How shred very large folder and subfolder and files

Question

I want to shred or secure delete big folder that have about 100 GB information and many files What command or tool can I use for this?

Answer 1

The chattr command can be used to change a folder or files attributes.

So if you use

chattr -R +s the_big_folder

It will recursively add the secure delete attribute to all sub directorys and files. Which means that when you delete them they will be zero filled. Then, you just have to delete them using

rm -rf the_big_folder