paraszt-heartbeat

#!/bin/bash
URL="http://somedomain.com";
TRIES_FILE="tries.txt";
TRIES_CNT=`cat $TRIES_FILE`;
MAX_TRIES_CNT=3;

echo "Tries count: $TRIES_CNT"

CURL_OUT=`curl -s --head --connect-timeout 5 $URL | head -n 1`

if [ -z "$TRIES_CNT" ]
then
  TRIES_CNT=1;
fi

if [[ $CURL_OUT == *200* ]]
then
  echo "It's there! Be happy :)";
  echo "1" > $TRIES_FILE;
else
  echo "Something went wrong...";
  if [[ $TRIES_CNT -eq $MAX_TRIES_CNT ]]
  then
    printf "From: Me <server-whatever@email.com>\nTo: <monitor@email.com>\nSubject: SITE DOWN: $URL \n" | sendmail -i -t
  fi

  TRIES_CNT=$((TRIES_CNT+1));
  echo $TRIES_CNT > $TRIES_FILE;
fi