1 files changed, 20 insertions, 0 deletions
diff --git a/block.c b/block.c
new file mode 100644
index 0000000..40178d8
--- /dev/null
+++ b/block.c
@@ -0,0 +1,20 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <sys/select.h>
+
+// utility to block until stdin has input
+// public domain
+
+int main(int argc, char *argv[]) {
+	fd_set readset;
+	FD_ZERO(&readset);
+	FD_SET(STDIN_FILENO, &readset);
+	if (select(1, &readset, NULL, NULL, NULL) == -1) {
+		perror(argv[0]);
+		return EXIT_FAILURE;
+	}
+
+	return 0;
+}