here is the updator.out

player/Makefile

@@ -5,13 +5,15 @@ LDFLAGS = `pkg-config --libs mpv` -pthread -ldl
 
 EXE = bin/player.out
 CLIENT = bin/client.out
+UPDATOR = bin/update.out
 FILES = socket.c mpv.c thread_pool.c server.c database.c sqlite3.c db/utils.c db/update.c
 
+
 OBJ = $(FILES:%.c=obj/%.o)
 SRC = $(FILES:%.c=src/%.c)
 
 
-all: prepare $(EXE) $(CLIENT)
+all: prepare $(EXE) $(CLIENT) $(UPDATOR)
 
 
 prepare:
@@ -44,4 +46,8 @@ $(CLIENT): $(OBJ) obj/client_main.o
 	$(CC) -o $@ obj/client_main.o obj/socket.o $(LDFLAGS)
 
 
+$(UPDATOR): $(OBJ) obj/db/update_main.o
+	$(CC) -o $@ obj/db/update_main.o obj/db/update.o obj/db/utils.o obj/sqlite3.o $(LDFLAGS)
+
+
 .PHONY: clean style prepare

player/src/db/update_main.c

+#include "db/update.h"
+#include "sqlite3.h"
+
+
+#define _GNU_SOURCE
+
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <string.h>
+
+
+int main(int argc, char ** argv)
+{
+  struct stat path_stat;
+
+  if (argc != 2)
+  { return 1; }
+
+  char * arg1 = argv[1];
+  char * arg2 = argv[2];
+  size_t len1 = strlen(arg1);
+  size_t len2 = strlen(arg2);
+
+  /* Get the sqlite database */
+  if ((len1 - 5 > 0) && strncmp(arg1 + (len1 - 5), ".sqlt", 5) == 0)
+  {
+    stat(arg1, &path_stat);
+
+    if (! S_ISREG(path_stat.st_mode))
+    { return 10; }
+  }
+
+  /* Get the root of the kara base, can't be `/` */
+  if (len2 < 2)
+  { return 21; }
+
+  stat(arg2, &path_stat);
+
+  if (! S_ISDIR(path_stat.st_mode))
+  { return 20; }
+
+  /* Open the sqlite database */
+  sqlite3 * db = NULL;
+
+  if ( sqlite3_open(arg1, &db) )
+  { return 50; }
+
+  int sta = lektor_db_update(db, arg2);
+
+  if (sta != 0)
+  { return 60; }
+
+  sqlite3_close(db);
+  return 0;
+}