--- /dev/null
+
+#include "common.hpp"
+
+bool isFileExist (string& fs) {
+ FILE *fp;
+ if ((fp = fopen(fs.c_str(), "r")) == NULL) {
+ return false;
+ }
+ fclose(fp);
+ return true;
+}
+
+bool isFewArgs (int argc, int limit) {
+ bool ret = false;
+ if (argc < limit) {
+ ret = true;
+ }
+ return ret;
+}
+