Try working around John Morgan's which command

1 files changed, 1 insertions, 1 deletions

diff --git a/bjam b/bjam
index 962d5a87a..c58c15c1a 100755
--- a/bjam
+++ b/bjam
@@ -2,7 +2,7 @@
 set -e
 if 
   which bjam >/dev/null 2>/dev/null && #Have a bjam in path
-  ! grep UFIHGUFIHBDJKNCFZXAEVA "$(which bjam)" >/dev/null && #bjam in path isn't this script
+  ! grep UFIHGUFIHBDJKNCFZXAEVA "$(which bjam)" </dev/null >/dev/null && #bjam in path isn't this script
   bjam --help >/dev/null 2>/dev/null && #bjam in path isn't broken (i.e. has boost-build)
   bjam --version |grep "Boost.Build 201" >/dev/null 2>/dev/null #It's recent enough.  
 then