Echo output of hostname to /etc/hosts

I am trying to create a dev host file like below -

$hostname $ramratan-pc $sudo echo "127.0.0.1 ramratan-pc" >> /etc/hosts 

How I can put output of hostname in echo string?

PS

I do not want to create bash script.

1 Answer

Simply do:

echo "127.0.0.1 $HOSTNAME" | sudo tee -a /etc/hosts