You can adapt my linux bash script for such pointlessly "paranoid" purposes. I use it to prove to HIPAA auditors just how paranoid I can be, and it's above NIST requirements in the US.
https://github.com/spoollord/shredder Would require you to pkg_add pv base64. Or, just adapt the script without those. On Thu, Jan 11, 2018 at 8:26 AM, Ingo Schwarze <schwa...@usta.de> wrote: > Hi Andreas, > > Andreas Thulin wrote on Thu, Jan 11, 2018 at 02:45:21PM +0000: > > > Again, an ignorant question (as usual): > > How might I do something similar to > > # dd if=/dev/one of=/dev/sd0 bs=1M > > jot -cs '' 512 255 255 > > writes 512 bytes with all bits set. Feel free to use larger numbers > than 512. For large numbers, this is certainly slower than dd > because it uses an explicit loop with some conditionals and one > printf(3) for each byte. > > perl -e 'print "\xff"x512' > > may be faster. If i needed maximum speed, i'd probably write a two-line > C program. > > while true; do echo -n "\0377"; done > > works for the purist, but will hardly be fast. > > Btw., you are asking for "Hello World!", kind of. > It may be hard to find a program that can't solve your task... ;) > > > as a complement to the usual and well-described > > # dd if=/dev/zero of=/dev/sd0 bs=1M > > followed by > > # dd if=/dev/urandom of=/dev/sd0 bs=1M > > in order to achieve paranoid disk-wiping? > > I have no idea whether or not such paranoia makes sense. > Maybe, maybe not. > > Yours, > Ingo > >
