Delete largest files with persistence linux script

dpa.sh

# User input variables 

max_files=20 #No of files to List
scandirs="./scan-dirs.txt" #list of directories separated by newline to scan
ignore_files="./ignore-files.txt" #non-deleted files path will be stored here to avoid re-appearing

# Program Tests

test -f $scandirs || touch $scandirs
test -f $ignore_files || touch $ignore_files
test -f /tmp/maxfiles_mid || touch /tmp/maxfiles_mid

# Main Program

truncate -s 0 /tmp/maxfiles_mid
for dir in $(cat $scandirs); do 
	# 1 print conveyer id
	echo "Scanning $dir"
    find $dir -type f -printf "%s\t%p\n" 2> /dev/null | grep -vFf $ignore_files | sort -nr | head -$max_files | tee -a /tmp/maxfiles_mid  >> /dev/null
done

echo "\n\nLargest files along with their files sizes"
echo "=========================================="

cat /tmp/maxfiles_mid | sort -nr | grep -vFf $ignore_files | head -n $max_files | tee /tmp/maxfiles >> /dev/null
cat /tmp/maxfiles
echo "\n"
cat /tmp/maxfiles | awk '{$1=""; print $0}' | cut -c 2- | tee /tmp/maxfiles2 >>/dev/null

while IFS= read -r file; do
	read -p "Delete file $file? [y]: " answer</dev/tty
	if [ "$answer" = "y" ] ; then
		echo $file | sed 's/ /\\ /g' | xargs rm
		echo "Deleted: "$file
	else
		echo $file >> $ignore_files
	fi
done < /tmp/maxfiles2

How to run it

Mention directory to scan in ./scan-dirs.txt or $scandirs variable (line no.4)

bash dpa.sh