#!/bin/bash
# This is meant to be run by cron, just setup a cronjob to run this script every day or so
# This script checks if a file ($fileSwitch) is last modified > $dayLimit days ago & if so a script is run
# On your computer or laptop, setup a cronjob to run an ssh command to modify $fileSwitch every couple hours or so.

fileTrigger="$HOME/.deadtrigger"
fileLock="$HOME/.deadlock" # if this file exists, the deadmans switch will be disabled. This file is automatically created when the switch is pulled
scriptToRun="$HOME/deadman/imdead.sh"
dayLimit=14 # 14 day trigger

# if our file lock exists, we already ran OR the switch has been disabled on purpose
if [ -f "$fileLock" ]; then
    exit 0
fi

# time has to be in seconds so dayLimit (days) * 24 (hours in a day) * 60 (mins in an hour) * 60 (seconds in a min)
let "triggerTime=$dayLimit * 24 * 60 * 60"
let "lastPing=$(stat -c %Y $fileTrigger)"
let "currTime=$(date +%s)"
let "dTime=$currTime-$lastPing"
echo $dTime
if [ $dTime -gt $triggerTime ]
then 
    touch $fileLock
    bash $scriptToRun
fi