How To Use Git with GitHub

Install Git Package on Ubuntu/Debian

sudo apt-get install git-core

Add a SSH Key

Run the following commands to add a SSH Key to your SSH-agent so you can use git without logging in again and again. It is important that you stand in your home directory

Generates a new set of SSH-keys both private and public, it will ask you to create a password.

cd .ssh && ssh-keygen -t rsa -b 4096 -C "your_email@example.com"

Add your private SSH-Key to your computers ssh-mannager (if ssh-add does not work, run eval `ssh-agent -s`

ssh-add

Add your public SSH-key to GitHub

cat id_rsa.pub

Now copy the latest output and go to GitHub to add the public SSH Key to your account

Source: https://help.github.com/articles/generating-ssh-keys/

Also you can copy the local public key to remote server using this command:

ssh-copy-id -i id_ed25519.pub user@hostname

Download repository from github

git clone git@github.com:Username/Repo.git

Add new files to the tracking list

git add filename.sh             // Adds everything to next push
git status            // shows changes you are about to commit
git commit -m "Some Comment"  // Prepare for push
git push            // You are sending all chosen changes to your repository

If you are ahead in branches use

git push origin master

Remove files from repository

git rm filemane         // Removes file from repo on next push
git status            // Shows changes you are about to commit
git commit -m "Removed some files"  // Prepare for push
git push            // you are sending all chosen changes to your repository

Download changes

git pull

View unpushed changes (compare your local HEAD with master remote)

git diff origin/master..HEAD

Branching

Create and start working on new branch

git checkout -b branchname

Deletion of Branch

git branch -d branchname

Merge branch into master branch

git checkout master
git merge branchname

To remove the last commit (Might be dangerous for others working on project)

git rebase -i HEAD~2
git push -f origin branchName

If you have commited and pushed file changes to remote and would like to revert the changes to this specifik file

git checkout HEAD~ -- path/to/file
git commit --amend -CHEAD
git push --force-with-lease origin <branchname>

If you would like to change the lastest commit message(given no one pulled the recent changes)

git commit --amend -m "New commit message"
git push --force origin <branchname>

Having trouble with keeping up with git? Try this

• http://pcottle.github.io/learnGitBranching/