Open Source Developer Tools Complete Guide 2026

# Install VS Code
wget -qO- https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor > packages.microsoft.gpg
sudo install -o root -g root -m 644 packages.microsoft.gpg /usr/share/keyrings/
sudo sh -c 'echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/packages.microsoft.gpg] https://packages.microsoft.com/repos/vscode stable main" > /etc/apt/sources.list.d/vscode.list'
sudo apt update
sudo apt install code

-- init.lua (Neovim config)
require('packer').startup(function(use)
  use 'wbthomason/packer.nvim'
  
  -- Theme
  use 'folke/tokyonight.nvim'
  
  -- Fuzzy finder
  use 'nvim-telescope/telescope.nvim'
  
  -- Autocomplete
  use 'hrsh7th/nvim-cmp'
  use 'hrsh7th/cmp-nvim-lsp'
  
  -- LSP
  use 'neovim/nvim-lspconfig'
  use 'williamboman/mason.nvim'
  
  -- Treesitter
  use 'nvim-treesitter/nvim-treesitter'
end)

# Git aliases for productivity
git config --global alias.co checkout
git config --global alias.br branch
git config --global alias.st status
git config --global alias.cm commit
git config --global alias.df diff
git config --global alias.lg "log --oneline --graph --all"

# Interactive rebase
git rebase -i HEAD~5

# Cherry-pick commit
git cherry-pick <commit-hash>

# Stash with message
git stash push -m "Work in progress: feature X"

# Install GitHub CLI
brew install gh  # macOS
sudo apt install gh  # Linux

# Authentication
gh auth login

# Common commands
gh repo create my-project --public
gh issue create --title "Bug" --body "Description"
gh pr create --title "Feature" --body "Changes"
gh run watch  # Watch workflow runs

# Start debugging
gdb ./program

# Common commands
(gdb) break main          # Set breakpoint
(gdb) run                 # Start program
(gdb) next               # Next line
(gdb) step               # Step into function
(gdb) print var          # Print variable
(gdb) backtrace          # Show call stack
(gdb) continue           # Continue execution
(gdb) delete 1           # Delete breakpoint

# Trace system calls
strace -p <pid>

# Trace file access
strace -e trace=open,read,write <command>

# Timing information
strace -T <command>

# Summary of calls
strace -c <command>

# Multi-stage build example
FROM node:18-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

FROM nginx:alpine
COPY --from=builder /app/dist /usr/share/nginx/html
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]

version: '3.8'
services:
  app:
    build: .
    ports:
      - "3000:3000"
    environment:
      - DATABASE_URL=postgres://db:5432/app
    depends_on:
      - db
      - redis

  db:
    image: postgres:15
    volumes:
      - postgres_data:/var/lib/postgresql/data
    environment:
      - POSTGRES_PASSWORD=secret

  redis:
    image: redis:7-alpine

volumes:
  postgres_data:

# HTTPie - User-friendly cURL alternative
brew install httpie

# GET request
http GET api.example.com/users

# POST with JSON
http POST api.example.com/users name="John" email="[email protected]"

# Form data
http -f POST api.example.com/submit name="John" file@./data.txt

# Headers
http GET api.example.com/protected Authorization:"Bearer token"

Postman Collections:
├── Import/Export: JSON format
├── Environments: dev, staging, prod
├── Variables: {{base_url}}
├── Pre-request scripts
└── Tests with assertions

# tmux basics
tmux new -s mysession    # Create session
tmux ls                  # List sessions
tmux attach -t mysession # Attach to session

# In tmux:
Ctrl+b "    # Split horizontal
Ctrl+b %    # Split vertical
Ctrl+b arrow # Navigate panes
Ctrl+b c    # New window
Ctrl+b d    # Detach