create iso image of ubuntu 20.04

README.md

Install Required Packages: Make sure you have the necessary packages installed:

sudo apt update
sudo apt install genisoimage

make_iso.sh

#!/bin/bash

# Create a temporary directory
mkdir ~/custom_iso
cd ~/custom_iso

# Copy necessary files
cp /etc/apt/sources.list .
cp /etc/fstab .
# ... copy other configuration files ...

# Create a list of installed packages
dpkg --get-selections > installed-software

# Install necessary packages on the custom_iso
sudo xargs -a installed-software apt-get install --reinstall -y

# Create the ISO
sudo mkisofs -o custom.iso -r -J .

system_image.sh

#!/bin/bash

# Set the output ISO file name
ISO_FILE="system_image.iso"

# Set the temporary directory
TMP_DIR="/tmp/system_image"

# Create the temporary directory
mkdir -p "$TMP_DIR"

# Create a list of installed packages
dpkg --get-selections > "$TMP_DIR/installed-packages.txt"

# Copy kernel information
uname -a > "$TMP_DIR/kernel_info.txt"

# Copy necessary configuration files (customize as needed)
cp -R /etc "$TMP_DIR/etc"

# Copy home directory (optional, comment if not needed)
cp -R /home "$TMP_DIR/home"

# Create the ISO image
genisoimage -o "$ISO_FILE" -r -J "$TMP_DIR"

# Clean up temporary directory
rm -r "$TMP_DIR"

echo "System image created successfully: $ISO_FILE"