diff --git a/user/tb/interp.c b/user/tb/interp.c
index ccafc5c..b461194 100644
--- a/user/tb/interp.c
+++ b/user/tb/interp.c
@@ -8,7 +8,7 @@
 extern PID_t PID;
 extern Dev_t ps2kbdev;
 
-static InterpResult RES;
+InterpResult RES;
 
 void tz_init(Tokenizer *tz, char *str) {
   tz->str = str;
@@ -116,6 +116,8 @@ void tz_classify(Tokenizer *tz) {
     else IF_RTCMD(do)
     else IF_RTCMD(stackpush)
     else IF_RTCMD(stackpop)
+    else IF_RTCMD(eachfile)
+    else IF_RTCMD(mkaliasbn)
     else {
       tk->type = TOK_MISC;
     }
diff --git a/user/tb/interp.h b/user/tb/interp.h
index 2d4cbdb..902b3fc 100644
--- a/user/tb/interp.h
+++ b/user/tb/interp.h
@@ -11,6 +11,8 @@ typedef struct {
   char errmsg[INTERP_ERRMSG_BUF_MAX];
 } InterpResult;
 
+extern InterpResult RES;
+
 typedef struct Token {
   struct Token *next;
   char *str;
diff --git a/user/tb/runtime.c b/user/tb/runtime.c
index 6610b18..4763039 100644
--- a/user/tb/runtime.c
+++ b/user/tb/runtime.c
@@ -167,11 +167,124 @@ bool rt_stackpop(Token *tks) {
   return true;
 }
 
-void rt_init(void) {
-  RTCMD("%print", &rt_print);
-  RTCMD("%mkalias", &rt_mkalias);
-  RTCMD("%PID", &rt_PID);
-  RTCMD("%do", &rt_do);
-  RTCMD("%stackpush", &rt_stackpush);
-  RTCMD("%stackpop", &rt_stackpop);
+typedef struct EachFileSkip {
+  struct EachFileSkip *next;
+  char *filename;
+} EachFileSkip;
+
+bool rt_eachfile(Token *tks) {
+  EachFileSkip *skips = NULL;
+
+  Token *tk = tks;
+  char *dirpath;
+
+  while (tk && tk->str[0] == '!') {
+    EachFileSkip *skip = (EachFileSkip *)umalloc(sizeof(*skip));
+    skip->filename = tk->str + 1;
+    LL_APPEND(skips, skip);
+    tk = tk->next;
+  }
+
+  if (tk != NULL) {
+    dirpath = tk->str;
+    tk = tk->next;
+  }
+
+  FsStat statbuf; ZERO(&statbuf);
+  if (fs_stat(dirpath, &statbuf) != E_OK || statbuf.type != FSSTAT_DIR) {
+    return false;
+  }
+
+  FsDirent *dirents = (FsDirent *)umalloc(statbuf.size * sizeof(*dirents));
+
+  for (size_t i = 0; i < statbuf.size; i++) {
+    fs_fetchdirent(dirpath, &dirents[i], i);
+    FsDirent *dirent = &dirents[i];
+
+    if (string_strcmp(dirent->name, ".") == 0 || string_strcmp(dirent->name, "..") == 0) {
+      continue;
+    }
+    
+    EachFileSkip *skip1, *skip1tmp;
+    LL_FOREACH_SAFE(skips, skip1, skip1tmp) {
+      if (string_strcmp(skip1->filename, dirent->name) == 0) {
+        goto nextiter;
+      }
+    }
+
+    char tmpbuf[1024]; ZERO(tmpbuf);
+    string_strcpy(tmpbuf, dirpath);
+    if (dirpath[string_len(dirpath) - 1] != '/') {
+      string_combine(tmpbuf, "/");
+    }
+    string_combine(tmpbuf, dirent->name);
+    
+    #define EACHFILE_MAX_STRING 1024
+    char *s = umalloc(EACHFILE_MAX_STRING);
+    string_memset(s, 0, EACHFILE_MAX_STRING);
+    size_t cursor = 0;
+    Token *argtk, *argtktmp;
+    LL_FOREACH_SAFE(tk, argtk, argtktmp) {
+      if (string_strcmp(argtk->str, "&EF-ELEM") == 0) {
+        size_t len = string_len(tmpbuf);
+        string_memcpy(&s[cursor], tmpbuf, len);
+        cursor += len;
+        s[cursor] = ' ';
+        cursor++;
+      } else {
+        size_t len = string_len(argtk->str);
+        string_memcpy(&s[cursor], argtk->str, len);
+        cursor += len;
+        s[cursor] = ' ';
+        cursor++;
+      }
+    }
+
+    InterpResult save; string_memcpy(&save, &RES, sizeof(save));
+    InterpResult *res;
+    interp_runstring(s, &res, false, false);
+    string_memcpy(&RES, &save, sizeof(save));
+    
+    /* ufree(s); */
+
+nextiter:
+  }
+
+  ufree(dirents);
+
+  EachFileSkip *skip1, *skip1tmp;
+  LL_FOREACH_SAFE(skips, skip1, skip1tmp) {
+    ufree(skip1);
+  }
+
+  return true;
+}
+
+bool rt_mkaliasbn(Token *tks) {
+  Token *tk = tks;
+
+  if (tk == NULL) {
+    return false;
+  }
+
+  RtAlias *alias = umalloc(sizeof(*alias));
+  string_memset(alias, 0, sizeof(*alias));
+
+  char *basename = (char *)path_basename(tk->str);
+  string_memcpy(alias->namebuf, basename, MIN(string_len(basename), RTALIAS_NAMEBUF_MAX));
+  string_memcpy(alias->valbuf, tk->str, MIN(string_len(tk->str), RTALIAS_VALBUF_MAX));
+
+  LL_APPEND(RTALIASES, alias);
+  return true;
+}
+
+void rt_init(void) {
+  RTCMD("print", &rt_print);
+  RTCMD("mkalias", &rt_mkalias);
+  RTCMD("PID", &rt_PID);
+  RTCMD("do", &rt_do);
+  RTCMD("stackpush", &rt_stackpush);
+  RTCMD("stackpop", &rt_stackpop);
+  RTCMD("eachfile", &rt_eachfile);
+  RTCMD("mkaliasbn", &rt_mkaliasbn);
 }
diff --git a/user/tb/runtime.h b/user/tb/runtime.h
index 617ae25..95882d4 100644
--- a/user/tb/runtime.h
+++ b/user/tb/runtime.h
@@ -36,6 +36,8 @@ bool rt_PID(struct Token *);
 bool rt_do(struct Token *);
 bool rt_stackpush(struct Token *);
 bool rt_stackpop(struct Token *);
+bool rt_eachfile(struct Token *);
+bool rt_mkaliasbn(struct Token *);
 
 void rtstringv_stackpushcopy(char *s, size_t len);
 char *rtstringv_stackpop(void);