Add a trivial ps command.
diff --git a/util-linux/more.c b/util-linux/more.c
index 745ae2b..72d58a6 100644
--- a/util-linux/more.c
+++ b/util-linux/more.c
@@ -79,7 +79,7 @@
 	    file = fopen(*argv, "r");
 
 	if (file == NULL) {
-	    perror("Can't open file");
+	    perror(*argv);
 	    exit(FALSE);
 	}
 	fstat(fileno(file), &st);