Index: trunk/Ohana/src/opihi/cmd.basic/substr.c
===================================================================
--- trunk/Ohana/src/opihi/cmd.basic/substr.c	(revision 2598)
+++ trunk/Ohana/src/opihi/cmd.basic/substr.c	(revision 7917)
@@ -7,5 +7,5 @@
 
   if ((argc != 4) && (argc != 5)) {
-    fprintf (stderr, "USAGE: substr (string) N1 N2 [var]\n");
+    gprint (GP_ERR, "USAGE: substr (string) N1 N2 [var]\n");
     return (FALSE);
   }
@@ -30,5 +30,5 @@
     set_str_variable (argv[4], string);
   } else {
-    fprintf (stderr, "%s\n", string);
+    gprint (GP_ERR, "%s\n", string);
   }
   free (string);