#!/bin/bash

# Get the uptime start time
UPTIME_OUTPUT=$(uptime -s)
UPTIME_EXIT_CODE=$?

# Check if the uptime command was successful
if [ $UPTIME_EXIT_CODE -ne 0 ]; then
  echo "UNKNOWN - Unable to get uptime"
  exit -1
fi

# Calculate the uptime in seconds
UPTIME_START=$(date -u -d "$UPTIME_OUTPUT" +%s)
CURRENT_TIME=$(date -u +%s)
UPTIME_SECONDS=$((CURRENT_TIME - UPTIME_START))

# Convert the uptime seconds to hours
UPTIME_HOURS=$(echo "scale=2; $UPTIME_SECONDS / 3600" | bc)

# Convert the uptime seconds to days
UPTIME_DAYS=$(echo "scale=2; $UPTIME_SECONDS / 86400" | bc)

# Print the result and performance data
echo "OK - Uptime: $UPTIME_DAYS days | uptime_hours=$UPTIME_HOURS"
exit 0