hostnamehelper.sh

#!/bin/bash
## helper script to more easily personalize cloned virtual-machines. add to your bashrc.
## on login, it will test the hostname and if localhost is determined to be a part of the hostname,
## this script will offer to fix that for you.

if [[ $(hostname -s) = localhost* ]]; then
    read -p "[!!!] it seems you are still using localhost, would you like to set the hostname? (y/n) " choice
    if [[ "${choice}" -eq "y" ]]; then
      read -p "  new hostname: " newhostname
      # set new hostname
      sudo hostnamectl set-hostname ${newhostname}
      # reload the shell (to fix the env and PS1 prompt)
      source ~/.bashrc
      myhost=`hostname`
      echo "[hostname] = ${myhost}"
      ## TODO: reach to adguard-api to add the IP and hostname to homelab-dns
    fi
fi