resources/scripts/helpers/download/coreboot b/resources/scripts/helpers/download/coreboot
index 0df86a7..c923fb2 100755
--- a/resources/scripts/helpers/download/coreboot
+++ b/resources/scripts/helpers/download/coreboot
@@ -32,7 +32,7 @@ printf "Downloading coreboot, patching coreboot and deblobbing coreboot\n"
 # Remove the old version that may exist
 # ------------------------------------------------------------------------------
 
-rm -Rf coreboot
+rm -Rf "coreboot/"
 
 # Get latest coreboot:
 # ------------------------------------------------------------------------------
@@ -41,7 +41,7 @@ rm -Rf coreboot
 git clone http://review.coreboot.org/coreboot
 
 # there are modifications required
-cd coreboot/
+cd "coreboot/"
 
 # reset to previously tested revision
 git reset --hard e19c8b0091022ae3f490601aed0c290cd5171b79
@@ -53,17 +53,17 @@ git reset --hard e19c8b0091022ae3f490601aed0c290cd5171b79
 
 printf "Downloading patches for T400 (hybrid graphics and other fixes)"
 # git fetch http://review.coreboot.org/coreboot refs/changes/31/9331/7 && git checkout FETCH_HEAD
-git am ../resources/libreboot/patch/0001-src-southbridge-intel-i82801ix-Add-GPIO-register-loc.patch
-git am ../resources/libreboot/patch/0002-northbridge-intel-gm45-gma-Add-backlight-control-reg.patch
-git am ../resources/libreboot/patch/0003-northbridge-intel-gm45-gma-Minor-cleanup.patch
-git am ../resources/libreboot/patch/0004-southbridge-intel-common-spi-Add-Flash-lockdown-opti.patch
-git am ../resources/libreboot/patch/0005-mainboard-lenovo-x200-Use-defines-from-southbridge-f.patch
-git am ../resources/libreboot/patch/0006-mainboard-lenovo-x200-Add-power_on_after_fail-NVRAM-.patch
-git am ../resources/libreboot/patch/0007-mainboards-lenovo-Copy-X200-board-to-T400-for-future.patch
-git am ../resources/libreboot/patch/0008-mainboards-lenovo-t400-Enable-serial-debug-option-fo.patch
-git am ../resources/libreboot/patch/0009-mainboard-lenovo-t400-Add-initial-hybrid-graphics-su.patch
-git am ../resources/libreboot/patch/0010-mainboard-lenovo-t400-Add-initial-ATPX-ACPI-implemen.patch
-git am ../resources/libreboot/patch/0011-mainboard-lenovo-t400-Increase-backlight-frequency-t.patch
+git am "../resources/libreboot/patch/0001-src-southbridge-intel-i82801ix-Add-GPIO-register-loc.patch"
+git am "../resources/libreboot/patch/0002-northbridge-intel-gm45-gma-Add-backlight-control-reg.patch"
+git am "../resources/libreboot/patch/0003-northbridge-intel-gm45-gma-Minor-cleanup.patch"
+git am "../resources/libreboot/patch/0004-southbridge-intel-common-spi-Add-Flash-lockdown-opti.patch"
+git am "../resources/libreboot/patch/0005-mainboard-lenovo-x200-Use-defines-from-southbridge-f.patch"
+git am "../resources/libreboot/patch/0006-mainboard-lenovo-x200-Add-power_on_after_fail-NVRAM-.patch"
+git am "../resources/libreboot/patch/0007-mainboards-lenovo-Copy-X200-board-to-T400-for-future.patch"
+git am "../resources/libreboot/patch/0008-mainboards-lenovo-t400-Enable-serial-debug-option-fo.patch"
+git am "../resources/libreboot/patch/0009-mainboard-lenovo-t400-Add-initial-hybrid-graphics-su.patch"
+git am "../resources/libreboot/patch/0010-mainboard-lenovo-t400-Add-initial-ATPX-ACPI-implemen.patch"
+git am "../resources/libreboot/patch/0011-mainboard-lenovo-t400-Increase-backlight-frequency-t.patch"
 
 # Downloads these patches:
 # http://review.coreboot.org/#/c/9318/
@@ -80,33 +80,33 @@ git am ../resources/libreboot/patch/0011-mainboard-lenovo-t400-Increase-backligh
 
 # Related - hard-code enable integrated-only GPU (GM45):
 # git fetch http://review.coreboot.org/coreboot refs/changes/90/10090/2 && git cherry-pick FETCH_HEAD
-git am ../resources/libreboot/patch/0012-NOTFORMERGE-lenovo-t400-hard-code-enable-integrated-.patch
+git am "../resources/libreboot/patch/0012-NOTFORMERGE-lenovo-t400-hard-code-enable-integrated-.patch"
 
 # ----
 
 printf "Text mode patch for X60 native graphics (main patch already merged in coreboot. See 6723 on coreboot gerrit)\n"
 # git fetch http://review.coreboot.org/coreboot refs/changes/25/6725/3 && git cherry-pick FETCH_HEAD
-git am ../resources/libreboot/patch/0013-lenovo-x60-Enable-text-mode-native-gfx-init.patch
+git am "../resources/libreboot/patch/0013-lenovo-x60-Enable-text-mode-native-gfx-init.patch"
 
 printf "lenovo/x60: Enable legacy brightness controls (native graphics)\n"
 # git fetch http://review.coreboot.org/coreboot refs/changes/48/7048/4 && git cherry-pick FETCH_HEAD
-git am ../resources/libreboot/patch/0014-lenovo-x60-Enable-legacy-brightness-controls-native-.patch
+git am "../resources/libreboot/patch/0014-lenovo-x60-Enable-legacy-brightness-controls-native-.patch"
 
 printf "Enable T60 native graphics\n"
 # git fetch http://review.coreboot.org/coreboot refs/changes/45/5345/9 && git cherry-pick FETCH_HEAD
-git am ../resources/libreboot/patch/0015-lenovo-t60-Enable-native-intel-gfx-init.patch
+git am "../resources/libreboot/patch/0015-lenovo-t60-Enable-native-intel-gfx-init.patch"
 
 printf "Enable text-mode graphics for T60\n"
 # git fetch http://review.coreboot.org/coreboot refs/changes/50/7050/2 && git cherry-pick FETCH_HEAD
-git am ../resources/libreboot/patch/0016-lenovo-t60-Enable-text-mode-native-gfx-init.patch
+git am "../resources/libreboot/patch/0016-lenovo-t60-Enable-text-mode-native-gfx-init.patch"
 
 printf "lenovo/t60: Enable legacy brightness controls (native graphics)\n"
 # git fetch http://review.coreboot.org/coreboot refs/changes/51/7051/1 && git cherry-pick FETCH_HEAD
-git am ../resources/libreboot/patch/0017-lenovo-t60-Enable-legacy-brightness-controls-native-.patch
+git am "../resources/libreboot/patch/0017-lenovo-t60-Enable-legacy-brightness-controls-native-.patch"
 
 printf "ec/lenovo/h8: permanently enable wifi/trackpoint/touchpad/bluetooth/wwan\n"
 # git fetch http://review.coreboot.org/coreboot refs/changes/58/7058/7 && git cherry-pick FETCH_HEAD
-git am ../resources/libreboot/patch/0018-NOTFORMERGE-ec-lenovo-h8-wlan-trackpoint-touchpad-bl.patch
+git am "../resources/libreboot/patch/0018-NOTFORMERGE-ec-lenovo-h8-wlan-trackpoint-touchpad-bl.patch"
 
 # printf "i945: permanently set tft_brightness to 0xff. this fixes the issue with X60 and 'scrolling' backlight\n"
 # git fetch http://review.coreboot.org/coreboot refs/changes/61/7561/2 && git cherry-pick FETCH_HEAD
@@ -116,36 +116,36 @@ git am ../resources/libreboot/patch/0018-NOTFORMERGE-ec-lenovo-h8-wlan-trackpoin
 
 printf "northbridge/gm45/raminit.c: enable GS45 high-perf (i.e. add X200S support to libreboot)\n"
 # git fetch http://review.coreboot.org/coreboot refs/changes/86/7786/1 && git cherry-pick FETCH_HEAD
-git am ../resources/libreboot/patch/0019-NOTFORMERGE-northbridge-gm45-raminit.c-enable-GS45-h.patch
+git am "../resources/libreboot/patch/0019-NOTFORMERGE-northbridge-gm45-raminit.c-enable-GS45-h.patch"
 
 printf "fix uneven backlight on X200 (when setting brightness low)\n"
 # git fetch http://review.coreboot.org/coreboot refs/changes/79/7979/1 && git cherry-pick FETCH_HEAD
-git am ../resources/libreboot/patch/0020-gm45-fix-uneven-backlight-native-gfx-init.patch
+git am "../resources/libreboot/patch/0020-gm45-fix-uneven-backlight-native-gfx-init.patch"
 
 printf "ThinkPad R400 support (clone of the T400)\n"
 # git fetch http://review.coreboot.org/coreboot refs/changes/93/8393/3 && git cherry-pick FETCH_HEAD
-git am ../resources/libreboot/patch/0021-lenovo-r400-Add-clone-of-Lenovo-T400.patch
+git am "../resources/libreboot/patch/0021-lenovo-r400-Add-clone-of-Lenovo-T400.patch"
 
 printf "ThinkPad T500 (depends on T400 patch)\n"
 # git fetch http://review.coreboot.org/coreboot refs/changes/81/9181/2 && git cherry-pick FETCH_HEAD
-git am ../resources/libreboot/patch/0022-New-mainboard-Lenovo-T500.patch
+git am "../resources/libreboot/patch/0022-New-mainboard-Lenovo-T500.patch"
 
 # BACKPORTED
 # This was merged in master, but this is an older revision. For now, simply backport it (X200 digitizer patch)
 printf "ThinkPad X200 Tablet digitizer patch (backported)\n"
 # git fetch http://review.coreboot.org/coreboot refs/changes/08/10208/4 && git cherry-pick FETCH_HEAD
-git am ../resources/libreboot/patch/0023-lenovo-x200-Enable-wacom-digitizer-support-for-x200t.patch
+git am "../resources/libreboot/patch/0023-lenovo-x200-Enable-wacom-digitizer-support-for-x200t.patch"
 
 # Run coreboot-libre deblob scripts
 # ------------------------------------------------------------------------------
 
 printf "Deleting .git* in coreboot/ (history inside .git contains the blobs that were deleted)\n"
-rm -Rf .git
-rm -f .gitreview
-rm -f .gitmodules
-rm -f .gitignore
+rm -Rf ".git/"
+rm -f ".gitreview"
+rm -f ".gitmodules"
+rm -f ".gitignore"
 
-cd ../
+cd "../"
 
 printf "Deblobbing coreboot\n"
 ./resources/utilities/coreboot-libre/deblob
diff --git a/resources/scripts/helpers/download/flashrom b/resources/scripts/helpers/download/flashrom
index 093aac8..8006432 100755
--- a/resources/scripts/helpers/download/flashrom
+++ b/resources/scripts/helpers/download/flashrom
@@ -31,7 +31,7 @@ set -u -e
 
 printf "Downloading flashrom\n"
 
-rm -Rf flashrom
+rm -Rf "flashrom/"
 
 # Get flashrom
 # ------------------------------------------------------------------------------
@@ -41,18 +41,18 @@ svn co -r 1889 svn://flashrom.org/flashrom/trunk flashrom
 
 # apply patches
 
-cd flashrom/
+cd "flashrom/"
 
 printf "Enabling whitelist for X200S, X200 Tablet, T400, T500 and R400\n"
-patch board_enable.c < ../resources/flashrom/patch/x200s_x200t_t400_t500_r400_whitelist.diff
+patch "board_enable.c" < "../resources/flashrom/patch/x200s_x200t_t400_t500_r400_whitelist.diff"
 
 # Remove redundant definitions for the flash chips that
 # supported libreboot machines use. This removes the need
 # for the user to run with the "-c" argument on these machines
 printf "Patching flashchips.c to remove the redundant entries\n"
-patch flashchips.c < ../resources/flashrom/patch/purged_chips.diff
+patch "flashchips.c" < "../resources/flashrom/patch/purged_chips.diff"
 
-cd ../
+cd "../"
 
 printf "\n\n"
 
diff --git a/resources/scripts/helpers/download/grub b/resources/scripts/helpers/download/grub
index e35d731..70835f2 100755
--- a/resources/scripts/helpers/download/grub
+++ b/resources/scripts/helpers/download/grub
@@ -31,7 +31,7 @@ set -u -e
 
 printf "Downloading GRUB\n"
 
-rm -Rf grub
+rm -Rf "grub/"
 
 # Get latest GRUB
 # ------------------------------------------------------------------------------
@@ -40,7 +40,7 @@ rm -Rf grub
 git clone git://git.savannah.gnu.org/grub.git
 
 # modifications are required
-cd grub
+cd "grub/"
 
 # Reset to the last commit that was tested
 # ------------------------------------------------------------------------------
@@ -58,7 +58,7 @@ git am "../resources/grub/patch/0001-grub-core-normal-main.c-Display-FREE-AS-IN-
 # https://people.torproject.org/~lunar/volatile/2015-03-17-e3Yp1d7FifQ/0001-lib-syslinux_parse-add-support-for-vesa-menu.c32.patch
 git am "../resources/grub/patch/0002-lib-syslinux_parse-add-support-for-vesa-menu.c32.patch"
 
-cd ../
+cd "../"
 printf "\n\n"
 
 # ------------------- DONE ----------------------
diff --git a/resources/scripts/helpers/download/memtest86plus b/resources/scripts/helpers/download/memtest86plus
index 9fa20dd..c478122 100755
--- a/resources/scripts/helpers/download/memtest86plus
+++ b/resources/scripts/helpers/download/memtest86plus
@@ -32,7 +32,7 @@ set -u -e
 
 printf "Downloading MemTest86+\n"
 
-rm -Rf "memtest86+-5.01"
+rm -Rf "memtest86+-5.01/"
 
 # Get latest memtest86+:
 # ------------------------------------------------------------------------------
@@ -47,23 +47,23 @@ tar -xzf "memtest86+-5.01.tar.gz"
 rm -f "memtest86+-5.01.tar.gz"
 
 # there are modifications required
-cd "memtest86+-5.01"/
+cd "memtest86+-5.01/"
 
 # Apply necessary patches
 # ------------------------------------------------------------------------------
 
 # place the right config
-rm -f config.h
-cp ../resources/memtest86/patch/config.h .
+rm -f "config.h"
+cp "../resources/memtest86/patch/config.h" .
 
 # place the right Makefile
-rm -f Makefile
-cp ../resources/memtest86/patch/Makefile .
+rm -f "Makefile"
+cp "../resources/memtest86/patch/Makefile" .
 
 # (diff them with defaults to see what changed)
 
 # we're done
-cd ../
+cd "../"
 
 printf "\n\n"
 
diff --git a/resources/scripts/misc/powertop.trisquel7 b/resources/scripts/misc/powertop.trisquel7
index 670c379..25bb597 100755
--- a/resources/scripts/misc/powertop.trisquel7
+++ b/resources/scripts/misc/powertop.trisquel7
@@ -22,7 +22,7 @@
 set -u -e
 
 if [[ $EUID -ne 0 ]]; then
-   echo "This script must be run as root" 
+   printf "This script must be run as root\n" 
    exit 1
 fi
 
@@ -33,19 +33,19 @@ apt-get -y install powertop
 # Remove startup symlink if it exists
 update-rc.d powertop remove
 # Remove previous file if it exists
-rm  -rf /etc/init.d/powertop
+rm -Rf "/etc/init.d/powertop"
 
 # write the correct commands there:
-echo "#!/bin/sh" > /etc/init.d/powertop
-echo "/usr/sbin/powertop --auto-tune" >> /etc/init.d/powertop
+printf "#!/bin/sh\n" > "/etc/init.d/powertop"
+printf "/usr/sbin/powertop --auto-tune\n" >> "/etc/init.d/powertop"
 
 # make it executable:
-chmod +x /etc/init.d/powertop
+chmod +x "/etc/init.d/powertop"
 
 # Add the service to make it run automatically at boot time:
 update-rc.d powertop defaults
 
 # Run powertop now and tell the user
 powertop --auto-tune
-echo "Done. Run 'powertop --auto-tune' now. This will also run automatically at boot time. Run it again at any time, if needed. This has also been done for you just now."
+printf "Done. Run 'powertop --auto-tune' now. This will also run automatically at boot time. Run it again at any time, if needed. This has also been done for you just now.\n"