I've written this batch file to list images by date, it runs slow and relies on the gnu unix utilities. I was wondering if there was a faster way to do this

@echo off
rem  batch file # ==========================================================
rem  Name...........: getimagebyage.bat
rem  Description ...: List images by age
rem  Parameters ....: 
rem     %1 -  filter
rem  Returns .......: 
rem  Author  .......:  Thomas Bodine
rem  Modified.......:
rem  Remarks .......:
rem ======================================================================
if not exist output md output
nova image-list > output/images.txt
set target=output/images.txt
if [%1] == [] goto :nofilter
  grep -i %1  output/images.txt > output/imageFiltered.txt
  set target=output/imageFiltered.txt
:nofilter
cut -c42-98 %target% > output/imageNames.txt
C:\Windows\System32\find.exe /v "-----" output/imageNames.txt > output/justNames.txt 2> NUL:
del /q output\imageage.txt
for /f "tokens=*" %%A in (output\justNames.txt) do call :getage %%A  
sort output/imageage.txt > output/sortedImageAge.txt
start "" C:\Windows\System32\notepad.exe output/sortedImageAge.txt
goto :EOF
:getage
  rem echo on
  if [%1]==[] goto :EOF
  if [%1]==[----------] goto :EOF
  if [%1]==[Name] goto :EOF
  set imageName=%*
  glance image-show "%imageName%" > output\imageinfo.txt
  perl -n -e "print $1,'  ',""%imageName%\r\n"" if (/updated.*(\s\d\d\S+)/)" output\imageinfo.txt
  perl -n -e "print $1,'  ',""%imageName%\r\n"" if (/updated.*(\s\d\d\S+)/)" output\imageinfo.txt >> output\imageage.txt
  @echo off
goto :EOF
:EOF



Thanks for your time and attention.