Quick Reference Cheatsheets 📋

Tất cả shortcuts và commands quan trọng nhất ở một nơi.

VS Code Shortcuts

Shortcut	Action	Use Case
`Ctrl + P`	Quick Open	Open files instantly
`Ctrl + Shift + P`	Command Palette	Access all commands
`F12`	Go to Definition	Jump to source
`Alt + Left/Right`	Navigate Back/Forward	Return to previous location
`Ctrl + G`	Go to Line	Jump to specific line
`Ctrl + Shift + O`	Go to Symbol	Navigate within file

Editing

Shortcut	Action	Use Case
`Ctrl + D`	Select Next Occurrence	Multi-cursor editing
`Alt + Click`	Add Cursor	Manual multi-cursor
`Ctrl + Shift + L`	Select All Occurrences	Rename all instances
`Alt + Up/Down`	Move Line	Reorder code
`Shift + Alt + Down`	Duplicate Line	Copy similar code
`Ctrl + /`	Toggle Comment	Comment/uncomment
`Ctrl + Shift + K`	Delete Line	Remove line quickly

View Management

Shortcut	Action	Use Case
`Ctrl + B`	Toggle Sidebar	More screen space
`Ctrl + \`	Split Editor	View 2 files
`Ctrl + 1/2/3`	Focus Editor Group	Switch between splits
`Ctrl + W`	Close Editor	Close current file
`Ctrl + K, Z`	Zen Mode	Distraction-free coding
`Ctrl +` `	Toggle Terminal	Quick terminal access

Search & Replace

Shortcut	Action	Use Case
`Ctrl + F`	Find	Search in file
`Ctrl + H`	Replace	Find and replace
`Ctrl + Shift + F`	Find in Files	Search entire project
`Ctrl + Shift + H`	Replace in Files	Replace across project
`F3` / `Shift + F3`	Find Next/Previous	Navigate search results

Code Folding

Shortcut	Action	Use Case
`Ctrl + Shift + [`	Fold Region	Collapse code block
`Ctrl + Shift + ]`	Unfold Region	Expand code block
`Ctrl + K, Ctrl + 0`	Fold All	Collapse everything
`Ctrl + K, Ctrl + J`	Unfold All	Expand everything

Git Commands

Basic Workflow

bash

# Check status
git status

# Stage changes
git add .                    # Stage all
git add file.txt             # Stage specific file

# Commit
git commit -m "message"      # Commit with message
git commit --amend           # Amend last commit

# Push/Pull
git push                     # Push to remote
git pull                     # Pull from remote
git fetch                    # Fetch without merge

Branching

bash

# Create branch
git branch feature-name      # Create branch
git checkout -b feature-name # Create and switch

# Switch branch
git checkout main            # Switch to main
git switch feature-name      # Modern syntax

# Merge
git merge feature-name       # Merge into current branch

# Delete branch
git branch -d feature-name   # Delete local branch
git push origin --delete feature-name  # Delete remote

History & Inspection

bash

# View history
git log                      # Full history
git log --oneline            # Compact view
git log --graph --all        # Visual graph

# View changes
git diff                     # Unstaged changes
git diff --staged            # Staged changes
git diff branch1..branch2    # Compare branches

# Show commit
git show <commit-hash>       # Show commit details

Undo Changes

bash

# Discard changes
git checkout -- file.txt     # Discard file changes
git restore file.txt         # Modern syntax

# Unstage
git reset HEAD file.txt      # Unstage file
git restore --staged file.txt # Modern syntax

# Undo commit
git reset --soft HEAD~1      # Keep changes staged
git reset --hard HEAD~1      # Discard changes (dangerous!)
git revert <commit-hash>     # Create new commit that undoes

Stash

bash

# Save work temporarily
git stash                    # Stash changes
git stash save "message"     # Stash with message
git stash list               # List stashes
git stash pop                # Apply and remove stash
git stash apply              # Apply without removing
git stash drop               # Delete stash

Terminal Commands

bash

# Change directory
cd /path/to/dir              # Absolute path
cd ..                        # Parent directory
cd ~                         # Home directory
cd -                         # Previous directory

# List files
ls                           # List files
ls -la                       # List all with details
ls -lh                       # Human-readable sizes

# Current directory
pwd                          # Print working directory

File Operations

bash

# Create
touch file.txt               # Create empty file
mkdir dirname                # Create directory
mkdir -p path/to/dir         # Create nested directories

# Copy/Move/Delete
cp source dest               # Copy file
cp -r source dest            # Copy directory
mv source dest               # Move/rename
rm file.txt                  # Delete file
rm -rf dirname               # Delete directory (careful!)

# View files
cat file.txt                 # Print entire file
less file.txt                # View with pagination
head -n 10 file.txt          # First 10 lines
tail -n 10 file.txt          # Last 10 lines
tail -f file.txt             # Follow file (live updates)

Search

bash

# Find files
find . -name "*.js"          # Find by name
find . -type f -mtime -7     # Modified in last 7 days
fd "\.js$"                   # Modern alternative (faster)

# Search content
grep "pattern" file.txt      # Search in file
grep -r "pattern" .          # Recursive search
grep -i "pattern" file.txt   # Case insensitive
rg "pattern"                 # Modern alternative (faster)

Process Management

bash

# View processes
ps aux                       # All processes
ps aux | grep node           # Find specific process
top                          # Interactive process viewer
htop                         # Better top (if installed)

# Kill process
kill <PID>                   # Graceful kill
kill -9 <PID>                # Force kill
pkill node                   # Kill by name

Network

bash

# Check connectivity
ping google.com              # Test connection
curl https://api.example.com # Make HTTP request
wget https://example.com/file.zip # Download file

# Port usage
netstat -tuln                # List listening ports
lsof -i :3000                # What's using port 3000

Permissions

bash

# Change permissions
chmod +x script.sh           # Make executable
chmod 644 file.txt           # rw-r--r--
chmod 755 script.sh          # rwxr-xr-x

# Change owner
chown user:group file.txt    # Change owner and group
chown -R user:group dir/     # Recursive

Node.js / npm Commands

Package Management

bash

# Initialize project
npm init                     # Interactive setup
npm init -y                  # Skip questions

# Install packages
npm install                  # Install from package.json
npm install package-name     # Install package
npm install -D package-name  # Install as dev dependency
npm install -g package-name  # Install globally

# Update packages
npm update                   # Update all packages
npm update package-name      # Update specific package
npm outdated                 # Check for updates

# Remove packages
npm uninstall package-name   # Remove package
npm prune                    # Remove unused packages

Scripts

bash

# Run scripts
npm start                    # Run start script
npm test                     # Run tests
npm run build                # Run build script
npm run dev                  # Run dev script (custom)

# List scripts
npm run                      # List all available scripts

Troubleshooting

bash

# Clear cache
npm cache clean --force      # Clear npm cache

# Reinstall
rm -rf node_modules package-lock.json
npm install                  # Fresh install

# Check versions
node -v                      # Node version
npm -v                       # npm version

Docker Commands

Container Management

bash

# Run container
docker run image-name        # Run container
docker run -d image-name     # Run in background
docker run -p 8080:80 image  # Port mapping
docker run -v /host:/container image # Volume mount

# List containers
docker ps                    # Running containers
docker ps -a                 # All containers

# Stop/Start
docker stop container-id     # Stop container
docker start container-id    # Start container
docker restart container-id  # Restart container

# Remove
docker rm container-id       # Remove container
docker rm -f container-id    # Force remove

Image Management

bash

# List images
docker images                # List all images

# Build image
docker build -t name:tag .   # Build from Dockerfile

# Pull/Push
docker pull image-name       # Download image
docker push image-name       # Upload image

# Remove
docker rmi image-id          # Remove image
docker image prune           # Remove unused images

Cleanup

bash

# Remove all stopped containers
docker container prune

# Remove all unused images
docker image prune -a

# Remove all unused volumes
docker volume prune

# Remove everything
docker system prune -a

Keyboard Shortcuts by Platform

Windows/Linux

Action	Shortcut
Copy	`Ctrl + C`
Paste	`Ctrl + V`
Cut	`Ctrl + X`
Undo	`Ctrl + Z`
Redo	`Ctrl + Y`
Select All	`Ctrl + A`
Save	`Ctrl + S`
Find	`Ctrl + F`

macOS

Action	Shortcut
Copy	`Cmd + C`
Paste	`Cmd + V`
Cut	`Cmd + X`
Undo	`Cmd + Z`
Redo	`Cmd + Shift + Z`
Select All	`Cmd + A`
Save	`Cmd + S`
Find	`Cmd + F`

Regular Expressions Quick Reference

Basic Patterns

Pattern	Matches	Example
`.`	Any character	`a.c` matches "abc", "a1c"
`\d`	Digit (0-9)	`\d{3}` matches "123"
`\w`	Word character	`\w+` matches "hello"
`\s`	Whitespace	`\s+` matches spaces
`^`	Start of string	`^Hello` matches "Hello world"
`$`	End of string	`world$` matches "Hello world"

Quantifiers

Pattern	Meaning	Example
`*`	0 or more	`a*` matches "", "a", "aa"
`+`	1 or more	`a+` matches "a", "aa"
`?`	0 or 1	`a?` matches "", "a"
`{n}`	Exactly n	`a{3}` matches "aaa"
`{n,}`	n or more	`a{2,}` matches "aa", "aaa"
`{n,m}`	Between n and m	`a{2,4}` matches "aa", "aaa", "aaaa"

Common Patterns

regex

# Email
^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$

# URL
^https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b

# Phone (US)
^\(?([0-9]{3})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$

# Date (YYYY-MM-DD)
^\d{4}-\d{2}-\d{2}$

# Hex Color
^#?([a-fA-F0-9]{6}|[a-fA-F0-9]{3})$

HTTP Status Codes

Success (2xx)

Code	Meaning
200	OK - Request succeeded
201	Created - Resource created
204	No Content - Success, no response body

Redirection (3xx)

Code	Meaning
301	Moved Permanently
302	Found (Temporary Redirect)
304	Not Modified (Cached)

Client Errors (4xx)

Code	Meaning
400	Bad Request - Invalid syntax
401	Unauthorized - Authentication required
403	Forbidden - No permission
404	Not Found - Resource doesn't exist
422	Unprocessable Entity - Validation failed
429	Too Many Requests - Rate limited

Server Errors (5xx)

Code	Meaning
500	Internal Server Error
502	Bad Gateway - Invalid response from upstream
503	Service Unavailable - Server overloaded
504	Gateway Timeout - Upstream timeout

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💪 Thực hành với Cheatsheets

Quick Reference Cheatsheets 📋 ​

VS Code Shortcuts ​

Navigation ​

Editing ​

View Management ​

Search & Replace ​

Code Folding ​

Git Commands ​

Basic Workflow ​

Branching ​

History & Inspection ​

Undo Changes ​

Stash ​

Terminal Commands ​

Navigation ​

File Operations ​

Search ​

Process Management ​

Network ​

Permissions ​

Node.js / npm Commands ​

Package Management ​

Scripts ​

Troubleshooting ​

Docker Commands ​

Container Management ​

Image Management ​

Cleanup ​

Keyboard Shortcuts by Platform ​

Windows/Linux ​

macOS ​

Regular Expressions Quick Reference ​

Basic Patterns ​

Quantifiers ​

Common Patterns ​

HTTP Status Codes ​

Success (2xx) ​

Redirection (3xx) ​

Client Errors (4xx) ​

Server Errors (5xx) ​

🎯 Luyện tập ngay ​

Quick Reference Cheatsheets 📋

VS Code Shortcuts

Navigation

Editing

View Management

Search & Replace

Code Folding

Git Commands

Basic Workflow

Branching

History & Inspection

Undo Changes

Stash

Terminal Commands

Navigation

File Operations

Search

Process Management

Network

Permissions

Node.js / npm Commands

Package Management

Scripts

Troubleshooting

Docker Commands

Container Management

Image Management

Cleanup

Keyboard Shortcuts by Platform

Windows/Linux

macOS

Regular Expressions Quick Reference

Basic Patterns

Quantifiers

Common Patterns

HTTP Status Codes

Success (2xx)

Redirection (3xx)

Client Errors (4xx)

Server Errors (5xx)

🎯 Luyện tập ngay