Add herbe (notification display)

programs/slstatus/components/hostname.c

@@ -0,0 +1,17 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdio.h>
+#include <unistd.h>
+
+#include "../slstatus.h"
+#include "../util.h"
+
+const char *
+hostname(const char *unused)
+{
+	if (gethostname(buf, sizeof(buf)) < 0) {
+		warn("gethostbyname:");
+		return NULL;
+	}
+
+	return buf;
+}