From 453caf26bf1d456f70d1dd94c2abc6e2c6bf48c1 Mon Sep 17 00:00:00 2001
From: "Bradley M. Kuhn" <bkuhn@ebb.org>
Date: Wed, 30 Dec 2015 03:17:33 -0800
Subject: [PATCH] exit on wrong number of args.

---
 scripts/db-convert-0.1-to-0.2.plx | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/scripts/db-convert-0.1-to-0.2.plx b/scripts/db-convert-0.1-to-0.2.plx
index d4185f4..d1b487f 100644
--- a/scripts/db-convert-0.1-to-0.2.plx
+++ b/scripts/db-convert-0.1-to-0.2.plx
@@ -7,6 +7,11 @@ use DBI;
 use Encode qw(encode decode);
 use Supporters;
 
+if (@ARGV != 2) {
+  print STDERR "usage: $0 <OLD_SUPPORTERS_SQLITE_DB_FILE> <NEW_SUPPORTERS_SQLITE_DB_FILE>\n";
+  exit 1;
+}
+
 my($OLD_SUPPORTERS_SQLITE_DB_FILE, $NEW_SUPPORTERS_SQLITE_DB_FILE) = @ARGV;
 
 my $dbhOld = DBI->connect("dbi:SQLite:dbname=$OLD_SUPPORTERS_SQLITE_DB_FILE", "", "",