Initial release

src/echo.c

@@ -0,0 +1,47 @@
+/* echo.c */
+
+
+
+#include <unistd.h>
+#include <stdio.h>
+
+
+/* echo */
+static int _echo(int argc, char * argv[])
+{
+	int i;
+
+	if(argc != 0)
+	{
+		printf("%s", argv[0]);
+		for(i = 1; i < argc; i++)
+			printf(" %s", argv[i]);
+	}
+	fputc('\n', stdout);
+	return 0;
+}
+
+
+/* usage */
+static int _usage(void)
+{
+	fprintf(stderr, "%s", "Usage: echo [string...]\n");
+	return 1;
+}
+
+
+/* main */
+int main(int argc, char * argv[])
+{
+	int o;
+
+	while((o = getopt(argc, argv, "")) != -1)
+	{
+		switch(o)
+		{
+			case '?':
+				return _usage();
+		}
+	}
+	return _echo(argc - 1, &argv[1]);
+}