Check server (Amazon EC2) meminfo

aws-ec2-meminfo.sh

#!/bin/bash

# Created by NamNV609

read -p "Please enter host username (ec2-user): " ipUsername
read -p "Please enter host IP address: " ipAddr

ipUsername=${ipUsername:-"ec2-user"}

echo "Execute command: ssh $ipUsername@$ipAddr cat /proc/meminfo | awk 'NR < 3 {print}'"
echo "Meminfo of $ipAddr:"

meminfo=$(ssh "$ipUsername"@"$ipAddr" cat /proc/meminfo | awk 'NR < 3 {print}')
memTotal=$(echo -e "$meminfo" | awk 'NR==1{print $2}')
memFree=$(echo -e "$meminfo" | awk 'NR==2{print $2}')

echo -e "$meminfo\n------------------------------\nMemTotalInMB:\t $(($memTotal / 1024))\tMB\nMemFreeInMB:\t $(($memFree / 1024))\tMB"