add building a shell post

data/posts.ts

@@ -7,6 +7,7 @@ export const popularPosts = [
 
 // Starred posts (not in any specific order)
 export const postStars = [
+  "building-a-shell",
   "solving-nyt-pips-puzzle",
   "compiling-a-forth",
   "counting-words-at-simd-speed",

data/projects.ts

@@ -38,6 +38,12 @@ export default [
     desc: "A daily word-sliding puzzle game inspired by Wordle and Scrabble.",
     to: "/solving-queuedle",
   },
+  {
+    name: "andsh",
+    link: "https://github.com/healeycodes/andsh",
+    desc: "A tiny shell in C with pipes, cd, env var expansion, history, and tab completion.",
+    to: "/building-a-shell",
+  },
   {
     name: "llmfs",
     link: "https://github.com/healeycodes/llmfs",

pages/index.tsx

@@ -66,7 +66,7 @@ export default function Home({ allPostsData, description, words }) {
             I wrote <Link href="/maybe-the-fastest-disk-usage-program-on-macos">one of the fastest disk-usage programs on macOS</Link> by
             using macOS-specific system calls, and then
             made it faster by <Link href="/optimizing-my-disk-usage-program">reducing thread scheduling overhead and lock contention</Link>. I
-            also showed how to beat the performance of <code>grep</code> by just <Link href="/beating-grep-with-go">using goroutines</Link>. I like learning by building things from scratch; like <Link href="/a-fair-cancelable-semaphore-in-go">a fair, and cancelable semaphore in Go</Link>.
+            also showed how to beat the performance of <code>grep</code> by just <Link href="/beating-grep-with-go">using goroutines</Link>. I like learning by building things from scratch; like <Link href="/building-a-shell">a tiny shell</Link>, and <Link href="/a-fair-cancelable-semaphore-in-go">a fair, and cancelable semaphore in Go</Link>.
           </p>
           <p>
             My <Link href="/installing-npm-packages-very-quickly">experimental package manager</Link> uses simple concurrency patterns to be faster than every package manager aside from Bun (mine is 11% slower) when cold-installing from a lockfile.