DNS switching script for Ubuntu server

DNS Switcher.md

Just set your configuration path. Examples :

• /etc/netplan/50-cloud-init.yaml
• /etc/resolv.conf

script.sh

#!/bin/sh

file=/etc/netplan/50-cloud-init.yaml

begzar_1=185.55.226.2
begzar_2=185.55.225.25
shecan_1=178.22.122.100
shecan_2=185.51.200.2

complete() {
    echo 'Apply cahnges'
    netplan apply
    echo 'Done'
}

begzar() {
    sed -i -e "s/${shecan_1}/${begzar_1}/g" $file
    sed -i -e "s/${shecan_2}/${begzar_2}/g" $file
    complete
}

shecan() {
    sed -i -e "s/${begzar_1}/${shecan_1}/g" $file
    sed -i -e "s/${begzar_2}/${shecan_2}/g" $file
    complete
}

if [ "$1" = "begzar" ]; then
    begzar
elif [ "$1" = "shecan" ]; then
    shecan
else
    echo 'Please select DNS provider'
fi