diff --git a/lualinux.c b/lualinux.c
index f3d1a4d..9c5dc9c 100644
--- a/lualinux.c
+++ b/lualinux.c
@@ -387,6 +387,18 @@ static int ll_readlink(lua_State *L) {
 	RET_STRN(buf, n);
 }
 
+static int ll_realpath(lua_State *L) {
+	const char *pname = luaL_checkstring(L, 1);
+	char * resolved = realpath(pname, NULL); /* mallocs */
+	if (resolved == 0) {
+	    RET_ERRNO;
+	} else {
+	    lua_pushstring(L, resolved);
+	    free(resolved);
+	    return 1;
+	}
+}
+
 static int ll_lstat3(lua_State *L) {
 	// lua api: lstat3(path [,statflag:int])
 	// if statflag=1: do stat(). default: do lstat
@@ -924,6 +936,7 @@ static const struct luaL_Reg lualinuxlib[] = {
 	{"readdir", ll_readdir},
 	{"closedir", ll_closedir},
 	{"readlink", ll_readlink},
+	{"realpath", ll_realpath},
 	{"lstat3", ll_lstat3},
 	{"lstat", ll_lstat},
 	{"utime", ll_utime},
@@ -969,4 +982,3 @@ int luaopen_lualinux (lua_State *L) {
 	lua_settable (L, -3);
 	return 1;
 }
-