The purpose of this hands-on training is to teach you how to script in shell.
Learning Outcomes
At the end of this hands-on training, you will be able to;
explain shell scripting basics.
explain shell variables.
do simple arithmetic.
Outline
Part 1 — Shell Scripting Basics
Part 2 — Shell Variables
Part 3 — Simple Arithmetic
Part 1 — Shell Scripting Basics
Create a folder and name it shell-scripting.
mkdir shell-scripting && cd shell-scripting
Create a script file named basic.sh. Note all the scripts would have the .sh extension.
#!/bin/bash echo "Hello World"
Before we add anything else to our script, we need to alert the system that a shell script is being started. This is done specifying #!/bin/bash on the first line, meaning that the script should als be run with bash, rather than another shell. #! is called a shebang because the # symbol is called a hash, and the ! symbol is called a bang.
After to save the above content, we need to make the script executable.
