aurora.sh

#!/bin/bash

function usage()
{
    echo "Available parameters:"
    echo "---------------------"
    echo "-h --help"
    echo "-d|--date: Date used in aurora link, e.g. 20160315"
    echo "-c|--count: Amount of slides available, default is 10"
    echo "-o|-output: Name of output file. Default is output.pdf"
    echo ""
}

# read the options
TEMP=`getopt -o d:c:o:h --long date:,count:,output:,--help -n 'aurora.sh' -- "$@"`
eval set -- "$TEMP"

# extract options and their arguments into variables.
while true ; do
    case "$1" in
    	-h|--help)
			usage ; exit 1;;
        -d|--date)
            case "$2" in
                "") shift 2 ;;
                *) DATE=$2 ; DATE_PRESENT=1; shift 2 ;;
            esac ;;
        -c|--count)
            case "$2" in
                "") shift 2 ;;
                *) COUNT=$2 ; COUNT_PRESENT=1;shift 2 ;;
            esac ;;
        -o|--output)
            case "$2" in
                "") shift 2 ;;
                *) OUTPUT=$2 ; OUTPUT_PRESENT=1;shift 2 ;;
            esac ;;
        --) shift ; break ;;
        *) echo "Invalid arguments"; usage ; exit 1 ;;
    esac
done


if [[ $DATE_PRESENT -ne 1 ]]; then
    echo "Error: Mandatory parameter date missing"
    echo
    usage
    exit 1
fi
if [[ $COUNT_PRESENT -ne 1 ]]; then
    echo "Error: Mandatory parameter count missing"
    echo
    usage
    exit 1
fi
if [[ $OUTPUT_PRESENT -ne 1 ]]; then
    echo "Error: Mandatory parameter output missing"
    echo
    usage
    exit 1
fi


echo "Downloading images...."
for i in `seq 1 $COUNT`; do
	url="https://aurora.iguw.tuwien.ac.at/static/slides/hci/jpg/vo"$DATE"_"$i".jpg"
    content="$(curl -w "%{http_code}" "$url" -o "#$i.jpg" --insecure)"
done

echo "Converting to pdf..."
convert "*.jpg" "$OUTPUT"

echo "Removing image files..."
rm *.jpg

echo "Done, saved as $output.pdf"