I have a curiosity that I would like to indulge.I'm wondering about deleting a file in a secure manner. Something similar to an NSA or DOD wipe of an entire hard drive. Does anyone know of a utility script to do something like the following or would it be more complicated?:
1) Obtain the file size that is to be deleted2) Obtain a string of data from /dev/urandom exactly the size of the file that is to be deleted
3) Open the file for writing 4) Over write the file 5) repeat steps 2-4 n number of timesMy major uncertainty is whether or not there is a automatic guarantee that the file will be over written in the exact same spot on the physical HD.
If this is possible, are there differences in file systems that would affect the solution, such as one appropriate method for an Ext3 that would not work for Reiser?
smime.p7s
Description: S/MIME Cryptographic Signature
