Updates

kernel/bin/mkdir

@@ -144,7 +144,11 @@ async function run(ctx, argv) {
       if (modeOpt != null) mkOpts.mode = modeOpt
       await ctx.vfs.mkdir(p, mkOpts)
     } catch (e) {
-      ctx.console.error('mkdir: ' + p + ': ' + ((e && e.message) || e))
+      const code =
+        e && typeof e === 'object' && typeof e.code === 'string' ? e.code : ''
+      const base = (e && e.message) || String(e)
+      const tail = code ? `${code}: ${base}` : base
+      ctx.console.error(`mkdir: ${p}: ${tail}`)
       ctx.exitCode = 1
     }
   }