Show what is a show in this lesson, will cover about Shell, how the shell works and how you can run
command within the shelf or how it's set up in a shell.
So what exactly is a shell?
Shell is like a container, like, you know, you have like a Tupperware in your home or any kind of
containers that holds your environmental information inside of it.
It's interfaces between musicI and kernels or operating systems.
So you have built an operating system and then it is provided a platform you to execute commands again.
Windows is one of the platform and Windows operating system.
When you start up a GUI, you execute commands by running by double clicking on a program so that GUI
interface is your Shell and Linux.
When you don't have a GUI, you are given a terminal shell or like a man that is your shell.
To find your shell, you could run a command like echo dollars, dollar and zero that would tell you
what shell you are in.
And you could also get a listing of all your shells in your Linux distribution by running the command
cat at shells.
Your shell is also inside of ETSI password that is defined inside of the file.
You in Windows Guey is a shell in Linux katik, which is a shell and Linux each, which is Shell, Basche,
etc..
All these are the shell that is provided to a user gambo looking at this diagram again and we are second
from the top.
You'll see the application that talks to the shell and then Shell talks to Colonel and Colonel is the
one that is telling hardware what to do.
Let's look at our Linux machine and we'll see how we could find our shell will open up a terminal or
a quick.
And when you do cat, so when you do echo below zero, it tells you you are in Basche so you can look
at the available shell that is installed in your distribution by doing cat at sea.
Shells are going to tell you all the shells that are available.
And when you look at an ETSI password.
Cat ATSE password, and you'll see in my username, which is right here, it tells the Schill is all
the way at the end that I have a defined show which has been Basche.
I could change the show if I want to, to a different show, but I try to keep it consistent with other
users.
So that was the shell does and will cover the later and the later lessons.
How we could talk to Shell to create scripts and other things to automate our tasks.