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Update changescrn
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Nathaniel van Diepen
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GitHub
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178
changescrn
178
changescrn
@@ -1,80 +1,138 @@
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#! /bin/bash
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#Backup existing screens: changescrn -b
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#Change Screen: changescrn -c [SCREEN] -n [PATH TO NEW SCREEN]
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#Restore original screens: changescrn -r [SCREEN] (use option 'all' to restore all screens at once)
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#[SCREEN] options: batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended
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#!/bin/bash
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BACKUP="/opt/usr/share/backupscrns"
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SOURCE="/usr/share/remarkable"
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while getopts ":r :c :b :h" opt; do
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usage(){
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echo "changescrn [-b] [-r <screen>|all] [-c <screen> <image-path>]"
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echo " -b Backup current screens"
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echo " -r Restore a screen, or all screens from the last backup"
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echo " -c Change a specific screen"
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echo ""
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echo " Valid options for screen:"
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echo " batteryempty lowbattery overheating poweroff rebooting"
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echo " recovery splash starting suspended"
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}
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valid(){
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case $1 in
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batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended)
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return 0
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;;
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esac
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return 1
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}
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main(){
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local r=
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local c=
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local b=0
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while getopts "r:c:bh" opt; do
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case $opt in
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r) #Restores original screen
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case $2 in
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batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended)
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echo "restoring $2.png..."
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cp $BACKUP/$2.png $SOURCE >&2
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echo "Done!"
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;;
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all)
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echo "Restoring all screens..."
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cp $BACKUP/*.png $SOURCE
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echo "Done!"
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;;
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*)
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echo "Screen Options: batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended | all"
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r)
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if [[ -z "$OPTARG" ]];then
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echo "Screen missing" >&2
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usage
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exit 1
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elif [[ "$OPTARG" != "all" ]] && ! valid "$OPTARG";then
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echo "Unknown screen: $OPTARG" >&2
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usage
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exit 1
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fi
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r="$OPTARG"
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;;
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esac
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;;
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c) #Changes screen
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case $2 in
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batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended)
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case $3 in
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*)
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cp $3 $SOURCE/$2.png
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echo "$2 screen replaced"
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;;
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"")
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echo "Usage: changescrn -c [SCREEN] [PATH TO NEW SCREEN]"
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echo "[SCREEN] options: batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended"
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;;
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esac
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;;
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"")
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echo "Usage: changescrn -c [SCREEN] [PATH TO NEW SCREEN]"
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echo "[SCREEN] options: batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended"
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;;
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esac
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;;
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b) #Creates a backup of original screens
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mkdir -p $BACKUP
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cp $SOURCE/*.png $BACKUP/
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echo "Backup complete"
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c)
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if [[ -z "$OPTARG" ]];then
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echo "Screen missing" >&2
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usage
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exit 1
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elif ! valid "$OPTARG";then
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echo "Unknown screen: $OPTARG" >&2
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usage
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exit 1
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fi
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c="$OPTARG"
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;;
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b) b=1 ;;
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\?)
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echo "Invalid option: -$OPTARG, 'changescrn -h' for usage" >&2
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echo "Invalid option: -$OPTARG" >&2
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usage
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exit 1
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;;
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*)
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echo "'changescrn -h' for useage"
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echo "Unknown option: -$opt" >&2
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usage
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exit 1
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;;
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"")
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echo "Requires argument. 'changescrn -h' for usage" >&2
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echo "Requires argument." >&2
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usage
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exit 1
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;;
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h)
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echo "Change Screen: changescrn -c [SCREEN] [PATH TO NEW SCREEN]"
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echo "Backup existing screens: changescrn -b"
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echo "Restore original screens: changescrn -r [SCREEN] (use option 'all' to restore all screens at once)"
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echo "[SCREEN] options: batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended"
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exit 1
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usage
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exit
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;;
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esac
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done
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shift $(( OPTIND - 1 ))
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if [ $b -eq 1 ] && [[ ! -z "${r}" ]];then
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echo "You cannot specify -b and -r at the same time." >&2
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usage
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exit 1
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fi
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if [ $b -eq 1 ] && [[ ! -z "${c}" ]];then
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echo "You cannot specify -b and -c at the same time." >&2
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usage
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exit 1
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fi
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if [[ ! -z "${r}" ]] && [[ ! -z "${c}" ]];then
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echo "You cannot specify -r and -c at the same time." >&2
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usage
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exit 1
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fi
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if [ $b -eq 1 ];then
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if [ "$#" -ne 0 ];then
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echo "Unknown extra argument." >&2
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usage
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exit 1
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fi
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mkdir -p "$BACKUP"
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cp "$SOURCE"/{batteryempty,lowbattery,overheating,poweroff,rebooting,recovery,splash,starting,suspended}.png "$BACKUP"/
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echo "Backup complete"
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elif [[ ! -z "${c}" ]];then
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if [ "$#" -eq 0 ];then
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echo "Path to image missing." >&2
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usage
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exit 1
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elif [ "$#" -gt 1 ];then
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echo "Unknown extra argument." >&2
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usage
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exit 1
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elif [ ! -f "$1" ];then
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echo "File missing: $1" >&2
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exit 1
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fi
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cp "$1" "$SOURCE"/"$c".png
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echo "$c screen replaced"
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elif [[ ! -z "${r}" ]];then
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if [[ "$r" == "all" ]];then
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echo "Restoring all screens..."
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cp "$BACKUP"/{batteryempty,lowbattery,overheating,poweroff,rebooting,recovery,splash,starting,suspended}.png "$SOURCE"/
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elif [ ! -f "$BACKUP"/"$r".png ];then
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echo "Backup for $r doesn't exist." >&2
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exit 1
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else
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echo "restoring $r.png..."
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cp "$BACKUP"/"$r".png "$SOURCE"/
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fi
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echo "Done!"
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else
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echo "No options specified" >&2
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usage
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exit 1
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fi
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}
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done
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main "$@"
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