check_debianoffspring_updates.sh

#!/bin/bash

script="check_debianoffspring_updates.sh"
version="1.0.0"
author="John Gonzalez"

while getopts ":v" opt; do
  case $opt in
    v)
      echo "$script - $author - $version"
      exit 0
      ;;
    \?)
      echo "Invalid option: -$OPTARG" >&2
      exit 1
      ;;
  esac
done

# Check the operating system
if [ -f "/etc/debian_version" ]; then
  # Debian logic
  # Check for updates
  updates=$(apt list --upgradable 2>/dev/null | grep -c /)

  # Check for security, stable, and recommended updates
  security=$(apt list --upgradable 2>/dev/null | grep -c /.*security)
  stable=$(apt list --upgradable 2>/dev/null | grep -c /.*stable)

  # Check for kernel updates
  kernel=$(apt list --upgradable linux-image-* 2>/dev/null | grep -c linux-image)

  if [ $updates -eq 0 ]; then
    echo "No updates available."
    exit 0
  elif [ $security -gt 0 ] || [ $stable -gt 0 ] || [ $kernel -gt 0 ]; then
    echo "$updates Debian updates are available. $security are security updates, $stable are stable updates, $kernel are kernel updates."
    exit 2
  else
    echo "$updates Debian updates are available. $security are security updates, $stable are stable updates, $kernel are kernel updates."
    exit 1
  fi
elif [ -f "/etc/lsb-release" ]; then
  # Ubuntu logic
  # Check for updates
  updates=$(apt list --upgradable 2>/dev/null | grep -c /)

  # Check for security, stable, and recommended updates
  security=$(apt list --upgradable 2>/dev/null | grep -cE '/.*security|/.*ubuntu.*security')
  stable=$(apt list --upgradable 2>/dev/null | grep -cE '/.*stable|/.*ubuntu.*stable')

  # Check for kernel updates
  kernel=$(apt list --upgradable linux-image-* 2>/dev/null | grep -c linux-image)

  # Check if any packages are in phased update
  phased_updates=0
  for package in $(apt list --upgradable 2>/dev/null | awk -F/ '{print $1}'); do
    policy_output=$(apt-cache policy "$package")
    if echo "$policy_output" | grep -q "phased"; then
      phased_updates=$((phased_updates + 1))
    fi
  done

  if [ $updates -eq 0 ]; then
    echo "No updates available."
    exit 0
  elif [ $phased_updates -eq $updates ]; then
    echo "$updates Ubuntu updates are available. All updates are in phased update."
    exit 0
  elif [ $security -gt 0 ] || [ $stable -gt 0 ] || [ $kernel -gt 0 ] || [ $phased_updates -gt 0 ]; then
    echo "$updates Ubuntu updates are available. $security are security updates, $stable are stable updates, $kernel are kernel updates. $phased_updates updates are in phased updates."
    exit 2
  else
    echo "$updates Ubuntu updates are available. $security are security updates, $stable are stable updates, $kernel are kernel updates. $phased_updates updates are in phased updates."
    exit 1
  fi
else
  echo "Unsupported operating system"
  exit 1
fi