avidLearnerInProgress

Youtube channels:

1. Gaurav Sen
2. Rachit Jain
3. Akshay Saini
4. Tushar Roy
5. mycodeschool
6. Saurabh School
7. Keerthi Purswani
8. Nick White
9. Back To Back SWE

sd031

Funtions: 

Writing Functions:

Normal function:
get_name() {
  echo "John"
}
echo "You are $(get_name)"

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Dockerizing Any Application Using Dockerfile - Full Step by Step Process to make docker image:

What is the Dockerfile?
Dockerfiles are instructions. They contains all of the commands used to build an image.

Docker images consist of read-only layers.
Each represents a Dockerfile instruction.
Layers are stacked.
Each layer is a result of the changes from the previous layer.
Images are built using the docker image build command.

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Basic Linux Shell Scripting:

What is Shell?
The shell executes a program in response to its prompt. When you give a command, the shell searches for the program, and then executes it. For example, when you give the command ls, the shell searches for the utility/program named ls, and then runs it in the shell. The arguments and the options that you provide with the utilities can impact the result that you get. The shell is also known as a CLI, or command line interface.

Types of shells:
Primaryly there is two types of shell:
Bourne shell − If you are using a Bourne-type shell, the $ character is the default prompt. 
It has sub categories: Bourne shell (sh), Korn shell (ksh), Bourne Again shell (bash), POSIX shell (sh)

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Basic Linux Utilities:

man <name> - Read the manual page of <name>

man <section> <name> - Read the manual page of <name>, related to the given section. 

man -k <editor> - Output all the software whose man pages contain <editor> keyword.

man -K <keyword> - Outputs all man pages containing <keyword> within them.

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Linux Series part 2: File & Folder Permission Management:

To see file list, their crrent permission level and much more, you can run:
ls -la -lh -lt  
(To know more on ls commands check tutorial: https://www.youtube.com/watch?v=h6sDtGN5hYs)

chmod <specification> filename : Change the file permissions. Specifications = u user/owner, g group, o other, + add permission, - remove, r read, w write,x execute.

chmod -R <specification> dir-name: Change the permissions of a directory recursively. To change permission of a directory and everything within that directory, use this command.

IvanIsCoding

// Ivan Carvalho
// Problem A - Educational Dynamic Programming Contest - AtCoder
// Link : https://atcoder.jp/contests/dp
#include <bits/stdc++.h>
using namespace std;

const int MAXN = 1e5 + 10;
const int INF = 2*1e9;

int dp[MAXN],N,K,h[MAXN];

filipeximenes

spinners = (
   Spinner.objects
          .using(request.customer.name)
          .annotate(
              avg_duration=Avg('owned_spinners__spins__duration'))
          .order_by('-avg_duration'))

valaparthvi

from buckets.fields import S3FileField
from datetime import datetime, timezone, timedelta
from django.conf import settings
from django.db import models
from django.dispatch import receiver
from django.utils.translation import ugettext as _
from django.core.mail import send_mail
from django.template.loader import render_to_string
import django.contrib.auth.models as auth
import django.contrib.auth.base_user as auth_base

nikhita

How to update the Go version

System: Debian/Ubuntu/Fedora. Might work for others as well.

1. Uninstall the exisiting version

As mentioned here, to update a go version you will first need to uninstall the original version.

To uninstall, delete the /usr/local/go directory by: