1, the problem background
As we all know, the deletion of the system actually did not erase the real data.
Only marked for deletion, you can use the empty resource.
As long as the real content is not occupied, some recovery tools can be used to recover these files.
But then there was a problem, and there was a risk for documents with higher confidentiality requirements. How can you guarantee the security of your data?
The method is actually to put the contents of the file space before the deletion of all the other content, it can be.
2. Installation and configuration of Secure-delete
Secure-delete can help us safely remove files and play the role of Shredder.
1
sudo apt-get install Secure-delete
3, in the XFCE configuration
Note: I am using XFCE so the corresponding file manager is Thunar, if the gnome corresponding file manager is Nautilus
Need to install Nautilus-actions
Edit->configure custom action...> dot "Plus" add an action
Name:secure Delete
COMMAND:SRM-RF%F
Press the above to fill in, and then select an icon. %f means to select all the files. The-RF and RM Directives Force recursive deletion.
Select the following options in appearance conditions to take effect for all types of files.
Note: The desktop needs to be restarted to take effect.
4, the effect
Right-click on a file or multiple files-> Select Secure Delete
The file is safely deleted.
5. Legacy issues
A secure Delete cannot be displayed when the desktop is multiple selected, and the radio can be selected.