-#!/bin/bash
+#!/bin/sh
apt-get update
-IP_ADDR=`ip address |grep ens|grep inet|awk '{print $2}'| awk -F / '{print $1}'`
-HOSTNAME=`hostname`
+IP_ADDR=$(ip address |grep ens|grep inet|awk '{print $2}'| awk -F / '{print $1}')
+HOST_NAME=$(hostname)
-echo "$IP_ADDR $HOSTNAME" >> /etc/hosts
+echo "$IP_ADDR $HOST_NAME" >> /etc/hosts
sudo apt-get install make -y