Sanghun's Blog

Sanghun's Blog

Sign in Subscribe

Codex

I don't write code. Instead I tinker with a file called AGENTS.md. Instructions for an agent. When the agent makes a mistake, I add a line so it never makes that mistake again. That file is what Codex reads. The word codex comes from Latin caudex. A

Auto-copy Claude Code Resume Command to Clipboard on Session End

Auto-copy Claude Code Resume Command to Clipboard on Session End

Sometimes you need to exit and restart a Claude Code session. When you do, it prints a claude --resume {session_id} command to pick up where you left off. Dragging to copy it every time got old, so I automated it. Claude Code hooks can automate this. Setup Add a

SSH Backspace Not Working? It's a terminfo Problem

SSH Backspace Not Working? It's a terminfo Problem

You install a shiny new terminal app, everything works great locally, then you SSH into a remote server and suddenly Backspace stops working. Instead of deleting characters, it prints spaces. Here's why it happens and how to fix it with a single command. Symptoms * Everything works fine locally

How to Sync Claude Code Config Across Multiple Macs with Syncthing

How to Sync Claude Code Config Across Multiple Macs with Syncthing

I use a MacBook Pro and a Mac Mini side by side. Both run Claude Code, but custom skills, agents, and memory files created on one machine don't exist on the other. Manually copying them every time is not an option. I wanted to automatically sync the ~/.claude

Fixing zsh Tab Completion Case Sensitivity Over SSH on macOS

Fixing zsh Tab Completion Case Sensitivity Over SSH on macOS

On my MacBook, pressing cd d + Tab shows folders starting with both d and D. Case-insensitive, as expected. But when I SSH into my Mac mini, cd d + Tab only shows folders starting with lowercase d. Both machines use APFS (case-insensitive), yet tab completion behaves differently. Cause macOS's

[Powerlevel10k+Oh-My-Zsh] How to Fix Cursor Agent Terminal Output Truncation and Formatting Issues

[Powerlevel10k+Oh-My-Zsh] How to Fix Cursor Agent Terminal Output Truncation and Formatting Issues

[Powerlevel10k+Oh-My-Zsh] How to Fix Cursor Agent Terminal Output Truncation and Formatting Issues ⚠️ Must-read for Powerlevel10k/Powerlevel9k users! If you're using Powerlevel10k or Powerlevel9k themes, you're likely experiencing command completion detection issues when working with Cursor AI Assistant in terminal tasks. Cursor's official documentation

Running Uniswap Frontend Locally for Testnet Environment

Running Uniswap Frontend Locally for Testnet Environment

Using Uniswap in a testnet environment is simple. You can change the network of the connected wallet to a testnet or specify the chain in the query string. For example, if you want to use Uniswap on the Ethereum Sepolia testnet, you can use the following URL: https://app.uniswap.

Foundations of Project Management | Organizational structure and culture

Foundations of Project Management | Organizational structure and culture

Overview of Classic and Matrix structures Organizational structure defines how tasks are divided, coordinated, and how members of the organization relate to each other. It maps out who reports to whom and helps determine communication lines and frequency. Types of Organizational Structures: 1. Classic (Functional or Top-Down): * Follows a typical

Foundations of Project Management | The project management life cycle and methodologies

Foundations of Project Management | The project management life cycle and methodologies

Introduction: The project management life cycle and methodologies Recap and Next Steps: Previously Covered: * Project Management Definition: * What project management is and its value to businesses. * Differentiating what constitutes a project and what does not. * Role of a Project Manager: * The necessity and timing of having a project manager. * Day-to-day

Foundations of Project Management | Becoming an effective project manager

Foundations of Project Management | Becoming an effective project manager

The value of a project manager Introduction to Project Management: * Project management spans various industries and companies, from large corporations to small businesses. * Definition of a Project Manager: Shepherds projects from start to finish, guiding their team with organizational and interpersonal skills. Role and Value of a Project Manager: * Planning

Foundations of Project Management | Embarking on a career in project management

Foundations of Project Management | Embarking on a career in project management

Welcome to the Google Project Management Certificate Introduction to the Google Project Management Certificate: * Presenter: Emilio, Program Manager on the Responsible Innovation team at Google. * Welcome: Emilio introduces the Google Project Management Certificate Program and shares a personal journey into project management. * Exercise: Encourages viewers to reflect on tasks they’

[Intro to Hadoop and MapReduce] Lesson 5 MapReduce Code

[Intro to Hadoop and MapReduce] Lesson 5 MapReduce Code

1. Introduction 2. Quiz: Input Data How to find total sales/store? KEY VALUE * time store name * cost store name * store name cost * store name product type 3. Quiz: Defensive Mapper Code # Your task is to make sure that this mapper code does not fail on corrupt data lines, # but

[Intro to Hadoop and MapReduce] Lesson 4 Problem set

[Intro to Hadoop and MapReduce] Lesson 4 Problem set

1. Quiz: HDFS Which of the following is true? * HDFS uses a central SAN(storage area network) to hold its data * HDFS stores a single copy of all data * HDFS replicates all data for reliability * To store 100TB of data in a Hadoop cluster you would need 300TB of raw

[Intro to Hadoop and MapReduce] Lesson 3 HDFS and MapReduce

[Intro to Hadoop and MapReduce] Lesson 3 HDFS and MapReduce

1. Quiz: HDFS Is there a problem? > https://youtu.be/6F8-cCUbRU8 * Network failure * Disk failure on DN(datanode) * Not all DN used * Block sizes differ * Disk failure on NN(namenode) 2. Quiz: Data Redundancy Any problem now?(when NN failure) * Data inaccessible > when network failure on NN * Data

[Intro to Hadoop and MapReduce] Lesson 2 Problem set

[Intro to Hadoop and MapReduce] Lesson 2 Problem set

1. Quiz: Dimensions of Big Data Which of the following are Part of the 3 dimensions of Big Data? * Volume * Cost * Importance * Velocity * Source * Variety * Security * Virality 2. Quiz: Volume Volume of Big Data refers to: * Importance of Data * Size of data * Speed of data generation * The differnet data sources

[Intro to Hadoop and MapReduce] Lesson 1 Big data

[Intro to Hadoop and MapReduce] Lesson 1 Big data

1. Introduction You can read more about Big Data in Wikipedia which is also a company that generates and processes huge amounts of data itself. MapReduce and Apache Hadoop are the technologies we will be talking about more in this course. 2. Data Sources According to IBM: “Every day, 2.