diff --git a/nshlib/nsh_command.c b/nshlib/nsh_command.c
index 5bc7ab01a..2e419970b 100644
--- a/nshlib/nsh_command.c
+++ b/nshlib/nsh_command.c
@@ -470,7 +470,8 @@ static const struct cmdmap_s g_cmdmap[] =
 #endif
 
 #if defined(CONFIG_RPTUN) && !defined(CONFIG_NSH_DISABLE_RPTUN)
-  { "rptun",    cmd_rptun,    3, 4, "start|stop|reset|panic <dev-path> [value]" },
+  { "rptun",    cmd_rptun,    3, 4,
+    "start|stop|reset|panic|dump <dev-path> [value]" },
 #endif
 
 #ifndef CONFIG_NSH_DISABLE_SET
diff --git a/nshlib/nsh_syscmds.c b/nshlib/nsh_syscmds.c
index ce63a2ac2..b903f49fe 100644
--- a/nshlib/nsh_syscmds.c
+++ b/nshlib/nsh_syscmds.c
@@ -377,6 +377,10 @@ int cmd_rptun(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
     {
       cmd = RPTUNIOC_PANIC;
     }
+  else if (strcmp(argv[1], "dump") == 0)
+    {
+      cmd = RPTUNIOC_DUMP;
+    }
   else
     {
       nsh_output(vtbl, g_fmtarginvalid, argv[1]);