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Chang-Woo Rhee · Jul 30, 2026

Pane Navigation• Ctrl-b o — next pane • Ctrl-b q + number — jump to pane • Ctrl-b ; — last active pane • Ctrl-b ↑/↓/←...

#vim #tmux #terminal #shortcuts

Chang-Woo Rhee · Jul 29, 2026

Opening Apps from TerminalUse the open -a command followed by the app name: open -a VLC open -a "Google Chrome" open...

#macos #tips #terminal

Chang-Woo Rhee · Jul 14, 2026

ProblemLinux servers can become unresponsive when the disk fills up. The OS cannot write logs, swap, or temporary fil...

#devops, #linux, #docker, #ec2, #disk-management

Chang-Woo Rhee · Jul 06, 2026

OverviewAll approaches solve the same problem: show content to users and make it interactive. The difference is where...

Chang-Woo Rhee · Jun 17, 2026

• Batteries-included = most things built-in (ORM, mailer, jobs, asset pipeline, testing). Rails, Django, Laravel. • F...

#software

Chang-Woo Rhee · Dec 18, 2025

> why i get ramdom payment_no when i use max(payment_create)? > You get random payment_no because of how GROUP BY ...

#sql #greatest-n-per-group #database-design-pattern

Chang-Woo Rhee

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