➕ Add metadata entry for list-ports.ts script in script-meta-v2.json and introduce new single script file list-ports.ts

script-meta-v2.json

@@ -223,6 +223,15 @@
     "publish_time": 1737272626141,
     "update_time": 1750472965160
   },
+  "list-ports.ts": {
+    "script_name": "list-ports.ts",
+    "script_length": 2072,
+    "script_sha256": "2033072a42dd8b05576eaac9f41fa97deff5010726861ac217a1c74478a7ae6e",
+    "script_full_url": "https://git.hatter.ink/hatter/ts-scripts/raw/branch/main/single-scripts/list-ports.ts",
+    "single_script_file": true,
+    "publish_time": 1776516833640,
+    "update_time": 1776516833640
+  },
   "lower.ts": {
     "script_name": "lower.ts",
     "script_length": 390,

single-scripts/list-ports.ts

@@ -0,0 +1,70 @@
+#!/usr/bin/env -S deno run --allow-all
+
+const ttyProc = await Deno.run({
+  cmd: ["tput", "cols"],
+  stdout: "piped",
+  stderr: "piped",
+});
+const ttyOutput = new TextDecoder().decode(await ttyProc.output()).trim();
+const terminalWidth = parseInt(ttyOutput) || 120;
+
+const netstatProc = await Deno.run({
+  cmd: ["netstat", "-an"],
+  stdout: "piped",
+  stderr: "piped",
+});
+
+const output = await netstatProc.output();
+const decoded = new TextDecoder().decode(output);
+const lines = decoded.split("\n");
+
+const localWidth = 20;
+
+console.log("Active Internet connections (only servers)");
+console.log(`Proto Recv-Q Send-Q Local Address${" ".repeat(localWidth - 13)}Foreign Address         State       PID/Program name`);
+
+const listeningLines = lines.filter((line) => line.includes("LISTEN"));
+
+const seen = new Set<string>();
+for (const line of listeningLines) {
+  const parts = line.trim().split(/\s+/);
+  if (parts.length < 5) continue;
+
+  const proto = parts[0];
+  const localAddr = parts[3];
+  const state = parts[4];
+
+  const key = `${proto}:${localAddr}`;
+  if (seen.has(key)) continue;
+  seen.add(key);
+
+  const port = localAddr.includes(".")
+    ? localAddr.split(".").pop()
+    : localAddr.split(":").pop();
+
+  const pidCmd = await Deno.run({
+    cmd: ["lsof", "-i", `:${port}`, "-t"],
+    stdout: "piped",
+    stderr: "piped",
+  });
+  const pidOutput = new TextDecoder().decode(await pidCmd.output()).trim();
+  let pidInfo = "-";
+  if (pidOutput) {
+    const pid = pidOutput.split("\n")[0];
+    const nameCmd = await Deno.run({
+      cmd: ["ps", "-p", pid, "-o", "args="],
+      stdout: "piped",
+      stderr: "piped",
+    });
+    const nameOutput = new TextDecoder().decode(await nameCmd.output()).trim();
+    pidInfo = nameOutput;
+  }
+
+  const displayState = state === "*.*" ? "LISTEN" : state;
+  const localFormatted = localAddr.padEnd(localWidth);
+  const recvQ = "0".padStart(3);
+  const sendQ = "0".padStart(6);
+  console.log(
+    `${proto.padEnd(8)} ${recvQ} ${sendQ} ${localFormatted} ${"0.0.0.0:*".padEnd(22)} ${displayState.padEnd(11)} ${pidInfo}`
+  );
+}