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→INVESTIGATION 2: USING VARIABLES IN SHELL SCRIPTS
# Run the '''hello.bash''' by just shell script name (i.e. to not use ./ prior to shell script name).<br><br>The shell script should run just by name.<br><br>
# Exit your Matrix session, and log back into your Matrix session.<br><br>
# Re-run the '''hello.bash''' shell script by just using the name.<br><br>What did you notice?<br><br>The setting of the '''PATH''' environment variable only worked in the current session only. If you exit the current Matrix session, then the recently changed settings for environment variables will be lost. <br>You will learned in Week 12 how to set environment variables in startup files.<br><br>
# Use a text editor to create a file called '''user-variables.bash'''<br><br>
# Add the following lines to the bottom of the file:<br><span style="font-family:courier;">#!/bin/bash<br>age=25<br>readonly age<br>read -p "Enter your Full Name" name<br>read -p "Enter your age (in years): " age<br>echo "Hello $name - You are $age years old"</span><br><br>
