use  #!/usr/bin/env bash
for portability
diff --git a/releng.control/miscSampleScripts/replaceString.sh b/releng.control/miscSampleScripts/replaceString.sh
index 5a17761..a8a34d3 100644
--- a/releng.control/miscSampleScripts/replaceString.sh
+++ b/releng.control/miscSampleScripts/replaceString.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 # example as used in script
     fromString="webtools/committers"