refactor: rename files

tools/shell/inc/shellCommand.h

@@ -51,4 +51,4 @@ void clearScreen(int ecmd_pos, int cursor_pos);
 void printChar(char c, int times);
 void positionCursor(int step, int direction);
 
-#endif
+#endif /*_TD_SHELL_COMMAND_H_*/

tools/shell/inc/shellInt.h

@@ -20,6 +20,9 @@
 #include "taos.h"
 #include "taosdef.h"
 
+#include <regex.h>
+#include <wordexp.h>
+
 #define MAX_HISTORY_SIZE     1000
 #define MAX_COMMAND_SIZE     1048586
 #define HISTORY_FILE         ".taos_history"

tools/shell/src/shellCommand.c

@@ -19,7 +19,6 @@
 #include "os.h"
 #include "shellInt.h"
 
-#include <regex.h>
 
 typedef struct {
   char widthInString;

tools/shell/src/shellEngine.c

@@ -28,8 +28,6 @@
 #include "ttypes.h"
 #include "tutil.h"
 
-#include <regex.h>
-#include <wordexp.h>
 
 /**************** Global variables ****************/
 #ifdef _TD_POWER_