fix: improve sf nodes ssh documentation and specification

src/lib/nodes/index.ts

@@ -71,13 +71,13 @@ $ sf nodes set my-node-name --max-price 12.50
 $ sf nodes extend my-node-name --duration 3600 --max-price 12.50
 
 \x1b[2m# SSH into a node's current VM\x1b[0m
-$ sf nodes ssh my-node-name
+$ sf nodes ssh root@my-node-name
 
 \x1b[2m# View logs from a node's current VM\x1b[0m
 $ sf nodes logs my-node-name
 
 \x1b[2m# SSH into a specific VM\x1b[0m
-$ sf nodes ssh user@vm_xxxxxxxxxxxxxxxxxxxxx
+$ sf nodes ssh root@vm_xxxxxxxxxxxxxxxxxxxxx
 
 \x1b[2m# View logs from a specific VM\x1b[0m
 $ sf nodes logs -i vm_xxxxxxxxxxxxxxxxxxxxx

src/lib/nodes/ssh.ts

@@ -16,7 +16,12 @@ import { getApiUrl } from "../../helpers/urls.ts";
 import { getAuthToken } from "../../helpers/config.ts";
 
 const ssh = new Command("ssh")
-  .description("SSH into a VM on a node")
+  .description(`SSH into a VM on a node.
+
+Runs \`ssh\` with host keys from the API, forgoing the need to manually accept keys on first connect.
+Keys are fetched asynchronously from the VM's SSH server and may take a moment to populate.
+
+Standard \`ssh\` behavior applies (e.g. defaults to your current username).`)
   .showHelpAfterError()
   .option("-q, --quiet", "Quiet mode", false)
   .option(
@@ -27,25 +32,23 @@ const ssh = new Command("ssh")
   .addOption(jsonOption)
   .argument(
     "<destination>",
-    "USERNAME@HOST The (optional) username, and node name/ID or VM ID to SSH into",
+    "Node name, Node ID, or VM ID to SSH into.\nFollows \`ssh\` behavior (i.e. root@node or jenson@node).",
   )
+  .usage("[options] [user@]<destination>")
   .allowExcessArguments(false)
   .addHelpText(
     "after",
     `
 Examples:
 
   \x1b[2m# SSH into a node's current VM\x1b[0m
-  $ sf nodes ssh my-node
+  $ sf nodes ssh root@my-node
 
   \x1b[2m# SSH with a specific username\x1b[0m
   $ sf nodes ssh jenson@my-node
-
+  
   \x1b[2m# SSH directly to a VM ID\x1b[0m
-  $ sf nodes ssh vm_xxxxxxxxxxxxxxxxxxxxx
-
-  \x1b[2m# SSH with username to a VM ID\x1b[0m
-  $ sf nodes ssh huang@vm_xxxxxxxxxxxxxxxxxxxxx
+  $ sf nodes ssh root@vm_xxxxxxxxxxxxxxxxxxxxx
 `,
   )
   .action(async (destination, options) => {

src/lib/vm/list.ts

@@ -144,7 +144,7 @@ You can use ${
     console.log(table.toString());
     console.log(`\n${gray("Use VM IDs to access and replace VMs.")}\n`);
     console.log(gray("Examples:"));
-    console.log(`  sf vm ssh ${cyan(`USERNAME@${exampleId}`)}`);
+    console.log(`  sf vm ssh ${cyan(`root@${exampleId}`)}`);
     console.log(`  sf vm logs -i ${cyan(exampleId)} -f`);
     console.log(`  sf vm replace -i ${cyan(exampleId)}`);
   });

src/lib/vm/ssh.ts

@@ -21,7 +21,7 @@ export function registerSsh(program: Command) {
     )
     .argument(
       "<destination>",
-      "USERNAME@VM_ID The (optional) username, and VM id to SSH into.",
+      "[user@]vm_id - The (optional) username, and VM id to SSH into.",
     )
     .allowExcessArguments(false)
     .action(async (destination, options) => {