🧰 Developer Tools

"A craftsman is only as good as their tools - and their mastery of them."

Maximize productivity with the right tooling and configuration.

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📝 Git Advanced

Essential Commands

# Interactive rebase - clean up history before PR
git rebase -i HEAD~5
# Commands: pick, reword, edit, squash, fixup, drop

# Cherry-pick specific commit
git cherry-pick abc123

# Find who changed a line
git blame -L 10,20 src/App.java

# Binary search for bug introduction
git bisect start
git bisect bad                 # Current commit is bad
git bisect good v1.0           # This version was good
# Git will binary search commits

# Stash with message
git stash push -m "WIP: feature implementation"
git stash list
git stash pop stash@{0}

# Undo mistakes
git reset --soft HEAD~1        # Undo commit, keep changes staged
git reset --mixed HEAD~1       # Undo commit, unstage changes
git reset --hard HEAD~1        # Undo commit, discard changes (dangerous!)
git reflog                     # Find lost commits

Git Flow vs Trunk-Based

Useful Aliases

# ~/.gitconfig
[alias]
    st = status -sb
    co = checkout
    br = branch
    ci = commit
    lg = log --oneline --graph --decorate -20
    undo = reset --soft HEAD~1
    amend = commit --amend --no-edit
    wip = !git add -A && git commit -m "WIP: work in progress"
    cleanup = !git branch --merged | grep -v main | xargs git branch -d

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💻 IntelliJ IDEA

Essential Shortcuts (Mac)

Action	Shortcut
Search Everywhere	⇧⇧ (Double Shift)
Find Action	⌘⇧A
Go to File	⌘⇧O
Go to Symbol	⌘⌥O
Recent Files	⌘E
Navigate to Class	⌘O
Rename	⇧F6
Extract Variable	⌘⌥V
Extract Method	⌘⌥M
Generate	⌘N
Quick Fix	⌥Enter
Find Usages	⌥F7
Go to Definition	⌘B
Go to Implementation	⌘⌥B
Show Parameters	⌘P
Quick Documentation	F1
Reformat Code	⌘⌥L
Optimize Imports	⌃⌥O

Must-Have Plugins

Plugin	Purpose
GitHub Copilot	AI code completion
SonarLint	Code quality analysis
Rainbow Brackets	Colorful bracket matching
Key Promoter X	Learn shortcuts faster
GitToolBox	Enhanced Git integration
String Manipulation	Text transformation tools
Indent Rainbow	Visual indentation

Live Templates

// Type: sout + Tab
System.out.println($END$);

// Type: psvm + Tab
public static void main(String[] args) {
    $END$
}

// Custom: Create your own in Settings > Editor > Live Templates
// log + Tab
private static final Logger log = LoggerFactory.getLogger($CLASS$.class);

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🖥️ Terminal & Shell

Zsh Configuration

# ~/.zshrc

# Oh My Zsh
export ZSH="$HOME/.oh-my-zsh"
ZSH_THEME="powerlevel10k/powerlevel10k"

plugins=(
    git
    zsh-autosuggestions
    zsh-syntax-highlighting
    docker
    kubectl
    fzf
)

source $ZSH/oh-my-zsh.sh

# Aliases
alias ll='ls -la'
alias ..='cd ..'
alias ...='cd ../..'
alias gs='git status -sb'
alias gco='git checkout'
alias gcm='git commit -m'
alias gp='git push'
alias gl='git pull'
alias k='kubectl'
alias d='docker'
alias dc='docker compose'

# Functions
mkcd() { mkdir -p "$1" && cd "$1"; }
port() { lsof -i :"$1"; }
killport() { lsof -ti :"$1" | xargs kill -9; }

Essential CLI Tools

Tool	Purpose	Install
fzf	Fuzzy finder	brew install fzf
ripgrep (rg)	Fast grep	brew install ripgrep
fd	Fast find	brew install fd
bat	Better cat	brew install bat
exa/eza	Better ls	brew install eza
jq	JSON processor	brew install jq
htop	Process viewer	brew install htop
tldr	Simplified man pages	brew install tldr
httpie	Better curl	brew install httpie
lazygit	Git TUI	brew install lazygit

Vim Essentials

# .vimrc or neovim config basics
set number          # Line numbers
set relativenumber  # Relative line numbers
set tabstop=4       # Tab width
set shiftwidth=4    # Indent width
set expandtab       # Spaces instead of tabs
set autoindent      # Auto-indent
set clipboard=unnamed  # Use system clipboard

# Essential motions
h j k l           # Left, Down, Up, Right
w b              # Word forward/backward
0 $              # Beginning/End of line
gg G             # Beginning/End of file
/pattern         # Search
n N              # Next/Previous match

# Essential commands
i a              # Insert mode (before/after cursor)
dd yy p          # Delete/Yank line, Paste
u ⌃r             # Undo/Redo
:w :q :wq        # Write/Quit/Write+Quit
:%s/old/new/g    # Replace all

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🐞 Debugging & Profiling

JVM Debugging

# Remote debugging
java -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5005 -jar app.jar

# Memory analysis
jmap -histo <pid>                    # Object histogram
jmap -dump:format=b,file=heap.hprof <pid>  # Heap dump

# Thread analysis
jstack <pid>                         # Thread dump
jcmd <pid> Thread.print              # Alternative

# Performance profiling
java -XX:+UnlockCommercialFeatures -XX:+FlightRecorder ...
jcmd <pid> JFR.start duration=60s filename=recording.jfr

Browser DevTools

Tab	Use For
Elements	DOM inspection, CSS debugging
Console	JS execution, logging
Network	API calls, performance
Performance	Runtime profiling
Application	Storage, cookies, cache
Lighthouse	Performance audit

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📝 Detailed Topics

• Git Rebase Strategies
• Docker for Development
• VS Code Setup
• Productivity Workflows
• API Testing (Postman, httpie)

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Productivity Tips

1. Learn keyboard shortcuts - Every mouse click costs time
2. Customize your environment - Invest time in .dotfiles
3. Automate repetitive tasks - Scripts save hours over time
4. Use version control for everything - Including dotfiles
5. Stay updated - Tools evolve, so should your workflow