Check Daylight Savings

dst.sh

#!/bin/bash

PST_TIME=$(env TZ=America/Los_Angeles date +"%-H")
UTC_TIME=$(env TZ=UTC date +"%-H")

DST_CHECK=$(($PST_TIME + 8 - $UTC_TIME))


echo "PST Hour:" $PST_TIME
echo "UTC Hour:" $UTC_TIME
echo "DST CHECK:" $DST_CHECK

if [ "$DST_CHECK" -eq "1" ];then
  echo "DST +1 active"
else
  echo "DST +1 inactive"
  echo "We should actually start this an hour later. Going to sleep for 1 hour..."
  sleep 3600
fi