Initial version.

auto/echo/echo.c

@@ -0,0 +1,43 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) NGINX, Inc.
+ *
+ * A portable "echo" program that supports "-n" option:
+ *     echo Hello world!
+ *     echo "Hello world!"
+ *     echo -n Hello world!
+ *     echo
+ *
+ * It also passes "\c" characters as is.
+ */
+
+
+#include <stdio.h>
+#include <string.h>
+
+
+int
+main(int argc, char *const *argv)
+{
+    int  i = 1;
+    int  nl = 1;
+
+    if (argc > 1) {
+        if (strcmp(argv[1], "-n") == 0) {
+            nl = 0;
+            i++;
+        }
+
+        while (i < argc) {
+            printf("%s%s", argv[i], (i == argc - 1) ? "" : " ");
+            i++;
+        }
+    }
+
+    if (nl) {
+        printf("\n");
+    }
+
+    return 0;
+}