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SETUP & INIT
Install Git:
Windows: Download Git from https://git-scm.com/download/win
Verify installation: git --version
Initialize a repository: git init
Clone a repository: git clone [URL]
Check repository status: git status
2. STAGE & SNAPSHOT
Add a file to staging: git add [file]
Unstage a file: git reset [file]
Commit staged content: git commit -m "[descriptive message]"
Show changes in working directory: git diff
Show changes between staging and last commit: git diff –staged
3. BRANCH & MERGE
List branches: git branch
Create a new branch: git branch [branch-name]
Switch to another branch: git checkout [branch-name]
Merge a branch into current one: git merge [branch]
Show commit history: git log
4. INSPECT & COMPARE
Show commits on branchA not on branchB: git log branchB..branchA
Show diff of what is in branchA but not in branchB: git diff branchB...branchA
Show a specific commit: git show [SHA]
Show commits that changed a file: git log --follow [file]
5. TRACKING PATH CHANGES
Delete a file: git rm [file]
Move or rename a file: git mv [existing-path] [new-path]
Show commit logs with path changes: git log --stat -M
6. IGNORING PATTERNS
Create a .gitignore file: logs/, .notes, pattern/
System-wide ignore patterns: git config --global core.excludesfile [file]
7. SHARE & UPDATE
Add a remote repository: git remote add [alias] [url]
Fetch from a remote repository: git fetch [alias]
Merge a remote branch into current branch: git merge [alias]/[branch]
Push to a remote branch: git push [alias] [branch]
Pull from a remote repository: git pull
8. REWRITE HISTORY
Rebase current branch onto another: git rebase [branch]
Hard reset to a specific commit: git reset --hard [commit]
9. TEMPORARY COMMITS
Stash changes: git stash
List stashes: git stash list
Apply and remove the latest stash: git stash pop
Remove a stash: git stash drop
10.MERGE STRATEGIES
Merge Commit
Creates a new commit to record the merge, preserving the history of both branches:git merge <branch-name>
Fast-Forward Merge
Applies changes directly to the target branch if it has not diverged since the branch was created. Results in a linear history without additional merge commits.
git merge --ff-only <branch-name>
Rebase and Merge
Applies changes from one branch onto another by replaying each commit on top of the target branch.(Results in a linear history and can help maintain a cleaner commit history)
git checkout <target-branch>
git pull origin <target-branch>
git rebase <source-branch>
git merge <source-branch>
Squash and Merge
Combines all changes from the source branch into a single commit before merging into the target branch. (Useful for simplifying the commit history and keeping the target branch clean).
git checkout <target-branch>
git pull origin <target-branch>
git merge --squash <source-branch>
git commit -m "Merge <source-branch> into <target-branch>"
git push origin <target-branch>
Interactive Rebase
Allows for selective editing, reordering, or squashing of commits before merging(Provides fine-grained control over the commit history)
git rebase -i <target-branch>
( Follow the prompts to edit, reorder, or squash commits)
git push origin <target-branch> --force
11.ECLIPSE PROJECT TO GIT
step 1.Open Eclipse and Your Project
Launch Eclipse and open your project.
step2. Install Git Plugin (EGit)
Go to Help > Eclipse Marketplace > Search for EGit > Install EGit > Restart Eclipse.
step3.Initialize Git Repository
In the Project Explorer, right-click on your project > Team > Share Project > Select Git > Next.
Create or select an existing repository:
To create a new repository: Select Create and specify the directory.
To use an existing repository: Select Use or create a repository in the parent folder of the project.
Click Finish.
step4.Commit Your Project to the Repository
Right-click on your project > Team > Commit.
Add a commit message.
Select the files to commit (usually all files in your project).
Click Commit.
step5.Add Remote Repository (if required)
Right-click on your project > Team > Remote > Configure Push to Upstream.
In the URI field, enter the URL of your remote Git repository.
Click Next and configure the repository details (such as authentication if needed).
Click Finish.
step6.Push Your Changes to the Remote Repository
Right-click on your project > Team > Push to Upstream.
Review the changes to be pushed.
Click Next.
Click Finish.
CREATE AN ACCOUNT & REPOSITORY ON GITHUB
1.Create an Account on GitHub
Open GitHub and sign up for an account.
2.Create a Repository on GitHub
Log in to GitHub.
Click the + icon in the top-right corner and select New repository.
Fill in the repository name, description (optional), and choose whether the repository is public or private.
Click Create repository.
3.Open Git Perspective in Eclipse
Open Eclipse.Navigate to Window > Perspective > Open Perspective > Other.
Select Git and click Open.
4.Clone the Git Repository
In the Git perspective
· click the Clone a Git repository icon (or go to File > Import > Git > Projects from Git > Clone URI).
· Enter the repository URL from GitHub (found on the repository's main page).
· Provide your GitHub credentials if prompted.
· Click Next.
5.Provide Repository URL and Credentials
In the Clone Git Repository wizard:
· Paste the repository URL.
· Enter your GitHub username and password or personal access token.
· Click Next and follow the prompts.
· Select the branch to clone.
· Click Next, (choose the local directory to clone to)
· click Finish.
6.Add Eclipse Project to this Repository
· In the Project Explorer,
· right-click on your project>Select Team > Share Project.>Git > Next.
· Select the repository you cloned >Finish.
7.Commit and Push
· Right-click on your project.
· Select Team > Commit.
· Add a commit message.
· Select the files to commit (usually all files in your project).
· Click Commit.
8. Push your changes to GitHub:
· Right-click on your project.
· Select Team > Push to Upstream.
· Review the changes to be pushed.
· Click Next.
· Click Finish.
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