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#!/bin/bash
if [ -z "$1" -o ! -d "$1" ]; then
echo "Usage: $0 <top-directory> [<days ago>]" 1>&2
exit 1
fi
top="${1}"
shift
source "${top}/etc/settings.sh"
img="http://www.phdcomics.com/comics/archive/phd$(date -d "$daysago days ago" +%m%d%y)s.gif"
browser="Mozilla/5.0 (Windows NT 10.0; WOW64; rv:46.0) Gecko/20100101 Firefox/46.0"
echo "Versuche, $img zu laden"
wget -O "${image_dir}/$day.gif" --user-agent="$browser" "$img"
if [ -s "${image_dir}/$day.gif" ]; then
rm -f "${comic_dir}/latest.gif"
ln -s "${image_offset}/$day.gif" "${comic_dir}/latest.gif"
else
rm -f "${image_dir}/$day.gif"
fi
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