erdivartanovich https://erdivartanovich.github.io/ 2026-07-29T00:00:00Z Erdiansyah Building this site: pandoc, make, and nothing else https://erdivartanovich.github.io/articles/building-this-site.html 2026-07-29T00:00:00Z How this site is built with pandoc, make, and a 30-line shell script — no framework required. Most shell scripts don't need if https://erdivartanovich.github.io/articles/bash-without-if.html 2026-07-18T00:00:00Z Guard clauses with && and || make shell scripts flatter and more readable than nested if blocks. git diff answers three different questions https://erdivartanovich.github.io/articles/git-diff-three-questions.html 2026-07-16T00:00:00Z git diff always compares two of three snapshots — working tree, staging, HEAD. Know which question you're asking. When cat isn't cat: an alias that corrupts your files https://erdivartanovich.github.io/articles/when-cat-is-not-cat.html 2026-07-15T00:00:00Z How an innocent cat alias silently corrupted config files with ANSI color codes — and the two lessons it taught. Shell heredocs: one mental model, four tools https://erdivartanovich.github.io/articles/heredocs-mental-model.html 2026-07-14T00:00:00Z One mental model for shell heredocs: quoted vs unquoted delimiters, writing files with no command, and running whole blocks over ssh.