Get the total number of seconds that the ec2-user has been idle - useful for shutting down instances

get_idletime

#!/bin/bash

RAW_TIME=$(w -hs ec2-user | awk '{print $4}')

SECONDS=0
MINUTES=0
TOTAL_SECONDS=0
DAYS=0

if [[ $RAW_TIME = *"days"* ]]; then
  DAYS=$(echo $RAW_TIME | sed -e 's/days//g')
  TOTAL_SECONDS=$(($DAYS * 86400))
elif [[ $RAW_TIME = *"s"* ]]; then
  SECONDS=$(echo $RAW_TIME | sed -e 's/s//g')
  TOTAL_SECONDS=$SECONDS
elif [[ $RAW_TIME = *"m"* ]]; then
  TEMP_MINS=$(echo $RAW_TIME | sed -e 's/m//g')
  MINUTES=$(echo $TEMP_MINS | cut -d ':' -f 1)
  SECONDS=$(echo $TEMP_MINS | cut -d ':' -f 2)
  TEMP_SECONDS=$(($MINUTES * 60))
  TOTAL_SECONDS=$(($TEMP_SECONDS + $SECONDS))
fi

echo "Seconds: $SECONDS"
echo "Minutes: $MINUTES"
echo "Days: $DAYS"
echo "Total Seconds: $TOTAL_SECONDS"