Git and GitHub Part -2

How can you check your current git version?

• git --v

• git --version

• git --option

• git --current

Answer explanation

To check your current git version, use the command 'git --version'. This command will display the installed version of git on your system. It is important to note that 'git --v', 'git --option', and 'git --current' are not valid commands to check the git version. Therefore, the correct choice is 'git --version'.

What command lets you create a connection between a local and remote repository?

• git remote add new

• git remote add origin

• git remote new origin

• git remote origin

Answer explanation

To create a connection between a local and remote repository, you can use the 'git remote add origin' command. This command sets up a link between your local repository and a remote repository, allowing you to push and pull changes. It is important to choose the correct option, 'git remote add origin', as it specifies the remote repository's name as 'origin'. This explanation highlights the correct choice without mentioning the option number and refers to the query as a question.

Describe what these Git commands do to the commit history: git reset --hard HEAD~5 git merge --squash HEAD@{1}

• They reset the HEAD to the fifth commit in the repo, then merge to the master branch.

• The current branch's HEAD is reset back five commits, then prior commits are squashed into a single commit.

• They delete the last five commits.

• They merge the last five commits into a new branch.

Answer explanation

The given question asks to describe the effects of two Git commands on the commit history. The first command 'git reset --hard HEAD~5' resets the current branch's HEAD back five commits, discarding any changes made after those commits. The second command 'git merge --squash HEAD@{1}' merges the changes from the previous branch into the current branch as a single commit. Therefore, the correct answer is that the current branch's HEAD is reset back five commits, and the prior commits are squashed into a single commit.

Your current project has several branches; master, beta, and push-notifications. You've just finished the notification feature in the push-notification branch, and you want to commit it to beta branch. How can you accomplish this?

• Checkout the push-notifications branch and run git merge beta

• Checkout the master branch and run git merge beta -> push-notifications

• Delete the push-notifications branch and it will be committed to the master branch automatically

• Checkout the beta branch and run git merge push-notifications

Answer explanation

To commit the notification feature from the push-notifications branch to the beta branch, you need to checkout the beta branch and run 'git merge push-notifications'. This will merge the changes from the push-notifications branch into the beta branch. Make sure to select the correct option that mentions checking out the beta branch and merging with push-notifications.

Which of the following is true when you use the following command? git add -A

• All new and updated files are staged

• Files are staged in alphabetical order.

• All new files are staged

• Only updated files are staged

Answer explanation

When you use the command 'git add -A', all new and updated files are staged. This means that any files that have been modified or created will be included in the staging area. The files are not staged in alphabetical order, and it does not matter whether the files are new or updated. The command 'git add -A' stages all new and updated files, regardless of their order or type.

What will the following command print to the Terminal? git remote -v

• A list of remote repositories and their URLs

• The current git version you're running

• An inline editor for modifying remote repositories

• The last 5 git versions you've installed

Answer explanation

The command 'git remote -v' will print a list of remote repositories and their URLs to the Terminal. This command is used to view the remote repositories associated with the current git repository. It is helpful to check the URLs of the remote repositories to ensure that the correct repositories are being accessed and updated during collaboration or synchronization with other developers.

Looking at the following commands, describe what is happening. git checkout feature-user-location git cherry-pick kj2342134sdf090093f0sdgasdf99sdfo992mmmf9921231

• The commit is being tagged for release on the feature-user-location branch

• A commit is being copied from its original branch over to the feature-user-location branch

• The commit is being cherry-picked as the new HEAD of the commit history

• A commit is being copied from the feature-user-location branch to the master branch

• The branch is switched to the feature-user-location branch, and the specified commit is applied to the branch

Answer explanation

The given question is asking to describe what is happening with the provided Git commands. The correct choice is 'A commit is being copied from its original branch over to the feature-user-location branch.' This means that a specific commit is being copied from its original branch to the feature-user-location branch. The explanation highlights this choice without mentioning the option number. It also ensures that the explanation doesn't exceed 75 words and replaces 'query' with 'question'.

What does the following command do to the git repository? git reset --soft HEAD^

• It deletes all previous commits and resets the repository history back to its initial state.

• It resets the working branch to the first commit.

• It keeps the HEAD at the current commit but clears all previous commits.

• It sets HEAD to the previous commit and leaves changes from the undone commit in the stage/index.

Answer explanation

The command 'git reset --soft HEAD^' sets the HEAD to the previous commit and leaves changes from the undone commit in the stage/index. This means that the changes made in the undone commit will still be available for further modifications. It does not delete previous commits or reset the repository history. It also does not reset the working branch to the first commit. The command is useful when you want to undo the last commit but keep the changes for future use.

You find a bug in your project, but can't locate where it was introduced in the commit history. How would you diagnose this problem?

• Manually backtrack through your commit history.

• Use git search -diff to compare all commits in your repository history.

• Run a git rebase to find the buggy commit.

• Use git bisect to compare the buggy commit to an early commit that works as expected.

Answer explanation

To diagnose the bug in your project, you can use git bisect. This command allows you to compare the buggy commit with an earlier commit that works correctly. By systematically narrowing down the range of commits, you can pinpoint the introduction of the bug. This method is efficient and helps you identify the exact commit responsible for the issue without manually backtracking through the entire commit history.

Why would the following command be used? git rebase -i HEAD~10

• To run a comparative search of the last 10 commits for differences

• To list the last 10 commits and modify them with either the squash or fixup command

• To delete the last 10 commits and reset the HEAD

• In order to locally cache the last 10 commits

Answer explanation

The command 'git rebase -i HEAD~10' is used to list the last 10 commits and modify them using either the squash or fixup command. It allows you to interactively rebase your branch and combine multiple commits into one or modify their content. This command is useful when you want to clean up your commit history or make changes to previous commits before pushing them to a remote repository.