Frequently used Git commands
Git runs entirely on your workstation, and a copy of the entire repository is also on your local hard drive. GitHub, BitBucket, and other providers only give you a storage space to allow you to share your repository with others and provide a web user interface to manage it. You can use any provider’s application on your workstation to manage any of your Git repositories. Many developers use SourceTree, the great application written by Atlassian, the owner of BitBucket, to manage Git repositories on their workstations that are shared at GitHub.
Here are the most frequently used Git commands.
Create the local repository
Initialize a new Git repository in the current directory. This command creates the .git sub-directory to store your repository and its configuration file.
Display the local repository status
Display the list of added, deleted and modified files in the local repository
Display your changes in the files
Display the changes in files since the last git add
Display the changes in the local stage area after you have executed git add
git diff --staged
Stage your changes in the local repository
Add your changes to the local stage area
git add .
Save the changes to the local repository
Commit your changes from the local stage area to the local repository with a message
git commit -m "My message"
Edit the last commit message
You can edit the last commit message even after the push.
git commit --amend
When you execute git status you get the message
Your branch and ‘origin/master’ have diverged,
and have 1 and 1 different commits each, respectively.
(use “git pull” to merge the remote branch into yours)
nothing to commit, working tree clean
To synchronize your local repository with the remote server, execute
The merge window pops up. You can leave the default message, or type your explanation. To save your message and close the window
- Press the ESC key on your keyboard
- Press the keys (including the colon at the beginning) :wq
Send your changes to the remote repository
Push the changes to the remote repository at GitHub, Bitbucket, or others
Get the latest from the remote repository
Pull the latest changes from the remote repository
Push an existing repository from the command line
git remote add origin https://github.com/ORGANIZATION/REPOSITORY_NAME.git git push -u origin master
- Great article on a branching strategy that can serve small projects and large teams: A successful Git branching model
Forks and Pull Requests
- Simple forking tutorial at https://help.github.com/articles/fork-a-repo/
- A detailed explanation of the recommended steps to fork an existing project: GitHub Standard Fork & Pull Request Workflow
- A Pull Request Tutorial is at https://yangsu.github.io/pull-request-tutorial/
View an old version of the repository
To view the repository in the state of an old commit and return back to the current state use the “checkout” command
Save the state of the working directory
Temporarily save the current state of the working directory including untracked (new) and ignored files
git stash -a
List the commits of the repository
View the old version of the repository
git checkout MY_OLD_COMMIT_SHA
Create a new branch and continue the work
If you realize, this is the last stable version of the application, create a new branch and develop your project from this point forward. This way you will not lose changes you made after this commit, but you will be able to create new commits based on the working version and merge the new branch back to the “master” branch later.
git checkout -b MY_APP_WORKS_AGAIN_BRANCH
Restore the state of the working directory before the “stash” command
git stash pop
If you want to restore the repository to the state before the “git stash” with the “git stash pop” command and you have created new files, to prevent the accidental deletion of those files, Git will display the error message:
MyPath/File already exists, no checkout
Could not restore untracked files from stash
You also get his message when an ignored file has been created, like the “.DS_Store” file on Mac OS.
Remove ignored files
To remove the ignored files from the work tree execute the following. Please note the upper case “X”.
Dry run to see what will be deleted:
git clean -n -f -X
Delete the files:
git clean -f -X
Remove ignored and untracked files
To remove the ignored files, and new (untracked) files and directories from the working tree, clean the repository with the following. Please note the lower case “x”.
Dry run to see what will be deleted:
git clean -n -f -d -x
Delete the files:
git clean -f -d -x
If you have accidentally committed a change and want to roll back the changes you can use the “reset” command. It is very dangerous because it can rewrite history, remove commits, delete files in your working directory, so you can lose your work. The “–mixed” is the default option of the “reset” command, so if no option is specified, that will be executed.
If the change has NOT been pushed to the remote repository (GitHub)
Remove a file from the stage
The “add” command adds files to the “stage”. If you have “add”-ed multiple files and do not want to “commit” one of them together with the rest, remove a file from the “stage”, but keep it in your working directory.
git reset FILE_TO_COMMIT_LATER
Remove the last commit
Move the history back before the last “commit” and all “add”s that are associated with it. You will not lose any changes in your working directory. Use this command if you realize you want to make more changes before the next commit.
git reset HEAD~1
Remove the last commit and lose all changes since that
Restore the files in the repository to the state of the prior “commit”. You will lose all changes you made since that. This command moves the HEAD back one commit, so it deletes the last commit from the history.
git reset --hard HEAD~1
Undo the rollback
If the reset was unnecessary you can undo it for a limited time. Git runs the garbage collector every 30 days, and it removes orphaned commits, so you have 0 to 30 days to undo the rollback. If the garbage collector runs a few minutes after the reset, the changes are lost forever.
To see the list of commit SHAs that the garbage collector not yet deleted
To undo the reset of a commit while it is still available
git checkout -b aNewBranchName shaYouDestroyed
If the changes have already been pushed to the remote repository
The “reset” command can cause serious problems for others working in the same repository. Use the “revert” command to correct mistakes. The “revert” command will create a new commit with the state you want without rewriting the history of the repository.
git revert <bad-commit-sha1-id> git push origin
Remove a file form the entire history of the repository
If a file is too big to be uploaded to the remote repository, you may get the error message when you push the repository to the remote:
remote: Resolving deltas: 100%, done.
remote: error: GH001: Large files detected. You may want to try Git Large File Storage – https://git-lfs.github.com.
remote: error: Trace: …
remote: error: See http://git.io/iEPt8g for more information.
remote: error: File … is … MB; this exceeds GitHub’s file size limit of 100.00 MB
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to ‘https://github.com/….git’
You may also want to remove every trace of a file from the history for security reasons.
This command rewrites the history of the repository and removes every trace of a file
git filter-branch -f --index-filter 'git rm --cached --ignore-unmatch "MY_TOO_BIG_FILE_NAME"'