diff --git a/clite/shell.js b/clite/shell.js
index b74188e..28c2540 100644
--- a/clite/shell.js
+++ b/clite/shell.js
@@ -82,6 +82,12 @@ clite.commands.load('sh',function(args,env,io) {
 			env[parts[0]] = parts[1];
 			return 0;
 		},
+		true:function(args,io) {
+			return 0;
+		},
+		false:function(args,io) {
+			return 1;
+		},
 		exit:function(args,io) {
 			has_exited = true;
 			var ev = 0;