On Wed, 2005-08-17 at 00:33 +0100, Alan Cox wrote: > > If you use /dev/mem you should know what you are doing. Even with > "checks" dd if=/dev/zero of=/dev/mem will do bad things. Trapping > obviously bad cases is fine, but complete sanity checking may actually > be counter productive. >
Sometimes "dd if=/dev/zero of=/dev/mem" is helpful. When I was in Spain for some time, I needed to transfer lots of pictures to my home machine. But all I had access to was a broken Windows box that I could ssh but not scp? So I (stupidly) started a ftp daemon and started transfering them that way. I thought that creating a temp account and then changing the password via ssh would work. Well, the next day I was completely rooted (thank god it was only a box in my DMZ). Still, I was thousands of miles away and needed to kill the box. If I can't use it, I certainly wont let someone else use it. They took over pretty much all control to shutdown the machine remotely. So I finally was able to do the duty with "dd if=/dev/zero of=/dev/mem". And that's my story where that can be your friend :-) -- Steve - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
