Maven

 

• Maven is an OS, Java Based, Build tool.
• Maven is going to support only "Java Projects".
• To create Packages/ Build Artifacts we will use Maven.
• Java--------->  Ant, Maven, Gradle
• .Net ---------> Nant, MS-Build
• Python------> PYBuilder
• Puby--------> Rake
• JS, Node JS, Angular-------> Grunt, Gulp 

1. How to know which version we are using?

        cat /etc/release                     (Latest version is ---11)

Types of Applications in Java:

• Java Standalone apps
• Jar------Java Archive
• Java Code
• .Class-files
• Java Web apps
• War------Web Archive
• War = Jar + Web content ------(Html,CSS,js,XML,HTMLImage)
• Java Enterprise Apps
• Ear------Enterprise Archive
• Ear =  Jar + 1 War

Default Build Script File Name

        Pom.xml -------------------- Package Object Model

<project>

<groupId>         com.Company_Name      </groupId>

<artifactId>       Project_Name                 </artifactId>

<packaging>     jar                                   </packaging>

<version>         0.0.1-SNAPSHOT        </version>

</project>

        

2. Is it possible to change the Pom.xml file name?

    Yes 

    Maybe didn't we can give it. I didn't try it

• Along with the Source Code Developer will prepare Build Script also.

Directory Structure:

• Bin:      binaries--mvn   
• Conf:    Settings.xml
• Lib:       libraries---java files
• Boot:

Installation:

• Java 8 -----Java 1.8
• java -version
• mvn -version

Maven Repositories:

• Maven Local Repo
• C:\Users\Reddy Shekar\.m2\repository------------Windows
  
• /home/ReddySekhar/.m2/repository----------------Linux

• Maven Central Repo
• it will be by the Maven community team.

Remote Repo

• It will be used within the organization

3. Is there any chance of changing the default path to a custom one?

      

    Yes Can change that custom path

• Setting.xml
• LocalRepository <Tag>

 Maven life Cycles:

life Cycles              Goals

Clean----------------It will delete the previous build files.

Site------------------To generate a document for your source code.

Default-------------

• Validate------------It will validate your project Structure and resource files.
• Compile-----------It will compile your source code.
• Test----------------It will use to run Junit Test cases.
• Package-----------It will create packages / Build Artifacts.
• Install-------------It will store your build Build Artifacts in a local Repo.
• Deploy-----------It will store your build Build Artifacts in a Remote Repo.

4. What is the difference between the Maven Local Repo & Remote Repo?

• Install-------------It will store your build Build Artifacts in a local Repo.
• Deploy-----------It will store your build Build Artifacts in a Remote Repo.

5. How to skip the Test cases?

    

    

AWS--Sree

 

 AWS

=========================================================================

Class:01

Introduction

Class:02

North Virginia  (Zone US-EAST-1)--------------> 6 Availability 

mslookup www.paytm.com

IP addressing:-

IPV4------------>32 Bit size----------------192.168.33.1 *************

IPV6------------>128 Bit Size---------------fe80::314f:50bb:42fa:743a%5

0.0.0.0 to 255.255.255.255------------------------>R F C 1918

• Class A        1.0.0.1        to    126.255.255.254            {Public IP's}-----Hallticket No: ABCD1234
•                     10.0.0.0      to    10.255.255.255              {Private IP's}----Roll no:56      
• Class B       128.1.0.1     to    191.255.255.254
• Class C       192.0.1.1     to   223.255.254.254
• Class D       Reserved
• Class E       Reserved

NAT:- (Network Address Translation)

• Private IP is not internet routable,
• To route to the internet, we are going to use a device called a Gateway router,
• Which will convert Private IP addresses to public IPs wise versa, called Network Address Translation (NAT).

Read more »

Youtube

 GIT

001. What is git reset? types of git reset?

002. How to delete the local branch & remote branch in git?

• Local branch:  git branch -D <bn>
• Remote branch: git push origin --delete <bn>

003. Difference between git diff and git status?

• git diff: 
• git status:

004. What are hooks in git?

• Hooks are special scripts
• it will be execute before or after a certain commands

005. What is the importance .git directory?

• branch
• config
• hooks
• info
• logs
• HEAD
• Objects

006. What are the branches, and differences between remote and local branches?

007. What Branching strategy that you are familiar with?

• Master (or) main
• Development
• Feature/01
• Feature/02
• Creata a PR
• qa
• dev
• pre-pord
• master-main
• tag

008. What is PR (Pull Request)? What's the importance of PR?

009. Which version of git you have used? 

• git version
• git version 2.17.1

011. What is git squash?

git merge --squash <bn>

012. Command to list all commits?

     git log

git log --oneline

Linux & Shell Script:

001. Command to find empty files in a given directory ?

    find . -empty

002. Commands you will use it for configuring ssh connectivity between 2 machines and what files                 will  be  present in .ssh folder ?

• First we need to private key & public key to connect
• ssh-keygen
• ~/.ssh
• id_rsa-------id_rsa.pub----know_hosts----authorised_key

003. How to schedule a shell script in unix machine?

Crontab

004. Command to get load average?

    top

005. Need to identify IP Address in log file and count IP addresses in log file ?

• git clone git@github.com:Sundupalli/Unix_and_shell-Deekshith.git  
• grep -E -o "([0-9]{1,3}[.]){3}[0-9]{1,3}" logfile | sort | uniq -c | sort -nr

006. What is command for checking the running process? how to get PID of process?

• ps
• ps -eaf

007. Command to get whether certain port is listing or not?

netstat -tunlap

008. How to identify the number of parameters that has been sent to shell script?

vi test.sh

sh test.sh

sh test.sh 3 4 6 

vi sh test.sh 3 4 6 7

echo "Hello world"

echo "The number of parameters $#"

ans:-  Hello world

The number of parameters 4

009. Command to delete empty line in a file?  

• sed '/^$/d' test.sh
• sed -i '/^$/d' test.sh

010. What is exit status?

echo $?

011. Given machine, how will you identify which machine it is?

uname -a

Shell Scripting By Udemy

 echo $SHELL   

chsh -s /bin/bash

Class 02 [ Shells vs Scripts ]

• What is the Bash shell is 
•  A "Program" that "interprets" the commands you type in your terminal and "passes" them on to the "Operating System".
• 
  
• BASH = Bourne Again Shell
• Based on the Bourne Shell (sh), Created by Stephen Bourne in 1979.
• its feature-rich.
• Its fast
• Its very common.
• The difference between shell and scripts
• A Shell script is a file containing commands for the shell.
• A Bash script is simply a file containing commands for the Bash shell.
• Why Bash is more popular
• Why Scripting is a useful skill to learn...

Questions

1. What is a bash script?
1. A Bash script contains a list of commands specifically for the Bash shell.
2. A shell is a program that interprets commands and passes them on to the operating system?
1. True
3. A benefit of bash is that it has a lot of features
1. True
4. Why should you write a script?
1. The main benefits of writing scripts is to help you automate tasks and save you time

Class 03 [ Bash Script Structure - Part 1 - Core Components ]

• file <File_name>
• #!/bin/bash----------------------------------------------> Shebang line
• #!/usr/bin/python3
• Exit Statement  ( 0 = Sucessfull ; 1-255 = Unsucessfull )

• #!/bin/bash
• echo "This is my first Script"
• exit 0

after that, we need to check the permission of the particular file.

ls

give permission to the file

chmod +x <File_name>

run the file

./<File_name>

Class 04 [ Bash Script Structure - Part 2 - Professional Components ]

 Comments:

   Single line Comments -----------#

   Double line Comments----------

# Author: Y Reddy Sekhar

# Date Created: 10-11-2022

# Last Modified: 10-11-2022

# Description 

# Prints "This is my first script" to the terminal

# Usage

# Provide file name here...

Class 05 [ Setting up Secure Script Permissions ]

• The basics of file permissions
• Setting file permission on your script

ls-l

chmod 744 <File_name>

chmod 777 <File_name>

Class 06 [ Project: Backup Script ]

File downloaded on your personal computer go and see it...

 

Class 07 [ Backup Script - Project Solution ]

                    While doing practice watch again.

Class 08 [ Adding scripts to your PATH ]

• What is the PATH Variable?
• How to add directories to your PATH Variable

echo "$PATH"

Class 09 [ Section Summary ]

        Document downloaded