Bash script for search web recovery

For Developers
1

I made a script to change ip to 192.168.x.2, then curl 192.168.x.1, x is 0 to 10 with iteration. Just change the for to any you want if you want more. It will curl on 192.168.x.1 addresses to find a web recovery. From 192.168.0.1, to 192.168.10.1 it will curl those addresses. If there is a web recovery you will see any other message then failed.

#!/bin/bash

# Get the name of your Ethernet interface (assuming it's enp3s0, change if needed)
interface="enp3s0"

# Iterate over IP addresses and gateways
for i in {0..10}; do
    new_ip="192.168.$i.2"
    new_gateway="192.168.$i.1"
    netmask="255.255.255.0"

    # Change the IP address, netmask, and gateway
    sudo ifconfig $interface $new_ip netmask $netmask
    sudo route add default gw $new_gateway $interface

    # Create a temporary file
    temp_file=$(mktemp)

    # Test the connection to the gateway and save the output to the temporary file
    echo -e "\nTesting connection to the gateway..."
    curl_output=$(curl $new_gateway 2>&1)
    echo "$curl_output" > $temp_file

    # Check if the temporary file contains the specific error message
    if grep -q "Failed to connect" $temp_file; then
        echo "Warning: Failed to connect to the gateway ($new_gateway). Please check your network settings."
    else
        echo "Connection to the gateway ($new_gateway) successful. Received response:"
        cat $temp_file
    fi

    # Remove the temporary file
    rm -f $temp_file

    # Sleep for a moment before the next iteration
    sleep 1
done

Another script like this, but instead we curl to 192.168.1.0 to 192.168.1.255, for stupid TP-LINK routers that have web servers at like 192.168.1.66:

#!/bin/bash

# Set the fixed IP address
new_ip="192.168.1.2"
new_netmask="255.255.255.0"
new_gateway="192.168.1.1"

# Get the name of your Ethernet interface (assuming it's enp3s0, change if needed)
interface="enp3s0"

# Display current network settings
echo "Current network settings for $interface:"
sudo ifconfig $interface

# Change the IP address, netmask, and gateway
sudo ifconfig $interface $new_ip netmask $new_netmask
sudo route add default gw $new_gateway $interface

# Display new network settings
echo -e "\nNew network settings for $interface:"
sudo ifconfig $interface

# Loop through each IP address in the range and curl to it
for ((i=0; i<=255; i++)); do
    target_ip="192.168.1.$i"

    # Create a temporary file
    temp_file=$(mktemp)

    # Test the connection to the target IP and save the output to the temporary file
    echo -e "\nTesting connection to $target_ip..."
    curl_output=$(curl $target_ip 2>&1)
    echo "$curl_output" > $temp_file

    # Check if the temporary file contains the specific error message
    if grep -q "Failed to connect" $temp_file; then
        echo "Warning: Failed to connect to $target_ip. Please check your network settings."
    else
        echo "Connection to $target_ip successful. Received response:"
        cat $temp_file
    fi

    # Remove the temporary file
    rm -f $temp_file
done