Merge commit 'e2a5e6750a362e0fd8c89f3d1d40a623ba6d1fd6'

labs/03_shlab/myspin.c

@@ -0,0 +1,24 @@
+/* 
+ * myspin.c - A handy program for testing your tiny shell 
+ * 
+ * usage: myspin <n>
+ * Sleeps for <n> seconds in 1-second chunks.
+ *
+ */
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv) 
+{
+	int i, secs;
+
+	if (argc != 2) {
+		fprintf(stderr, "Usage: %s <n>\n", argv[0]);
+		exit(0);
+	}
+	secs = atoi(argv[1]);
+	for (i=0; i < secs; i++)
+		sleep(1);
+	exit(0);
+}