DEV Community: JAYALAKSHMI S

USEFUL GIT COMMANDS

JAYALAKSHMI S — Thu, 24 Apr 2025 19:45:37 +0000

✅1. git diff

Description:

Shows the differences between files in your working directory and the index (staging area).

Command:
git diff

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✅2. git log

Description:

Displays the commit history of the current branch with details such as commit ID, author, and date.

Command:
git log

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✅3. git clone

Description:

Clones an existing remote Git repository into a local directory.
git clone https://github.com/username/repository.git

Command:
git clone https://github.com/jayalakshmis04/jayalakshmis04.git

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✅4. git fork

Description:

Creates a personal copy of someone else's repository into your GitHub account.

Note: This is done from the GitHub interface, not the command line.

Command:

No terminal command; click "Fork" on the top right of a GitHub repository.

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✅5. git pull

Description:

Fetches and integrates changes from the remote repository into the current branch.

Command:
git pull origin main

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✅6. git push

Description:

Sends committed changes to a remote repository like GitHub.

Command:
git push origin main

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✅7. git blame

Description:

Shows who last modified each line of a file and when.

Command:
git blame filename

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✅8. git merge conflict

Description:

Occurs when changes from different branches conflict during a merge.

Command to simulate:

Make conflicting changes in two branches

git merge feature-branch

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Conflicted File:

✅9. git branch

Description:

Lists existing branches or creates a new one.

Command:
git branch

To create a new branch

git branch new-branch

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✅10. git ignore

Description:

Used to exclude files and directories from version control by specifying them in a .gitignore file.

Command:

Create or edit .gitignore file and add the filenames or patterns to exclude.

Example:
node_modules/
*.log
.env

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Dockerize a Python ML Model and push in GitHub(With Steps + ScreenShots)

JAYALAKSHMI S — Thu, 24 Apr 2025 18:15:45 +0000

📁 Git Workflow

Checkout to main

Command:
git checkout main

2.Create a new branch (e.g., feature branch)

Command:
git checkout main -b feature-24mcr042

3.(Optional) Add a branch through GitHub UI

Go to GitHub → Your Repo → Branch Dropdown → Type branch name → Create branch

4.Check current branches

Command:
git branch

5.Check status of changes

Command:
git status

6.Add all changes

Command:
git add .

Commit your changes

Command:
git commit -m "Added hello_world.py"

8.Push your branch to GitHub

Command:
git push origin feature-24mcr042

9.Create a Pull Request on GitHub

Go to GitHub → Pull Requests → New Pull Request → Select branch → Create Pull Request → Merge Pull Request → Confirm Merge

DOCKER COMMANDS

1.Check Docker version

Command:
docker --version

2.Create a Dockerfile in your project

3.Build Docker image

Command:
docker build -t jayalakshmi906/mca-24mcr042-ml:latest .

4.List Docker images

Command:
docker images

5.Push Docker image to DockerHub

Command:
docker push jayalakshmi906/mca-24mcr042-ml

6.Open Docker Desktop to view images and containers

Run the Docker container

8.Verify the Docker image and running container in Docker Desktop (GUI)

PUSH DOCKER FILE INTO GITHUB

Main branch

First Branch: feature-24mcr042

Second Branch: docker-24mcr042

11 Essential Git Commands Every Developer Should Know (With Screenshots)

JAYALAKSHMI S — Wed, 23 Apr 2025 17:54:42 +0000

1. git init

Description:
Initializes a new Git repository in your project directory.

Command:

git init

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2. git add

Description:
Stages changes (files or updates) to be committed.

Command:
git add

To stage all files

git add .

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3. git commit

Description:

Records the staged changes to the repository with a message.

Command:
git commit -m "Your commit message"

Screenshot:

4. git status

Description:

Displays the state of the working directory and staging area.

Command:
git status

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5. git log

Description:

Shows the commit history for the current branch.

Command:
git log

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6. git remote add origin

Description:
Adds a remote repository (such as one on GitHub) to your local repository.

Command:
git remote add origin https://github.com/username/repository.git

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7. git branch

Description:
Lists all branches or creates a new branch.

Command:
git branch

Create a new branch

git branch

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8. git branch -M

Description:

Renames the current branch to a new name.

Command:
git branch -M main

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9. git config --global user.name

Description:

Sets your Git username globally on your machine.

Command:
git config --global user.name "Your Name"

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10. git config --global user.email

Description:

Sets your Git email globally on your system.

Command:
git config --global user.email "you@example.com"

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11. git push

Description:
Uploads your committed changes to a remote repository like GitHub.

Command:
git push origin main

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