removehost() { hostname="$1" if grep -qP "[[:space:]]$hostname" /etc/hosts; then echo "$hostname found in /etc/hosts. Removing now..." sudo sed -ie "/[[:space:]]$hostname/d" /etc/hosts || echo "cannot remove host from /etc/hosts" >&2 else echo "$hostname was not found in /etc/hosts" >&2 fi } addhost() { hostname="$1" if grep -qP "[[:space:]]$hostname" /etc/hosts; then echo "$hostname already exists: $(grep "$hostname" /etc/hosts)" >&2 else echo "Adding $hostname to /etc/hosts..." printf "%s\t%s\n" "127.0.0.1" "$hostname" | sudo tee -a /etc/hosts > /dev/null || echo "cannot add host to /etc/hosts" >&2 if grep -q "$hostname" /etc/hosts; then echo "$hostname was added succesfully:" grep "$hostname" /etc/hosts else echo "Failed to add $hostname" >&2 fi fi }