Added yes (yes)

2 files changed, 22 insertions, 0 deletions

diff --git a/README.md b/README.md
index 11ca0f7..b287118 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@ Rewrite of some core utilities for educational purposes.
 | `tee`      | read from standard input and write to standard output and files  |
 | `shuf`     | generate random permutations                                     |
 | `echo`     | display a line of text                                           |
+| `yes`      | output a string repeatedly until killed                          |
 
 ## Pending
 
diff --git a/src/yes.c b/src/yes.c
new file mode 100644
index 0000000..9ae510c
--- /dev/null
+++ b/src/yes.c
@@ -0,0 +1,21 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+
+int main(int argc, char **argv)
+{
+	while (true)
+	{
+		if (argc == 1)
+			fputs("y", stdout);
+		else
+			for (int i = 1; i < argc; i++)
+			{
+				fputs(argv[i], stdout);
+				if (i < argc - 1)
+					putchar(' ');
+			}
+		putchar('\n');
+	}
+	return EXIT_SUCCESS;
+}