Linux - File test operator

Now till now the operators which we have used were running into the single program or a single file

Now here I'm going to show you how we can run and test a particular file operator, which we have already discussed

But let us see which are the file operators we have and how we can test a particular file and what are the clauses we can set for testing a particular file

So I can check with a query area like if I want to check a particular file is a file or a particular directory

a particular directory. Now for example I have a name or I don't know whether it is a file or a

directory. I can use hyphen d and then the file name so it will show me whether it is a file

or a directory. If hyphen d is true means it is a directory. If it is false it means it is not a

directory it is a file. Next we have that is hyphen f and file. We can check whether the file

is an ordinary file or a special file. The ordinary file means we generally keep the data into it

The created by the user, they are the ordinary files, though they are not a special file or a different kind of file we use into the Linux operating system

So we can check the kind of a file we have. If hyphen f is true, that means it is an ordinary file

If not, means it is a special kind of file we have, like your tar files, which is a backup file

or a particular, we can say a shell file, we can go for any files, right

Next we have hyphen g. Now we have seen how we can use the sticky bit and geo-id bits

Now if I want to check whether my file is assigned with a G-O-ID permission or not

So if I want to check it, I can give hyphen G-M the file name

It will check for my G permission is allocated or assigned on my file or not If it is true it is a sign If it is false it is not assigned Let us check how we can use this particular operator into our Linux shell

Same here we can use one of the relational operator into the file, same into the same file I have just modified the same

Same I'm going to ask for the first number feed it into red, a variable, second number, fit it into the B variable

But here I'm going to use equal to sign which you. symbolize that it is going to check for the equality of both the operants or we can say

both the variables data or values if both are same it will give you value are equal

if they are not equal if you know the condition is false it will give you it is not equal

let us check about it as such if dot sh so first value is two second values again two

it is showing me values are equal. Again, if I run the same, first value is three, second value is two, it is showing you

this are not equal. This is completely checked by or checked by your same file and the same operator which we have used

This is your string operators which we use. So this is how generally we can check for any of your operators

You can use any of the operators in condition or any conditions where you define

So different, like your different operators, you can also use this operators

It will accept your value for this. You do not have to define anything else

So this is how we have seen these string operators. So next we are going to check for the file test operators

We'll check for the files into, you know, directory whether it is a file or a particular folder that we can check by using some shell command

So let us check how to do it