How to on basic bash shell scripting?

giraffelife

Here are some basics on bash shell scripting (shell programming)

Create a script using an editor like nano or vi in your home directory

Note: Nano is more beginner friendly, best to use nano editor if you are new to unix/linux editors.

$ vi myscript

Add these two lines to the top of the file and save the file

tropicalfruit=pineapple
echo My fruit is $tropicalfruit

Change the permission on the file so it has execute permissions

$ chmod 754 myscript 
$ ls -l
total 4
-rwxr-xr-- 1 trainer trainer 56 Jan 17 07:00 myscript

Run the script, the dot, slash mean run from current directory

$ ./myscript 
My fruit is pineapple

That's it you've written your first script, what goes into the script the real power, the logic, programming.