txtyash

Backend development pre-requisites

Introduction

This is a gist for backend development for web platforms. Let's take a website for example Google https://google.com. When we visit Google in our browser, we see their landing page with their logo and an input box where we can search whatever we want. The things we see on our screen is the user interface or the frontend. Now when we enter anything in the input box and hit enter, how do we get search results? That's where the backend comes in, it understands our requests and gives us results. That's exactly like communication between two people.

Networking

Although networking is a big topic and hard to understand, we only need to understand one thing to get started: IP addresses. If I had to visit a friend, I would need their address, similarly all electronic devices connected to the Internet have a unique IP address. There are enough IP addresses for all of us. Let's say the IP address 2001:0db8:85a3:0000:0000:8a2e:0370:7334 belongs to a computer

txtyash

{
  lib,
  config,
  ...
}: {
  imports = [./options.nix ./yash];

  config.profiles.yash.editor = "nvim";

  # Generate this: users.users.yash.description = "Yash Shinde";

txtyash

{
  imports = [ ./users.nix ];

  x.users.alice.editor = "hx";
  x.users.bob.editor = "vi";
  x.users.clive.editor = "code";

  boot.loader.grub.enable = false;
  fileSystems."/" = { device = "/dev/sda1"; };
}

txtyash

g  :https://www.google.com/search?q=%s                  Google
b  :https://bing.com/search?q=%s                        Brave
d  :https://duckduckgo.com/?q=%s                        DuckDuckGo
y  :https://youtube.com/search?q=%s                     Youtube
m  :https://www.merriam-webster.com/dictionary/%s       Merriam

a  :https://www.amazon.com/s/?field-keywords=%s         Amazon India
f  :https://www.flipkart.com/search?q=%s                Flipkart
my :https://myntra.com/%s                               Myntra

txtyash

default arch.conf
timeout 0
console-mode max
editor no

txtyash

[Unit]
Description=Lock X session using slock for user %i
Before=sleep.target

[Service]
User=zim
Environment=DISPLAY=:0
ExecStartPre=/usr/bin/xset dpms force suspend
ExecStart=/usr/bin/slock

txtyash

map s LinkHints.activate
map S LinkHints.activateOpenInNewTab
map D closeTabsOnRight
map [ moveTabLeft
map ] moveTabRight
map r reload hard
map ( previousTab
map ) nextTab
map H previousTab
map L nextTab

txtyash

[Unit]
Description=Kmonad keyboard utility

[Service]
Type=simple
ExecStart=/usr/bin/kmonad /home/zim/.kmonad.kbd

[Install]
WantedBy=multi-user.target

txtyash

 setxkbmap -option altwin:swap_lalt_lwin
 setxkbmap -option caps:swapescape
# add these lines to your .xinitrc

txtyash

-- Yash's Xmonad config

{-# LANGUAGE MultiParamTypeClasses, FlexibleInstances #-} -- Hightlight Bar

-- ================================ IMPORT ==============================================
import XMonad
import XMonad.Util.EZConfig
import XMonad.Util.Ungrab
import qualified XMonad.StackSet as W
import qualified Data.Map as M