Bash script for automated Ubuntu system maintenance. Handles package updates, full upgrades, dependency cleanup, and checks for required reboots.

ubuntu-system-update.sh

#!/bin/bash

# =================================================================
# DESCRIPTION: Automated Ubuntu/Debian System Maintenance
# AUTHOR: Afsal Rahim
# USAGE: sudo ./update.sh OR move to /usr/local/bin/
# =================================================================

# Define colors for better status visibility
GREEN='\033[0;32m'
BLUE='\033[0;34m'
NC='\033[0m' 

echo -e "${BLUE}--- Starting System Update ---${NC}"

# 1. Update package lists
echo -e "${GREEN}Updating package lists...${NC}"
sudo apt update

# 2. Upgrade packages and dependencies (Includes kernel updates)
echo -e "${GREEN}Performing full upgrade...${NC}"
sudo apt full-upgrade -y

# 3. Clean up obsolete packages and clear the cache
echo -e "${GREEN}Cleaning up...${NC}"
sudo apt autoremove -y
sudo apt autoclean

# 4. Check if reboot is needed (Required for Kernel/Libc updates)
if [ -f /var/run/reboot-required ]; then
    echo -e "${BLUE}***************************************${NC}"
    echo -e "${BLUE}* REBOOT REQUIRED: System needs restart *${NC}"
    echo -e "${BLUE}***************************************${NC}"
else
    echo -e "${GREEN}Update complete. No reboot required.${NC}"
fi