clean_kernels.sh

#!/bin/bash
#author: salman sk

config_file="config.conf"
log_file="logs/cleanup.log"

# Check if script is run as root
if [ "$EUID" -ne 0 ]; then
  echo "Please run as root"
  exit 1
fi

log_dir=$(dirname "$log_file")
mkdir -p "$log_dir"

if [ ! -f "$config_file" ]; then
  echo "Config file not found. Exiting."
    ./i
  exit 1
fi

source "$config_file"

# Log the start of the script execution
echo "$(date) - Starting the cleanup of old Linux kernel images." >> "$log_file"

# Remove old Linux kernel images except the currently running one
current_kernel=$(uname -r)
yum list installed kernel | awk '{print $1}' | grep -v "$current_kernel" | xargs sudo yum remove -y

# For systems using dnf
# dnf list installed kernel | awk '{print $1}' | grep -v "$current_kernel" | xargs sudo dnf remove -y

# Update GRUB (GRUB2 for RHEL-based systems)
grub2-mkconfig -o /boot/grub2/grub.cfg

# Log the end of the script execution
echo "$(date) - Cleanup completed and GRUB updated." >> "$log_file"