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Viewing only staged changes

From: Git Essential Training

Video: Viewing only staged changes

In the last movie we saw how we could use git diff to get details about the changes that were in our working directory. In this movie we are going to see how we can do the same thing with our staging index. Now the first thing, of course, we need to do is put something in our staging index, so let's do that with first_file.txt. We know how to do that with git add first_file.txt, now it's in our staging index. Git status will show us, first_file, those changes are now staged. The changes to third_file.txt are just in our working directory.

Viewing only staged changes

In the last movie we saw how we could use git diff to get details about the changes that were in our working directory. In this movie we are going to see how we can do the same thing with our staging index. Now the first thing, of course, we need to do is put something in our staging index, so let's do that with first_file.txt. We know how to do that with git add first_file.txt, now it's in our staging index. Git status will show us, first_file, those changes are now staged. The changes to third_file.txt are just in our working directory.

If we were to do a git diff now, it would just report the changes that are in our working directory. So when I told you earlier that it was comparing your working directory with the repository, that's not quite true, it's actually comparing it against the staging index and the repository. So it's things that are unique, things that are different about the working directory only. So what about those changes for first_file, how do we see those? Well, we do the same thing using git diff, but now we pass in another option, which is staged, git diff --staged.

It's the option to diff that tells it to look at what's in the staging index and compare that against the repository. So now you can see we're only seeing changes that we made to first_file.txt. So git diff by itself will return the changes that are in the working directory. I also just want to note for you that git diff --staged in versions before 1.6 of Git, it was actually called cached. But that wasn't as clear to people and so they standardized on calling it the staging index, and it became called staged.

Now, you should be working with version 1.7 of Git or later, so it should be staged for you, but cached also still works, it does the same thing, it returns the exact same information. But we are going to stick with using staged. So now just like before, of course, if we git add our third_file, now git status, you can see that both of those files are now in the staging index and git diff returns no changes, git diff --staged will show us both sets of changes.

So the last thing we want to do is let's go ahead and just save our changes. So we've got these to be committed already, these are in our staging index, so we're just going to do git commit, and let's just give it a simple message, we'll say Minor text edits. So there it is committed, now if we do git status, our working directory is clean again.

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This video is part of

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Git Essential Training

89 video lessons · 32040 viewers

Kevin Skoglund
Author

 
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  1. 2m 46s
    1. Introduction
      1m 7s
    2. How to use the exercise files
      1m 39s
  2. 20m 24s
    1. Understanding version control
      4m 48s
    2. The history of Git
      7m 58s
    3. About distributed version control
      5m 4s
    4. Who should use Git?
      2m 34s
  3. 26m 12s
    1. Installing Git on a Mac
      3m 44s
    2. Installing Git on Windows
      5m 37s
    3. Installing Git on Linux
      1m 30s
    4. Configuring Git
      7m 29s
    5. Exploring Git auto-completion
      5m 35s
    6. Using Git help
      2m 17s
  4. 15m 49s
    1. Initializing a repository
      1m 58s
    2. Understanding where Git files are stored
      2m 34s
    3. Performing your first commit
      2m 4s
    4. Writing commit messages
      5m 22s
    5. Viewing the commit log
      3m 51s
  5. 17m 44s
    1. Exploring the three-trees architecture
      3m 57s
    2. The Git workflow
      3m 15s
    3. Using hash values (SHA-1)
      4m 7s
    4. Working with the HEAD pointer
      6m 25s
  6. 25m 52s
    1. Adding files
      5m 59s
    2. Editing files
      3m 56s
    3. Viewing changes with diff
      3m 35s
    4. Viewing only staged changes
      2m 28s
    5. Deleting files
      5m 29s
    6. Moving and renaming files
      4m 25s
  7. 19m 18s
    1. Introducing the Explore California web site
      2m 2s
    2. Initializing Git
      3m 48s
    3. Editing the support phone number
      6m 20s
    4. Editing the backpack file name and links
      7m 8s
  8. 38m 45s
    1. Undoing working directory changes
      3m 49s
    2. Unstaging files
      2m 37s
    3. Amending commits
      4m 50s
    4. Retrieving old versions
      4m 7s
    5. Reverting a commit
      3m 12s
    6. Using reset to undo commits
      3m 44s
    7. Demonstrating a soft reset
      4m 8s
    8. Demonstrating a mixed reset
      4m 7s
    9. Demonstrating a hard reset
      5m 8s
    10. Removing untracked files
      3m 3s
  9. 27m 22s
    1. Using .gitignore files
      8m 23s
    2. Understanding what to ignore
      4m 47s
    3. Ignoring files globally
      4m 49s
    4. Ignoring tracked files
      5m 26s
    5. Tracking empty directories
      3m 57s
  10. 26m 51s
    1. Referencing commits
      4m 52s
    2. Exploring tree listings
      3m 46s
    3. Getting more from the commit log
      7m 38s
    4. Viewing commits
      4m 4s
    5. Comparing commits
      6m 31s
  11. 39m 35s
    1. Branching overview
      4m 56s
    2. Viewing and creating branches
      2m 57s
    3. Switching branches
      2m 58s
    4. Creating and switching branches
      4m 53s
    5. Switching branches with uncommitted changes
      3m 26s
    6. Comparing branches
      4m 28s
    7. Renaming branches
      2m 28s
    8. Deleting branches
      4m 18s
    9. Configuring the command prompt to show the branch
      9m 11s
  12. 28m 32s
    1. Merging code
      3m 11s
    2. Using fast-forward merge vs. true merge
      6m 49s
    3. Merging conflicts
      7m 26s
    4. Resolving merge conflicts
      7m 5s
    5. Exploring strategies to reduce merge conflicts
      4m 1s
  13. 14m 34s
    1. Saving changes in the stash
      4m 5s
    2. Viewing stashed changes
      2m 39s
    3. Retrieving stashed changes
      4m 24s
    4. Deleting stashed changes
      3m 26s
  14. 1h 5m
    1. Using local and remote repositories
      6m 38s
    2. Setting up a GitHub account
      5m 39s
    3. Adding a remote repository
      4m 0s
    4. Creating a remote branch
      4m 3s
    5. Cloning a remote repository
      4m 26s
    6. Tracking remote branches
      4m 5s
    7. Pushing changes to a remote repository
      5m 8s
    8. Fetching changes from a remote repository
      5m 47s
    9. Merging in fetched changes
      4m 50s
    10. Checking out remote branches
      3m 22s
    11. Pushing to an updated remote branch
      2m 6s
    12. Deleting a remote branch
      3m 8s
    13. Enabling collaboration
      3m 40s
    14. A collaboration workflow
      8m 43s
  15. 16m 23s
    1. Setting up aliases for common commands
      5m 14s
    2. Using SSH keys for remote login
      2m 56s
    3. Exploring integrated development environments
      1m 4s
    4. Exploring graphical user interfaces
      4m 32s
    5. Understanding Git hosting
      2m 37s
  16. 55s
    1. Goodbye
      55s

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