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In Git, .gitignore does not automatically ignore files that were already tracked before being listed in .gitignore. To resolve this, untrack these files using git rm --cached, followed by committing and optionally pushing the changes. This process ensures that previously tracked files are no longer monitored by Git, aligning the repository's tracked files with the current .gitignore settings. Remember, .gitignore only affects untracked files, so manual intervention is required for any already tracked.

In the article, we explore how to view the change history of files in Git using commands like git log, which shows detailed commit history, git log -p for commit history with patch details, and git blame, which annotates each line of a file with the last commit and author information. These tools are essential for tracking changes, understanding project evolution, and debugging in Git-managed projects.

Comparing changes between branches in Git is a crucial skill for developers managing multiple branches for features, bug fixes, or releases. This blog post guides you through the process of comparing two branches, such as `branch1` and `branch2`, to identify modifications. Using commands like `git diff` and `git log`, you can easily see the differences and review the commit history. These steps help maintain a clear and organized development workflow, ensuring you understand the progress and context of changes made in various branches.