Displays the left and right files (prefixed with a and b) and the left and right commit hashes.The output may be broken down into the following sections: ( 3) You can think of this as essentially being the previous and current version. Note that the following sections may refer to "left" and "right" versions. The output structure is easily explained, but can be tricky to fully grasp. Here is an example of the git diff default usage and output: $ git diff The git diff command outputs a text based representation known as the unified format. In addition, the git diff output can be formatted to show file names only, instead of the full textual diff. However, git diff can be used anywhere on your filesystem. Most Git commands such as git add and git commit will throw an error like fatal: not a git repository (or any of the parent directories). This is one of the few Git commands that doesn't even need to be used within an existing Git repo. Git diff can even compare one or more files that aren't tracked by Git, or are even outside of the working directory. What do we mean by two "things"? Almost anything that you want: working directory, staging tree, HEAD, committed changes, any branch, or tag. When I merge from somebody, I trust them but on the other hand, hey they might have stopped using their medication, so I trust them but, let's just be honest here, they might have been ok yesterday, but today might not be a good day, so I do diffstat and git does that by default" - Linus Torvalds "After every merge by default git will do a diffstat of everything that changed as a result of that merge because I do care about that. It provides more detail than git status or git log, and is much more flexible in its applications. Git diff is a command-line tool used to determine the differences between two things, per line or even per character. Let's break it down.Ī basic understanding of Git version control is recommended to get the most out of this article. As you will see, this command is particularly flexible and powerful. In this article we will explore the ins and outs of the git diff command and how to use it. ![]() But how useful is it when you want to compare two or more versions in a repository? You may have heard that Git is a great way to store version history. How Do I Save a Result From Git Diff and Apply It Later?.
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