So this is going to be a short introduction to the.
So let me display the contents of that file.
Shadow, I figured it their.
So since I'm the road user.
I have the permissions.
I said to see Shardul.
I'm sorry, I did not like the cat comment.
So let's discuss the contents of the T-shirt so you can see the root user and there are some other services,
you can see the second Flagstar.
So if any system service, order service has the star, it means that we cannot login to the system
as the service or that the one process.
Right.
There is no login for these services.
And if you scroll down, you have that Nickey and the nickel.
So these are the two users on my Linux system.
So first, I'm going to explain this syntax, and it will be to be easy for you to understand.
First one is the user name and the second filter.
You have this Longland to some data and this is the end password for your Nekesa.
So this is the encrypted password.
And the third column is the number of deaths you have created this unique user from the January 1st,
1970.
So there is a time called Unix Epoch Time, and from that time it will be considered after this eighteen
thousand thirty deaths.
I have created this user, Nikkie.
So if I add eighteen thousand thirty four to the January 1st, 1970, and from those many days I have,
I will get a date on which I have created this user, Nickey.
So I have created this user today only so does the fourth column is Dero Geto means that we need to
wait for some more this to change the password again.
So if I change this password now today, if I have the value of it, I need to wait for five days to
change my password again.
Since I have zero, I can change it anytime.
So this 999 is maximum pasturage.
That means that after these many days I need to update my password.
So it's like life time and this seven means.
The number of days before I get notification that my passport is going to be excellent, so I have to
wait nine nine nine nine nine, so on the nine nine nine nine second day, I will get a notification
that your passport is going to be expired.
Please change.
So in the same way, the user contents are also sim nickel and then their password and the one eight
five three six.
So I helped create the Nikil and today I created this nickel user.
So it means that there is one day difference, that there is one different and Geto means the minimum
password.
It it means that I don't need to wait for anything.
I can just simply change the password at any time.
Nine nine nine nine is the maximum password explained.
So after these days, my password will expire and also I also get to work.
OK.
And the sun is up before the founders of this password, I get a notification that I need to know password.
So after these immigrants, we have know that that means the expiration date and post expiration and
so on.
Since we our password does not get did not expect, we have done all things.
So that's what you need to know what the issues are.
And one more what you need to know about this fight is if you have the right permissions, you can dump
this hash and you can try to crack with the tools like Don Draper or Craxton or any other tools.
So we know when you put the password for your Linux system, it will be very faster to crack this hashes
and you get the plain text format.
That's why you need to check that it gets to the original user had access to a tee shot of it or not.
If they have access, they can just dump this file and try to catch the password.
That's why the one security mechanism you need to implement is use the strongest passwords as possible.