more pure bash to speed up things

dabo/functions/get_vars_from_csv.sh

@@ -13,12 +13,13 @@ function get_vars_from_csv {
   fi
   f_all_vars="f_market_performance=${f_market_performance}"
 
+  set -x
   # read last 4 lines in array if not given
   if [ -z "${f_last_lines_array}" ]
   then
-    echo "open file ${f_ASSET_HIST_FILE}"
     mapfile -t f_last_lines_array < <(tail -n4 "${f_ASSET_HIST_FILE}")
   fi
+  set +x  
 
   # if there are not four lines
   if [ -z "${f_last_lines_array[3]}" ]