Grub Default Kernel Updater (Improved)

This Python script simplifies the process of updating the default kernel boot option in your GRUB configuration file.

Requirements

• Python 3.9 or later (check with python3 --version)

Important Note:

Running this script requires root privileges, as it modifies system configuration files. Exercise caution and consider creating a system backup before proceeding.

Usage

1. Install Required Packages:

   Ensure you have the necessary Python modules (re and subprocess) installed. If not, use your system's package manager (e.g., apt-get install python3-re python3-subprocess for Debian/Ubuntu).

2. Download the Script:

   Download the script (e.g., grub_config_updater.py) and save it to a suitable location.

3. Run the Script (with Caution):

   Open a terminal, navigate to the directory where you saved the script, and execute it with elevated privileges using sudo:

   sudo python3 grub_config_updater.py

Warning: Running the script with sudo grants it root access. Double-check that you're using the correct script before proceeding.

Features

• Enhanced Error Handling: The script now gracefully handles potential errors, such as missing configuration files or invalid kernel version formats.
• Configurable Default Kernel Selection: (Optional) You can modify the script's logic to select a specific kernel version as the default, providing more customization (see "Future Improvements").
• Support for Different GRUB File Paths: (Optional) The script can be extended to accommodate various GRUB configuration file locations (see "Future Improvements").

Limitations

Specific GRUB Format Assumption: The script currently assumes a particular format for GRUB configuration files (lines starting with kernel /boot/vmlinuz-). This might need adjustments depending on your system's setup. Future Improvements

User Input for Default Kernel Version:

Allow users to specify the desired default kernel version via command-line arguments. Support for Varying GRUB Paths: Enable configuration of the GRUB configuration file path based on user or system settings. GRUB Version Detection: Potentially detect the GRUB version and adapt accordingly (advanced).