13,420
edits
Changes
→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.<br>If you exit the current Matrix session, then the recently changed settings for environment variables will be lost.<br>You will in a future tutorial how to set environment variables in startup files.<br><br>Let's create a Bash shell script that contain '''user-created variables'''.<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>
