diff --git a/pipetester.c b/pipetester.c
new file mode 100644
index 0000000..833d61e
--- /dev/null
+++ b/pipetester.c
@@ -0,0 +1,61 @@
+
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+void error(char *msg)
+{
+	write(2, msg, strlen(msg));
+}
+
+int main(void)
+{
+	int fd_in = STDIN_FILENO;
+	int fd_out = STDOUT_FILENO;
+	struct stat statbuf_in;
+	struct stat statbuf_out;
+
+	if (fstat(fd_in, &statbuf_in) == -1)
+	{
+		perror("fstat");
+		return (1);
+	}
+	error("STDIN File type: ");
+
+   switch (statbuf_in.st_mode & S_IFMT) {
+    case S_IFBLK:  error("block device\n");            break;
+    case S_IFCHR:  error("character device\n");        break;
+    case S_IFDIR:  error("directory\n");               break;
+    case S_IFIFO:  error("FIFO/pipe\n");               break;
+    case S_IFLNK:  error("symlink\n");                 break;
+    case S_IFREG:  error("regular file\n");            break;
+    case S_IFSOCK: error("socket\n");                  break;
+    default:       error("unknown?\n");                break;
+    }
+
+
+	error("\n");
+
+	if (fstat(fd_out, &statbuf_out) == -1)
+	{
+		perror("fstat");
+		return (1);
+	}
+
+error("STDOUT File type: ");
+
+   switch (statbuf_out.st_mode & S_IFMT) {
+    case S_IFBLK:  error("block device\n");            break;
+    case S_IFCHR:  error("character device\n");        break;
+    case S_IFDIR:  error("directory\n");               break;
+    case S_IFIFO:  error("FIFO/pipe\n");               break;
+    case S_IFLNK:  error("symlink\n");                 break;
+    case S_IFREG:  error("regular file\n");            break;
+    case S_IFSOCK: error("socket\n");                  break;
+    default:       error("unknown?\n");                break;
+    }
+
+
+	return (0);
+}