improve usage message

mesocentre-mcia · Mar 6, 2015 · c76673f · c76673f
1 parent b309bd1
commit c76673f
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/scripts/iextract b/scripts/iextract
@@ -178,7 +178,12 @@ if __name__ == "__main__":
     usage = """\
 usage: %prog [options] COLLECTION...
 
-extract data and metadata out of iRODS
+extract data and metadata out of iRODS.
+
+Data are extracted through irsync inside a local directory named after COLLECTION basename.
+
+If metadata (system, acls or user) are required, they are stored in csv files also named after COLLECTION basename in
+the current working directory.
 """
 
     parser = OptionParser( usage = usage )