Add a pseudo-daemonizing clock app

userspace/clock.c

@@ -0,0 +1,38 @@
+/*
+ * clock
+ *
+ * Test shell for ToAruOS
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <syscall.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+
+struct timeval {
+	unsigned int tv_sec;
+	unsigned int tv_usec;
+};
+
+int main(int argc, char ** argv) {
+	if (!fork()) {
+		struct timeval now;
+		int last = 0;
+		struct tm * timeinfo;
+		char   buffer[80];
+		while (1) {
+			syscall_gettimeofday(&now, NULL); //time(NULL);
+			if (now.tv_sec != last) {
+				last = now.tv_sec;
+				timeinfo = localtime((time_t *)&now.tv_sec);
+				strftime(buffer, 80, "%H:%M:%S", timeinfo);
+				printf("\033[s\033[1;200H\033[9D%s\033[u", buffer);
+				fflush(stdout);
+			}
+		}
+	}
+	return 0;
+}