# Preseed file for Kali Linux installation
# Set the locale to en_US.UTF-8
d-i debian-installer/locale string en_US.UTF-8
# Set the country to US
d-i debian-installer/country string us
# Select the interface for network configuration
d-i netcfg/choose_interface select eth0
# Set the hostname for the installation
d-i netcfg/get_hostname string mykalihost
# Set the static IP address for the installation
d-i netcfg/static/ipaddress string 192.168.1.100
# Set the netmask for the static IP address
d-i netcfg/static/netmask string 255.255.255.0
# Set the gateway for the static IP address
d-i netcfg/static/gateway string 192.168.1.1
# Set the nameservers for the installation
d-i netcfg/static/nameservers string 8.8.8.8 8.8.4.4

#!/bin/bash

# Set variables for input and output files
input_folder="/path/to/templates" # Set the path to the folder containing template files
output_file="/path/to/preseed.txt" # Set the path to the output file


if [ $# -lt 2 ]; then # Check if the number of arguments is less than 2
    echo "Usage: ./preseeder.sh /path/to/template_files /path/to/output_file" # Print usage instructions
    exit 1 # Exit the script with an error code
fi

# Loop through each template file and extract data using sed command
for file in "$input_folder"/*; do # Loop through each file in the input folder
    if [ -f "$file" ]; then # Check if the file is a regular file
        # Extract data from template file using sed command
        echo "Extracting data from $file..." # Print a message indicating the file being processed
        data=$(sed 's/^# //' "$file") # Use sed command to remove comments from the beginning of each line
        # Remove any blank lines or comments at the beginning of each line
        data=$(echo "$data" | grep -vE '^\s*$|^[[:space:]]*#[[:space:]]*') # Use grep command to remove blank lines and comments
        # Split data into an array using newline as delimiter
        IFS=$'\n' read -ra lines < "$data" # Use IFS to split the data into an array using newline as delimiter
        
        # Loop through each line and write it to output file with correct format
        for line in "${lines[@]}"; do # Loop through each line in the array
            if [ ! -z "$line" ]; then # Check if the line is not empty
                echo "d-i debian-installer/$1 \"$line\""  "$output_file" # Print the line in the correct format to the output file
                # Replace placeholders (e.g., $1) with actual values using sed command
                sed -i "s/\$$1\"/$(echo "$line" | sed 's/\$1/"'"${2}"'"\")/g" "$output_file" # Use sed command to replace placeholders with actual values
            fi
        done
    fi
done

# Print success message and exit script
echo "Preseed file created successfully!" # Print a success message

#!/bin/bash

# This is a bash script that takes two arguments, a path to a template directory and a path to an output file.

# The first argument is the path to the template directory, where the script will look for template files to use.

# The second argument is the path to the output file, where the script will save the results.

# The script is executed with the following command, where the first argument is the path to the template directory and the second argument is the path to the output file:
# ./preseeder.sh /path/to/templates /path/to/output_file


if [ $# -ne 2 ]; then
    # If the number of arguments is not equal to 2, an error message is displayed and the script exits.
    echo "Error: Incorrect number of arguments provided."
    exit 1
fi

# The script then checks if the first argument, the path to the template directory, is a valid directory.
if [ ! -d "$1" ]; then
    # If the first argument is not a valid directory, an error message is displayed and the script exits.
    echo "Error: The first argument must be a valid directory."
    exit 1
fi

# The script then checks if the second argument, the path to the output file, is a valid file.
if [ -f "$2" ]; then
    # If the second argument is a valid file, the user is prompted to confirm if they want to overwrite the file.
    read -p "The output file already exists. Do you want to overwrite it? (y/n) " response
    # If the user responds with "y" or "Y", the script continues. Otherwise, the script exits.
    if [ "$response" != "y" ] && [ "$response" != "Y" ]; then
        exit 1
    fi
fi

# The script then creates the output file using the second argument provided.
touch "$2"

# The script then loops through all the files in the template directory.
for file in "$1"/*; do
    # The script checks if the file is a regular file.
    if [ -f "$file" ]; then
        # If the file is a regular file, the contents of the file are appended to the output file.
        cat "$file" >> "$2"
    fi
done

# The script then displays a success message and exits.
echo "Success: Output file created with contents from template directory."
exit 0