From 2402dcd4c9eaec5599300f88aba6b99ea1ebb1aa Mon Sep 17 00:00:00 2001
From: andrewk <andrewk@348d0f76-0448-11de-a6fe-93d51630548a>
Date: Mon, 31 Aug 2009 00:28:43 +0000
Subject: [PATCH] Give usage message if no arguments provided.

git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@1483 348d0f76-0448-11de-a6fe-93d51630548a
---
 python/AlignBam.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/python/AlignBam.py b/python/AlignBam.py
index ac4b82364..1c27789b7 100755
--- a/python/AlignBam.py
+++ b/python/AlignBam.py
@@ -38,6 +38,9 @@ def run_paired_BWA(bam):
     cmd("/seq/dirseq/samtools/current/samtools import "+bam_ref_list+" "+alignedsam+" "+alignedbam)
     
 if __name__ == "__main__":
+    if len(sys.argv) < 2:
+        print "Usage: AlignBam.py BAM_FILE"
+        sys.exit()
     bam = sys.argv[1]
     run_paired_BWA(bam)