init commit

3sem/kr/signal.c

@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/wait.h>
+#include <string.h>
+#include <signal.h>
+
+int
+main(int argc, char **argv)
+{
+
+    return 0;
+}