diff --git a/src/true.c b/src/true.c
new file mode 100644
index 0000000..061ed7e
--- /dev/null
+++ b/src/true.c
@@ -0,0 +1,3 @@
+int main(void) {
+	return 0;
+}
diff --git a/src/yes.c b/src/yes.c
new file mode 100644
index 0000000..2e07bef
--- /dev/null
+++ b/src/yes.c
@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+void print(const char *buf, ssize_t len) {
+	if (write(STDOUT_FILENO, buf, len) < 0)
+		exit(1);
+}
+
+int main(const int argc, const char **argv) {
+	if (argc == 1)
+		while (1)
+			print("y\n", 2);
+
+	while (1) {
+		for (ssize_t i = 1; i < argc; i++) {
+			print(argv[i], strlen(argv[i]));
+			print(" ", 1);
+		}
+
+		print("\n", 1);
+	}
+}