Setting a Static IP Address in Linux

Example with Netplan (Ubuntu):

1. Identify the Current Network Interface

Run:

ip a

Note the name of your interface (e.g., eth0, ens33).

2. Edit the Network Configuration

Open the configuration file in a text editor (e.g., nano):

sudo vim /etc/netplan/01-netcfg.yaml

3. Configure the Static IP

Add or modify the configuration (replace with your own values):

network:
  version: 2
  ethernets:
    eth0:
      addresses:
        - 192.168.1.100/24
      gateway4: 192.168.1.1
      nameservers:
        addresses: [8.8.8.8, 8.8.4.4]

You can also use a bash script to set a static IP:
ip.sh

4. Apply the Changes

Apply the changes:

Run:

sudo netplan apply

5. Verify the Connection

Make sure the IP address has changed:

ip a

Check internet connectivity:

ping google.com

Notes:

• The configuration file path may vary depending on the distribution.
• For NetworkManager, use nmcli or the graphical interface.

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