Reading Data Stored in RAM

 Reading Data On RAM 

Exploring Ram in RHEL8.4

First, open the terminal in RHEL and type python3 to get started.

Then create a var x = 5.

Then open another terminal and type

    ps -aux | grep python3

From the above, we will see the PID or Process ID of python ( The first one )

    ID = 4414

Now go to proc folder, using the following: 

    cd /proc/

Here use the ls command to see various folders available

then move the folder of python using PID as 

    cd /4414/

again use ls to see all available files and folders.

Now run "cat maps" command to find the RAM address of heap.

use xxd command to create hex dump of a given file or standard input. It can also convert a hex dump back to its original binary form. 

use the command: cat maps | grep heap

Then, use sudo xxd -s 0x<id before hypen> -l $(( 0x<after hypen> - 0x <before hypen >)) mem | less

Now we will just scroll to see the data 

we have successfully searched data in RAM. 

 

DSA - Master Class

 It was a great session organized by Linux World.

Thank you Preeti Ma'am and Vimal Sir for organizing this session, it helped in clearance of many myths and doubts.

Learned lots and lots of new concepts.

- space complexity and time complexity helps in determining the amount of space and time required 

- it can also help in optimization of app 

- Richard bellman 

- some important modules to get important information about the code, like timeit, line profiler

- multi stage division process is the process of dividing a bigger problem it subproblems.

- overlapping it means in a subproblem If same subproblem is solved again and again.

- dynamic programming we divide the problem into smaller problems abd them combine the solutions to get thr final solution.

- backward induction Is reasoning backward in time from the end of a problem to determine a sequence of optimal operations.

- Dynamic programming is an approach

- Recursion and Memorization is used to achieve it.

- it takes more memory because of memorization

- bottom-up approach takes more time

- choosing between top-down and bottom-up is dependent on the given problem

- dp resolves the problem of overlapping but Divide and conquer don't 

- dynamic programming provides optimal solution.

JavaScript Masterclass

First of all Thank you Linux World for having a great Masterclass like this and that too for free.

Thank you Vimal Sir and Preeti Ma'am.

I learned a lots of things from this masterclass, even though I am working with JavaScript for long time, but I got to know may new things.

From JavaScript we can give life to webpages, we can make them interactive and user friendly.

Html, js and CSS all these three together make web page good and user friendly

JS can add interactivity, dynamics to page 

CSS can add a good design and give look and feel of page 

Html is the main structure of page i.e it's the skeleton of web page.

With Js we can modify or change any element, it's style, it's attributes on the fly.

With location in js we can make to some other webpage without using anchor tags

We can make js code speak by using Speaking API for free.

With JavaScript as front end and python as backend we can have ML models, being controlled from web page, we can also make a terminal for web based portal and control Linux or docker or any other thing like that.

Using Ajax is important, I remember when I was to use Ajax for first time it took me about 10 hrs to understand it's basics, but sir just took 20 mins to give the whole and sole concept of Ajax and that too with practical included, I love the way sir explains things.

JSON is used for arranging the data in organized way, it helps in transferring data from server to frontend. 

In these 2 days, that too in 8 hrs I learned a lots and lots of things, many of my concepts got more clearer and better.

Thank you Sir for conducting such a great session.

Industry use cases for kuberentes and open shift

Yesterday, we had a great session taken by Industry experts and organized by Linux World.

First off I would like to thank Linux world for conducting such a knowledgeable and great session.

In this session, I have gained a lot of information on, why kuberentes are used, how they are helpful to industry needs.

Container technology, which is capable of launching a complete OS in just 5-6 sec that to with very limited ram. 

I learned various use cases of container technology.

Docker is one of the technology that helps us create contains and work on it.

We can use docker in VM. Docker is very light weight and easy to install.

While docker is very useful and easy integrated with other technology, it has some drawbacks like it need admin rights so to overcome all these Podman is used.

Then I learned about openshift, why it's useful.

About S2I.

Then we had demo session.

I learned a lots of things.

Thank you Linux World for conducting this session.

#RedHat #vimaldaga #righteducation #educationredefine #rightmentor #linuxworld #makingindiafutureready #righeducation #arthbylw #containersbylw #kubernetes #openshift #expertsession #amel #daleep