Add namespace.c

src/cmd/namespace.c

@@ -0,0 +1,33 @@
+#include <u.h>
+#include <libc.h>
+
+void
+usage(void)
+{
+	fprint(2, "usage: namespace\n");
+	exits("usage");
+}
+
+void
+main(int argc, char **argv)
+{
+	char *ns;
+
+	ARGBEGIN{
+	default:
+		usage();
+	}ARGEND
+
+	if(argc)
+		usage();
+
+	ns = getns();
+	if(ns == nil){
+		fprint(2, "namespace: %r\n");
+		exits("namespace");
+	}
+
+	print("%s\n", ns);
+	exits(0);
+}
+