IF TEST Bash Simple Program#!/bin/bash a=10b=11 if [ "$a" -eq "$b" ]then echo " a and b is equal"else echo " a and b is not equal"fi if [ "$a" -ne "$b" ]then echo " a and b is not equal"else echo " a and b is equal"fi if [ -n "$c" ]then echo "c is not null"else echo "c is not declared, is null"fi c="" if [ -z "$c" ]then echo "c is empty"else echo "c has text"fi c="test" if [ -z "$c" ]then echo "..