diff --git a/base/scripts/init.tb b/base/scripts/init.tb
index 9320f52..8554f13 100644
--- a/base/scripts/init.tb
+++ b/base/scripts/init.tb
@@ -1,3 +1,3 @@
-%print 'this is an init script!'
+print 'this is an init script!'
 base:/bin/pctl ls
 base:/bin/tb -m interactive -preload base:/scripts/rc.tb
diff --git a/base/scripts/rc.tb b/base/scripts/rc.tb
index 758b976..ee9dc56 100644
--- a/base/scripts/rc.tb
+++ b/base/scripts/rc.tb
@@ -1,2 +1,2 @@
-%mkalias pctl base:/bin/pctl
-%mkalias tb base:/bin/tb
+mkalias pctl base:/bin/pctl
+mkalias tb base:/bin/tb
diff --git a/user/tb/interp.c b/user/tb/interp.c
index d7d7423..1e6d5b7 100644
--- a/user/tb/interp.c
+++ b/user/tb/interp.c
@@ -99,20 +99,23 @@ void tz_tokenize(Tokenizer *tz) {
 }
 
 void tz_classify(Tokenizer *tz) {
+  #define IF_RTCMD(name) if (string_strcmp(tk->str, #name) == 0) { \
+      tk->type = TOK_CMD; \
+      tk->cmd = &rt_ ## name; \
+    }
+
   Token *tk, *tktmp;
   LL_FOREACH_SAFE(tz->tokens, tk, tktmp) {
     if (tk->str[0] == '\'') {
       tk->type = TOK_STRING;
-    } else if (tk->str[0] == '%') {
-      RtCmd *cmd, *cmdtmp;
-      LL_FOREACH_SAFE(RTCMDS, cmd, cmdtmp) {
-        if (string_strcmp(tk->str, cmd->cmdname) == 0) {
-          tk->type = TOK_CMD;
-          tk->cmd = cmd;
-          break;
-        }
-      }
-    } else {
+    }
+    else IF_RTCMD(print)
+    else IF_RTCMD(mkalias)
+    else IF_RTCMD(PID)
+    else IF_RTCMD(do)
+    else IF_RTCMD(stackpush)
+    else IF_RTCMD(stackpop)
+    else {
       tk->type = TOK_MISC;
     }
   }
@@ -184,7 +187,7 @@ bool interp_runstring(char *string, InterpResult **res, bool logcmds, bool inter
 
     Token *cmdtk = tz.tokens;
     if (cmdtk->type == TOK_CMD) {
-      ok = cmdtk->cmd->fn(cmdtk->next);
+      ok = cmdtk->cmd(cmdtk->next);
       if (!ok) {
         usprintf(RES.errmsg, "cmd %s failed", cmdtk->str);
         goto next;
diff --git a/user/tb/interp.h b/user/tb/interp.h
index af719f9..2d4cbdb 100644
--- a/user/tb/interp.h
+++ b/user/tb/interp.h
@@ -21,7 +21,7 @@ typedef struct Token {
     TOK_MISC,
   } type;
 
-  struct RtCmd *cmd;
+  bool (*cmd)(struct Token *);
 } Token;
 
 typedef struct {
diff --git a/user/tb/runtime.h b/user/tb/runtime.h
index fb7140f..617ae25 100644
--- a/user/tb/runtime.h
+++ b/user/tb/runtime.h
@@ -30,6 +30,13 @@ void rt_init(void);
 extern RtCmd *RTCMDS;
 extern RtAlias *RTALIASES;
 
+bool rt_print(struct Token *);
+bool rt_mkalias(struct Token *);
+bool rt_PID(struct Token *);
+bool rt_do(struct Token *);
+bool rt_stackpush(struct Token *);
+bool rt_stackpop(struct Token *);
+
 void rtstringv_stackpushcopy(char *s, size_t len);
 char *rtstringv_stackpop(void);
 char *rtstringv_stackpeek(void);