Updates

kernel/bin/clear

@@ -88,12 +88,30 @@ function bareOsEmitRaw(ctx, chunk) {
 }
 
 async function run(ctx, argv) {
+  for (const a of argv.slice(1)) {
+    if (a === '--help' || a === '-h') {
+      ctx.console.error('Usage: clear')
+      return
+    }
+    if (a.startsWith('-')) {
+      ctx.console.error('clear: invalid option')
+      ctx.exitCode = 1
+      return
+    }
+  }
+
   /* Keep in sync with packages/bare-os-booter/lib/terminal-escapes.js XTERM_CLEAR_SCROLLBACK_AND_VIEWPORT */
   const seq = '\x1b[H\x1b[3J\x1b[2J\x1b[0m'
+  const term = String(ctx.vfs?.env?.TERM || globalThis.process?.env?.TERM || '')
+  if (term === 'dumb') return
+
   if (typeof ctx.writeScreen === 'function') {
     ctx.writeScreen(seq)
     return
   }
+
+  if (bareOsEmitRaw(ctx, seq)) return
+
   globalThis.console.clear?.()
   const ps = globalThis.process?.stdout
   if (ps && typeof ps.write === 'function') {