Linux - Shell decision making

Now here I'm going to talk about the decision making

Now many times in our programs it happens like we can get an unexpected value

It can be yes or it can be no or I can say it can be true or it can be false

So based on this particular decision we need to go for an output

Now a common example I can say I just want you to go for a market

Now if suppose I am calling my friend to come along with me

If my friend is coming I'll go along with her. If she's not coming I'll go along with her

not coming I'll go alone so this is a decision making so the same way it might happen

into your programs as well like it might you might get a true value or it might get a false

value so according to the value or according to the result or output which you are going to get

you need to proceed ahead so accordingly we have to take the decision so that's the decision

we are going to make into our programs as well now here we can see how we can use this

decision making as I said we have to go for a correct path

according to the output we generally got. So any way as for the program

you need to make the decision as the rule or as the requirement you have

Now whenever I'm going for a decision making, I have two type of statement which we can use for the decision

Called us if else statement. Like I have taken example if my friend is coming I go along with her If not means it will come to else if not I go alone so it becomes an if else condition if she coming I go

with her else I'll go alone so this is called as a if else statement so we can use

if a statement or if you have multiple conditions so you can go for case is sex

statement which is just like you can say case statement which we use into this

so you have multiple case statement which we use into this so you have multiple case is you can go for an option

Like for example I can take if I want to install an operating system

I need to select which operating system I do want to install into my laptop

So I have multiple options. Press A for Windows. Press B for Linux operating system

Press C for Mac operating systems. So these are the options we have

So this kind of multiple values if you have, if you have multiple set of variables or set of conditions

you can go for creating a case. this statement because sometimes it might happen like you know if you're using if else condition

it will be a huge command or huge program you need to make for you know fulfilling the condition

or for checking for the complete codes so in spite of that you can create the cases what we

generally do into these statements so let us check how we generally use this particular statement

and what are the difference do we have so into next video i'm going to explore more about the

if else statements