motd.sh

#!/bin/bash

### MOTD and Downtime history
# autor: kru0052
# 2016 IT4Innovations
###

printf "update"
wget -q  http://www.it4i.cz/support/?lang=en
printf " ... OK\n"

i="index.html?lang=en"

HEAD=$(grep -n -m1 'class="matrix light-grey' "$i" |cut -f1 -d: | tr --delete '\n')
END=$(grep -n -m1 '<h3>Other</h3>' "$i" |cut -f1 -d: | tr --delete '\n')
LAST=$(wc -l "$i" | cut -f1 -d' ')
DOWN=$((LAST-END+2))

sed '1,'"$((HEAD-1))"'d' "$i" | sed -n -e :a -e '1,'"$DOWN"'!{P;N;D;};N;ba' | sed '/<div/d' > "TMP.html"
rm "$i"

title="Message of the day"
head=$(cat TMP.html | grep "rss-item-title" | cut -d ">" -f 2 | cut -d "<" -f 1)
date=$(cat TMP.html | grep "<i>" | cut -d ">" -f 2 | cut -d "<" -f 1 | cut -d " " -f 1)
info=$(cat TMP.html | grep "<p>" | cut -d ">" -f 2 | cut -d "<" -f 1)
rm TMP.html

echo ""
echo "$title"
echo "$date - $head"
echo "$info"
echo ""

# poovolene stavy - Salomon Maintenance, Anselm Maintenance, Back in Production, Infrastructure Maintenance, PBS Maintenance, SCRATCH Maintenance, HOME Maintenance, Salomon and Anselm Maintenance
if [ "$head" = "Salomon Maintenance" ] || [ "$head" = "Anselm Maintenance" ] || [ "$head" = "Back in Production" ] || [ "$head" = "Infrastructure Maintenance" ] || [ "$head" = "PBS Maintenance" ] || [ "$head" = "SCRATCH Maintenance" ] || [ "$head" = "HOME Maintenance" ] || [ "$head" = "Salomon and Anselm Maintenance" ]; then
	dateDown=$(cat downtimes_history.md | sed -n '/---/{n;p;}' | cut -d "|" -f 2 | cut -d " " -f 1)
	headDown=$(cat downtimes_history.md | sed -n '/---/{n;p;}' | cut -d "|" -f 3 | cut -d "*" -f 3)	

	if [ "$date" = "$dateDown" ] && [ "$head" = "$headDown" ]; then
		echo "Everything up-to-date..."
	else
		echo "Updating Downtime History..."
		test=" |$date|**$head** $info|"
		sed '/---/a '"$test"'' downtimes_history.md > TMP.md
		cat TMP.md > downtimes_history.md
		rm TMP.md
	fi
	#echo "### $title" > MOTD.md
	#echo "**$head**" >> MOTD.md
	#echo "$date - $info" >> MOTD.md
else
	echo "Downtime History not updated..."
fi