Resources & Checklists

# EVERYDAY COMMANDS
git status                           # see what's changed
git log --oneline -10                # last 10 commits, compact
git diff HEAD                        # unstaged changes
git stash push -m "wip: feature X"  # save work temporarily

# BRANCHING
git checkout -b feature/my-feature  # create + switch branch
git branch -d feature/my-feature    # delete local branch
git push origin --delete feature/x  # delete remote branch

# MERGING & REBASING
git merge --no-ff feature/x         # merge with commit (preserves history)
git rebase main                      # replay commits on top of main
git rebase -i HEAD~3                 # squash last 3 commits interactively

# UNDOING
git reset HEAD~1 --soft             # undo last commit, keep changes staged
git reset HEAD~1 --mixed            # undo last commit, keep changes unstaged
git revert <commit-hash>            # create new commit that undoes a commit (safe)
git restore src/file.js             # discard changes in a file

# FINDING THINGS
git log --all --grep="bug fix"       # search commit messages
git blame src/utils.js              # who changed each line and when
git bisect start                    # binary search for bug-introducing commit

# BUILD & RUN
docker build -t myapp:1.0 .           # build image from Dockerfile
docker run -d -p 3000:3000 myapp:1.0  # run detached, map port
docker run --rm -it myapp bash        # interactive shell, auto-remove

# INSPECT
docker ps                              # running containers
docker ps -a                           # all containers including stopped
docker logs -f my-container           # stream logs
docker exec -it my-container sh       # shell into running container
docker inspect my-container          # detailed container info (JSON)
docker stats                          # live CPU/memory usage

# DOCKER COMPOSE
docker compose up -d                  # start all services detached
docker compose up -d --build          # rebuild and start
docker compose down -v               # stop and remove volumes
docker compose logs -f backend       # stream logs for one service

# CLEANUP
docker system prune -af              # remove ALL unused images/containers
docker volume prune                   # remove unused volumes
docker images | grep none            # find dangling images