more pure bash to speed up things

dabo/functions/get_vars_from_csv.sh

@@ -13,18 +13,16 @@ 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
     mapfile -t f_last_lines_array <<< $(tail -n4 "${f_ASSET_HIST_FILE}")
   fi
 
-
-  set -x
   # if there are not four lines
   [ -z "${f_last_lines_array[3]}" ] && return 1
 
-
   # create array of last line fields
   #f_last_line="$(tail -n1 "${f_ASSET_HIST_FILE}"),${f_market_performance}"
   f_last_line="${f_last_lines_array[3]},${f_market_performance}"