Linux server APT pkg update cron shell script

maintenance.sh

#!/bin/bash

# Set variables
LOG_FILE="/root/SERVER_SUSTAINABILITY/maintenance.log"
HOSTNAME=$(hostname)

log() {
    echo "$(date +"%Y-%m-%d %H:%M:%S") $1" | touch -a "$LOG_FILE"
}

# Ensure the script is run as root
if [ "$EUID" -ne 0 ]; then
    log "ERROR: This script must be run as root!"
    exit 1
fi

log "----- Starting System Maintenance -----"

# Update package lists
log "Updating package lists..."
if apt update -y >>"$LOG_FILE" 2>&1; then
    log "Package lists updated successfully."
else
    log "ERROR: Failed to update package lists!"
    echo "System maintenance failed on $HOSTNAME. Check logs: $LOG_FILE"
    exit 1
fi

# Upgrade installed packages
log "Upgrading packages..."
if apt full-upgrade -y >>"$LOG_FILE" 2>&1; then
    log "Packages upgraded successfully."
else
    log "ERROR: Failed to upgrade packages!"
    echo "System maintenance failed on $HOSTNAME. Check logs: $LOG_FILE"
    exit 1
fi

# Remove unused dependencies
log "Removing unnecessary packages..."
if apt autoremove -y >>"$LOG_FILE" 2>&1; then
    log "Unused packages removed."
else
    log "ERROR: Failed to remove unnecessary packages!"
fi

# Clean up APT cache
log "Cleaning up APT cache..."
if apt clean >>"$LOG_FILE" 2>&1; then
    log "APT cache cleaned."
else
    log "ERROR: Failed to clean APT cache!"
fi

# Check if a reboot is needed
if [ -f /var/run/reboot-required ]; then
    log "Reboot required. Rebooting now..."
    echo "System maintenance completed on $HOSTNAME. Rebooting server."
    shutdown -r now
else
    log "No reboot required."
    echo "System maintenance completed on $HOSTNAME. No reboot needed."
fi

log "----- Maintenance Completed -----\n\n"
exit 0