Learn more about how to use git rebase

Git is one of the most popular version control tools currently. It has brought some changes, including supporting multiple branches and helping to manage code version updates. When we develop together in a team, there will often be times when we need to merge branches, and the use of Git Rebase is extremely important at this time. Let's take a look at the usage of Git Rebase.

First, let’s understand how Git branch merging works. There are two ways to merge Git branches: one is to merge branches, that is, use the git merge command, which merges the modifications of the two branches together. The other is to use Git Rebase. Git Rebase can apply changes from one branch to another branch. This approach is clearer and simpler than merging branches, and produces a tidy Git log.

The main function of Git Rebase is to reintegrate commits and place them in a clean commit record. It keeps our commit history tidy and helps us resolve merge conflicts. The operation process of Git Rebase is more complicated than the Merge operation, but it is still a very useful tool.

Let’s learn how to use Git Rebase through an example.

First, we create two branches: master and dev.

git checkout -b master
git checkout -b dev

On the dev branch, we create a new file and add the content, and then submit it.

touch file.txt
echo "This is a file." >> file.txt
git add .
git commit -m 'Added file.txt'

Switch back to the master branch and modify the file content.

git checkout master
echo "This is a modified file." > file.txt
git add .
git commit -m 'Modified file.txt'

Now we need to apply the commits from the dev branch to the master branch. We can do this using the git rebase command.

git rebase dev

After executing the above command, Git will apply the commits on the dev branch to the master branch. If merge conflicts occur, we need to resolve them manually.

Notes on Git Rebase:

1. It should not be performed on public branches.
2. Performing a Git Rebase operation may change the commit history, so it should be used with caution.
3. If multiple developers are collaborating on the same branch, they should be coordinated before merging.

In collaborative development, Git Rebase is a very important tool. It keeps our commit history clean and organized. Additionally, it helps us resolve merge conflicts. Understanding and using Git Rebase correctly is one of the skills that every developer must master.

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