Reverts all changes (from the last commit)

git checkout -- .

Reverts

some.txt

file changes from the last commit (to discard changes in working directory)

git checkout -- some.txt

HEAD will be detached and pointed towards the commit (to go back to master

git checkout master

should be run)

git checkout b4ba3088679ff70b45df2aefc7c0a13d41a2bd76

Reverts all changes (from the specified commit)

git checkout b4ba3088679ff70b45df2aefc7c0a13d41a2bd76 .

Reverts

some.txt

file changes (from the specified commit)

git checkout b4ba3088679ff70b45df2aefc7c0a13d41a2bd76 some.txt

To switch to an existing branch

git checkout another_branch

To switch to a new branch

git checkout -b new_branch

Saves staged changes to local repository with message

git commit -m 'Initial commit'

Adds all the modified and deleted files to staging area and then saves changes to local repository with message

git commit -a -m 'Initial commit'  /  git commit -am 'Initial commit'

Makes changes to the last commit, adds some files or edits commit message

git commit --amend -m 'Initial commit'

Set username and email globally

git config --global user.name "John"
git config --global user.email "johndoe@gmail.com"

Check if we have set the Git username and email globally

git config --global user.name
git config --global user.email

Set username and email for a single repository

git config user.name "John"
git config user.email "johndoe@gmail.com"

Check if we have set the Git username and email locally (for a single repository)

git config user.name
git config user.email

To print the current working directory

pwd

also works on windows

Change directory

cd /Users/Brad/Desktop/Sites

Instead of typing the full path we can drag the folder on top of our command line

To see remote URLs

git remote -v

Add remote repository URL

$ git remote add origin https://github.com/tandilashvili/testproject.git

Setting remote repository URL

git remote set-url origin https://github.com/tandilashvili/testrepo.git

Pushes new commits to the same remote branch

git push

Download other developers commits from master branch to our local repository

git pull origin master

We get the error code (using DB unique constraint) when the resource is already created

try{
    $stmt = $conn->prepare($query);
    $stmt->execute($exec_arr);
} catch(PDOException $e) {
    if($e->getCode() == 23000){
        array_push($errors, 'Technology already exists');
    } else {
        array_push($errors, 'Database error');
    }
}

Download Git repository

git clone

Initialize local Git repository

git init

Add files to staging area

git add

Check status of working tree

git status

Save changes to local repository

git commit

Pull latest commits from remote repository

git pull

Push local commits to remote repository

git push