Let's face it - we do a lot that involves sensitive information. On Windows, I've installed the SDelete command from SysInternals (thank you, Microsoft, for buying them and NOT cancelling their work!). On Ubuntu, it's just as easy...
To install the secure delete tools:
user@machine:~$ sudo apt-get install secure-delete
To delete a file, just use the "srm" command:
user@machine:~$ srm filename
The more ya know...
