Scripts for fixing configs broken by installer

fix_grub.sh

#!/bin/bash

FILE_GRUB_DEFAULT=/etc/default/grub
FILE_GRUB_CONF=/boot/grub/grub.cfg
FILE_GRUB_BACKUP=.grub.cfg.bak

if [ ! "$(id -u)" = "0" ]
then
	echo "Script must be run as root!"
else
	force=
	if [ "$#" -ge 1 -a "$1" = "-f" ]
	then
		force=1
	fi
	if [ -f "$FILE_GRUB_BACKUP" -a -z "$force" ]
	then
		echo "Backup file already exists in '$FILE_GRUB_BACKUP'!"
		echo "Remove backup file or force with -f"
	else
		cp "$FILE_GRUB_CONF" "$FILE_GRUB_BACKUP"
		echo >> "$FILE_GRUB_CONF"
		echo "### BEGIN custom script '$0' ###" >> "$FILE_GRUB_CONF"
		. "$FILE_GRUB_DEFAULT"
		if [ -n "$GRUB_COLOR_NORMAL" ]
		then
			echo "set color_normal=$GRUB_COLOR_NORMAL" >> "$FILE_GRUB_CONF"
		fi
		if [ -n "$GRUB_COLOR_HIGHLIGHT" ]
		then
			echo "set color_highlight=$GRUB_COLOR_HIGHLIGHT" >> "$FILE_GRUB_CONF"
		fi
		if [ -n "$GRUB_MENU_COLOR_NORMAL" ]
		then
			echo "set menu_color_normal=$GRUB_MENU_COLOR_NORMAL" >> "$FILE_GRUB_CONF"
		fi
		if [ -n "$GRUB_MENU_COLOR_HIGHLIGHT" ]
		then
			echo "set menu_color_highlight=$GRUB_MENU_COLOR_HIGHLIGHT" >> "$FILE_GRUB_CONF"
		fi
		echo "### END custom script '$0' ###" >> "$FILE_GRUB_CONF"
		echo "Added neccessary changes"
		echo "Original backed up at '$FILE_GRUB_BACKUP'"
	fi
fi

fix_pulseaudio.sh

#!/bin/bash

PULSE_INIT=/etc/init.d/pulseaudio
PULSE_TEMP=pulseaudio.temp
PULSE_BU=.pulseaudio.bak

P_START='if \[ "\$PULSEAUDIO_SYSTEM_START" != "'
P_END='" ]'
PATTERN="$P_START"1"$P_END"
PATTERN_REPLACED="$P_START"0"$P_END"
PATTERN_BACKREF='\('"$P_START"'\)'1'\('"$P_END"'\)'
PATTERN_CLOSE='^fi$'

if [ ! "$(id -u)" -eq "0" ]
then
	echo "Script must be run as root!"
else
	force=
	if [ "$#" -ge 1 -a "$1" = "-f" ]
	then
		force=1
	fi
	if [ -f "$PULSE_BU" -a -z "$force" ]
	then
		echo "Backup from previous run already exists in '$PULSE_BU'!"
		echo "Remove remove backup file or force with -f"
	else
		sed -e 's/'"$PATTERN_BACKREF"'/\10\2/' \
		-e 's/system-wide/OLD_SYS/g' \
		-e 's/per-user/system-wide/g' \
		-e 's/OLD_SYS/per-user/g' \
		-e '/'"$PATTERN_REPLACED"'/,/'"$PATTERN_CLOSE"'/ s/\(\s*\)exit 0/else\n\1exit 0/g' \
		"$PULSE_INIT" > "$PULSE_TEMP"
		cp "$PULSE_INIT" "$PULSE_BU"
		mv "$PULSE_TEMP" "$PULSE_INIT"
		chmod 755 "$PULSE_INIT"
		echo "Made changes to '$PULSE_INIT'"
		echo "Backup is in '$PULSE_BU'"
		echo "Examine to ensure correctness"
	fi
fi