simple correction to last code
@ -1719,7 +1719,7 @@ case $fwin in
read -p ' Please enter the base name for output files : ' fira
#Go make a check if user inputed any value or not
invalid
if [[ -f "$fira ]]
if [[ -f "$fira" ]]
then
echo "Filename already exists , choose another name"
sleep 5