Backup main

.github/workflows/stale.yml

@@ -0,0 +1,27 @@
+# This workflow warns and then closes issues and PRs that have had no activity for a specified amount of time.
+#
+# You can adjust the behavior by modifying this file.
+# For more information, see:
+# https://github.com/actions/stale
+name: Mark stale issues and pull requests
+
+on:
+  schedule:
+  - cron: '20 7 * * *'
+
+jobs:
+  stale:
+
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write
+
+    steps:
+    - uses: actions/stale@v5
+      with:
+        repo-token: ${{ secrets.GITHUB_TOKEN }}
+        stale-issue-message: 'Stale issue message'
+        stale-pr-message: 'Stale pull request message'
+        stale-issue-label: 'no-issue-activity'
+        stale-pr-label: 'no-pr-activity'

.gitignore

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+# OS
+.DS_Store
+Thumbs.db
+
+# Logs
+*.log
+*.pid
+
+# Environment
+.env
+.env.*
+
+# Python
+__pycache__/
+*.pyc
+.venv/
+
+# Node
+node_modules/
+
+# Build
+build/
+dist/
+
+# Terraform
+.terraform/
+*.tfstate
+*.tfstate.*
+crash.log
+
+# Kubernetes
+.kube/
+
+# IDE
+.vscode/
+.idea/
+
+# Caches
+.cache/
+.pytest_cache/
+coverage/
+CLAUDE.md

2023/day1/tasks.md → 2023/day01/README.md

@@ -5,7 +5,8 @@ This is the day you have to Take this challenge and start your #90DaysOfDevOps w
 - Fork this Repo.
 - Start with a DevOps Roadmap[https://youtu.be/iOE9NTAG35g]
 - Write a LinkedIn post or a small article about your understanding of DevOps
- - What is DevOps
- - What is Automation, Scaling, Infrastructure
- - Why DevOps is Important, etc
-
+- What is DevOps
+- What is Automation, Scaling, Infrastructure
+- Why DevOps is Important, etc
+
+[Next Day →](../day02/README.md)

2023/day01/devops.txt

@@ -0,0 +1,8 @@
+DevOps is a methodology which Involves practices to bridge the gap of Dev and ops team by using Open source automation build tools.
+These are the articles which I refered to,
+
+
+formal defination   :   "DevOps is the union of people, process, and products to enable continuous delivery of value to our end users."
+
+The main goal of DEVOPS is to shorten cycle time. Start with the release pipeline. How long does it take to deploy a change of one line of code or configuration.
+

2023/day02/README.md

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+Day 2 Task: Basics linux command
+
+Task: What is the linux command to
+
+1. Check your present working directory.
+2. List all the files or directories including hidden files.
+3. Create a nested directory A/B/C/D/E
+
+Note: [Check this file for reference](basic_linux_commands.md)
+
+Check the basic_linux_commands.md file on the same directory day2
+
+[← Previous Day](../day01/README.md) | [Next Day →](../day03/README.md)

2023/day02/basic_linux_commands.md

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+## Basic linux commands
+
+### Listing commands
+```ls option_flag arguments ```--> list the sub directories and files avaiable in the present directory
+
+Examples:
+
+- ``` ls -l ```--> list the files and directories in long list format with extra information
+- ```ls -a ```--> list all including hidden files and directory
+- ```ls *.sh``` --> list all the files having .sh extension.
+
+- ```ls -i ``` --> list the files and directories with index numbers inodes
+- ``` ls -d */``` --> list only directories.(we can also specify a pattern)
+
+### Directoy commands
+- ```pwd``` --> print work directory. Gives the present working directory.
+
+- ```cd path_to_directory``` --> change directory to the provided path
+
+- ```cd ~ ``` or just  ```cd ``` --> change directory to the home directory
+
+- ``` cd - ``` --> Go to the last working directory.
+
+- ``` cd ..``` --> change directory to one step back.
+
+- ``` cd ../..``` --> Change directory to 2 levels back.
+
+- ``` mkdir  directoryName``` --> to make a directory in a specific location
+
+Examples:
+```
+mkdir newFolder              # make a new folder 'newFolder'
+
+mkdir .NewFolder              # make a hidden directory (also . before a file to make it hidden)
+
+mkdir A B C D                  #make multiple directories at the same time
+
+mkdir /home/user/Mydirectory   # make a new folder in a specific location
+
+mkdir -p  A/B/C/D              # make a nested directory
+```

2023/day02/solution.md

@@ -0,0 +1,101 @@
+
+## Basic linux commands
+
+-  ``ls`` --> The ls command is used to list files or directories in Linux and other Unix-based operating systems.
+
+![ls](https://user-images.githubusercontent.com/76457594/210222403-35776fbc-e509-4c9c-a0ad-e5975599ffab.png)
+
+- ``` ls -l ```--> Type the ls -l command to list the contents of the directory in a table format with columns including.
+
+       - content permissions
+       - number of links to the content
+       - owner of the content
+       - group owner of the content
+       - size of the content in bytes
+       - last modified date / time of the content
+       - file or directory name
+
+![Uploading ls -l.png…]()
+
+
+
+- ```ls -a ```--> Type the ls -a command to list files or directories including hidden files or directories. In Linux, anything that begins with a . is considered a hidden file.
+
+![ls -a](https://user-images.githubusercontent.com/76457594/210223013-9353abf0-159c-4797-a19f-3b78a8d4ef00.png)
+
+- ```ls *.sh``` -->
+
+
+![ls * sh](https://user-images.githubusercontent.com/76457594/210223067-f5c3a5bf-09b4-4525-90e7-9ce61186ae2e.png)
+
+
+- ```ls -i ``` --> List the files and directories with index numbers in oders
+
+![ls-i](https://user-images.githubusercontent.com/76457594/210225502-946551c7-fd81-402b-b8ce-091792e24c44.png)
+
+
+
+- ``` ls -d */``` --> Type the ls -d */ command to list only directories.
+
+
+![ls-d*](https://user-images.githubusercontent.com/76457594/210223178-f7097a96-31b1-4c98-8b81-2e5b0e3a7bb7.png)
+
+
+## Directoy commands
+- ```pwd``` --> Print work directory. Gives the present working directory.
+
+![pwd](https://user-images.githubusercontent.com/76457594/210223234-e5f3a48c-1b08-4bce-943e-4fed50a12700.png)
+
+- ```cd path_to_directory``` --> Change directory to the provided path.
+
+![cd](https://user-images.githubusercontent.com/76457594/210223291-355b8eb1-d1b5-41a4-a1b3-07fe7d786794.png)
+
+- ```cd ~ ``` or just  ```cd ``` --> Change directory to the home directory.
+
+![cd ~](https://user-images.githubusercontent.com/76457594/210223377-845975d3-344d-49d3-946e-05f2d2170ac4.png)
+
+- ``` cd - ``` --> Go to the last working directory.
+
+![cd -](https://user-images.githubusercontent.com/76457594/210223414-d6333b9c-21cb-4053-abb9-871bbca5db08.png)
+
+
+- ``` cd ..``` --> Chnage directory to one step back.
+
+![cd](https://user-images.githubusercontent.com/76457594/210223531-956598ad-301c-486a-b02e-6e69c4104adb.png)
+
+- ``` cd ../..``` --> Use ls ../.. for contents two levels above.
+
+![cd  bs](https://user-images.githubusercontent.com/76457594/210223634-2f37f616-5857-4f31-a9a6-796b0f0ab1e5.png)
+
+
+- ``` mkdir  directoryName``` --> Use to make a directory in a specific location
+
+![mkdir  ](https://user-images.githubusercontent.com/76457594/210224037-9ba396ad-77a8-48d4-8d28-2fa513c2b06a.png)
+
+
+- ``` mkdir .NewFolder ``` --> Make a hidden directory (also . before a file to make it hidden)
+
+
+![mkdir  ](https://user-images.githubusercontent.com/76457594/210224230-89db3d98-f04a-4edd-998f-0f9a0219f06e.png)
+
+
+- ```mkdir A B C D ``` --> Make multiple directories at the same time.
+
+![mkdir A B C](https://user-images.githubusercontent.com/76457594/210224267-6d14de9a-2c05-4ea9-853f-ddb44dda8f23.png)
+
+
+- ```mkdir /home/user/Mydirectory ``` --> make a new folder in a specific location
+
+![mkdir inside](https://user-images.githubusercontent.com/76457594/210224331-dc7a2916-a64c-40ed-8951-7e2677df4957.png)
+
+
+- ```mkdir -p  A/B/C/D ``` --> Make a nested directory
+
+![mkdir-p](https://user-images.githubusercontent.com/76457594/210224365-78ec406e-0a2e-4666-a30d-ac406f0dd695.png)
+
+
+
+
+
+
+

2023/day03/README.md

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+Day 3 Task: Basic Linux Commands
+
+Task: What is the linux command to
+
+1. To view what's written in a file.
+2. To change the access permissions of files.
+3. To check which commands you have run till now.
+4. To remove a directory/ Folder.
+5. To create a fruits.txt file and to view the content.
+6. Add content in devops.txt (One in each line) - Apple, Mango, Banana, Cherry, Kiwi, Orange, Guava.
+7. To Show only top three fruits from the file.
+8. To Show only bottom three fruits from the file.
+9. To create another file Colors.txt and to view the content.
+10. Add content in Colors.txt (One in each line) - Red, Pink, White, Black, Blue, Orange, Purple, Grey.
+11. To find the difference between fruits.txt and Colors.txt file.
+
+Reference: https://www.linkedin.com/pulse/linux-commands-devops-used-day-to-day-activit-chetan-/
+
+[← Previous Day](../day02/README.md) | [Next Day →](../day04/README.md)

2023/day03/solution.md

@@ -0,0 +1,40 @@
+
+# Basic Linux Commands
+
+1. To view what's written in a file.
+    - ``` cat filename ``` 
+
+![3 1](https://user-images.githubusercontent.com/76457594/210305889-d19f82d5-dbb1-46fc-99e2-b217146b6e8a.png)
+
+
+
+2. To change the access permissions of files.
+
+    - ``` chmod 777 foldername ``` 
+
+![Uploading 3.2.png…]()
+
+3. To check which commands you have run till now.
+
+   - ``` history ``` 
+
+  ![Uploading 3.3.png…]()
+
+4. To remove a directory/ Folder.
+
+      - ``` rm filename ``` 
+
+ ![3 4](https://user-images.githubusercontent.com/76457594/210308917-7281e0eb-6fcb-4554-8ffe-835cf0b961d1.png)
+
+    -  ``` rmdir foldername ``` 
+
+ ![3 4b](https://user-images.githubusercontent.com/76457594/210309299-367e6253-7e11-4ead-a19c-6eb3922780d1.png)
+
+5. To create a fruits.txt file and to view the content.
+    - ``` vim fruits.txt ``` 
+    -  ```  cat fruits.txt ``` 
+
+![3 5](https://user-images.githubusercontent.com/76457594/210311435-e6f8aa0c-dc0c-44a6-84e7-6e4c91e4ea87.png)
+
+
+

2023/day04/README.md

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+# Day 4 Task: Basic Linux Shell Scripting for DevOps Engineers.
+
+## What is Kernel
+
+The kernel is a computer program that is the core of a computer’s operating system, with complete control over everything in the system.
+
+## What is Shell
+
+A shell is special user program which provide an interface to user to use operating system services. Shell accept human readable commands from user and convert them into something which kernel can understand. It is a command language interpreter that execute commands read from input devices such as keyboards or from files. The shell gets started when the user logs in or start the terminal.
+
+## What is Linux Shell Scripting?
+
+A shell script is a computer program designed to be run by a linux shell, a command-line interpreter. The various dialects of shell scripts are considered to be scripting languages. Typical operations performed by shell scripts include file manipulation, program execution, and printing text.
+
+**Tasks**
+
+- Explain in your own words and examples, what is Shell Scripting for DevOps.
+- What is `#!/bin/bash?` can we write `#!/bin/sh` as well?
+- Write a Shell Script which prints `I will complete #90DaysOofDevOps challenge`
+- Write a Shell Script to take user input, input from arguments and print the variables.
+- Write an Example of If else in Shell Scripting by comparing 2 numbers
+
+Was it difficult?
+
+- Post about it on LinkedIn and Let me know :)
+
+Article Reference: [Click here to read basic Linux Shell Scripting](https://devopscube.com/linux-shell-scripting-for-devops/)
+
+YouTube Video: [EASIEST Shell Scripting Tutorial for DevOps Engineers](https://www.youtube.com/watch?v=_-D6gkRj7xc&list=PLlfy9GnSVerQr-Se9JRE_tZJk3OUoHCkh&index=3)
+
+[← Previous Day](../day03/README.md) | [Next Day →](../day05/README.md)

2023/day05/README.md

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+# Day 5 Task: Advanced Linux Shell Scripting for DevOps Engineers with User management
+
+If you noticed that there are a total 90 sub-directories in the directory '2023' of this repository. What did you think, how did I create 90 directories? Manually one by one or using a script, or a command?
+
+All 90 directories within seconds using a simple command.
+
+` mkdir day{1..90}`
+
+### Tasks
+
+1. You have to do the same using Shell Script i.e using either Loops or command with start day and end day variables using arguments -
+
+So Write a bash script create directories.sh that when the script is executed with three given arguments (one is the directory name and second is start number of directories and third is the end number of directories ) it creates a specified number of directories with a dynamic directory name.
+
+Example 1: When the script is executed as
+
+`./createDirectories.sh day 1 90`
+
+then it creates 90 directories as `day1 day2 day3 .... day90`
+
+Example 2: When the script is executed as
+
+`./createDirectories.sh Movie 20 50`
+then it creates 50 directories as `Movie20 Movie21 Movie23 ...Movie50`
+
+Notes:
+You may need to use loops or commands (or both), based on your preference . [Check out this reference: https://www.geeksforgeeks.org/bash-scripting-for-loop/](https://www.geeksforgeeks.org/bash-scripting-for-loop/)
+
+2.  Create a Script to backup all your work done till now.
+
+Backups are an important part of DevOps Engineer's day to Day activities
+The video in References will help you to understand How a DevOps Engineer takes backups (it can feel a bit difficult but keep trying, Nothing is impossible.)
+Watch [this video](https://youtu.be/aolKiws4Joc)
+
+In case of Doubts, post it in [Discord Channel for #90DaysOfDevOps](https://discord.gg/hs3Pmc5F)
+
+3.  Read About Cron and Crontab, to automate the backup Script
+
+Cron is the system's main scheduler for running jobs or tasks unattended. A command called crontab allows the user to submit, edit or delete entries to cron. A crontab file is a user file that holds the scheduling information.
+
+Watch This video as a Reference to Task 2 and 3 [https://youtu.be/aolKiws4Joc](https://youtu.be/aolKiws4Joc)
+
+4.  Read about User Management and Let me know on Linkedin if you're ready for Day 6.
+
+A user is an entity, in a Linux operating system, that can manipulate files and perform several other operations. Each user is assigned an ID that is unique for each user in the operating system. In this post, we will learn about users and commands which are used to get information about the users. After installation of the operating system, the ID 0 is assigned to the root user and the IDs 1 to 999 (both inclusive) are assigned to the system users and hence the ids for local user begins from 1000 onwards.
+
+5.  Create 2 users and just display their Usernames
+
+[Check out this reference: https://www.geeksforgeeks.org/user-management-in-linux/](https://www.geeksforgeeks.org/user-management-in-linux/)
+
+Post your daily work on Linkedin and let [me](https://www.linkedin.com/in/shubhamlondhe1996/) know , writing an article is the best :)
+
+[← Previous Day](../day04/README.md) | [Next Day →](../day06/README.md)