cat: /dev/mem: Operation not permitted

[Tony Arnold]

Dotan,

Dotan Cohen wrote:
> $ sudo cat /dev/mem | strings > mem.txt
> cat: /dev/mem: Operation not permitted

I just tried $sudo cat /dev/mem and got lots of wierd stuff on the
screen, as I would expect.

I then tried sudo cat /dev/mem > mem.txt. It sat there for a while, and
I got the same error as you when I hit ctrl-C. mem.txt did contain some
data.

I'm guessing you cannot do a file close operation on /dev/mem, for some
reason.

Regards,
Tony.
-- 
Tony Arnold,                        Tel: +44 (0) 161 275 6093
Head of IT Security,                Fax: +44 (0) 870 136 1004
University of Manchester,           Mob: +44 (0) 773 330 0039
Manchester M13 9PL.                 Email: tony.arnold at manchester.ac.uk