better warning when no input available

diff --git a/PWGPP/scripts/utilities.sh b/PWGPP/scripts/utilities.sh
index 9a7cdcfcb072717a5603edf65e5f452d11d00922..dda1bad5165376ffc1520a4ee374b3c3304eeb06 100644 (file)
--- a/PWGPP/scripts/utilities.sh
+++ b/PWGPP/scripts/utilities.sh
@@ -434,8 +434,7 @@ plotStackTraceTree()
   local tree=$1
   local plot=${2:-"crashes.png"}
   local selection=${3:-'!strstr(method,\"G__\")'}
-  echo $selection
-  [[ ! -f ${tree} ]] && echo "no input" && return 1
+  [[ ! -f ${tree} ]] && echo "plotStackTraceTree: no input file given" && return 1
   aliroot -b <<EOF
 TTree* t=AliSysInfo::MakeTree("${tree}");
 TCanvas* canvas = new TCanvas("QA crashes","QA crashes",1);