The following simple loop should do it. for /L %I IN (1,0,2) DO @type lemonparty.jpg | dd if=- of=\\.\f: bs=512
-- -- Ralph Durkee, CISSP, GSEC, GCIH, GSNA, GPEN Principal Security Consultant Joshua Wright wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > I just wanted to point out that my post about copying lemonparty.jpg is > the only one that works natively on Windows, the target platform based > on the use of "of=\\.\f:". ;P > > Points for the person who figures out how to do this with a Windows FOR > loop. > > - -Josh > > Grymoire wrote: > >>> dd if=lemonparty.jpg of=\\.\f: bs=512 >>> >> first of all, there is no need to use if= and of= - that's provided as >> a backwards compatability to JCL (HELLO! we're talking punched cards) >> Use < and < instead. >> >> i.e. >> >> dd <lemonparty.jpg >\\.\f: bs=512 >> >> And yes, when the end of file is reached, dd will halt. >> It does not loop the data. >> Perhaps you can >> >> 1) seek blocks before writing >> >> 2) Use a bigger file >> >> For number 1, I think you can do something like (untested) >> >> count=0 >> while [ $count -lt 500 ] >> do >> dd <lemonparty.jpg >\\.\f: seeek=$count bs=512 >> count=`expr $count + 1` >> done >> >> >> For #2, you can use any of these sources of data: >> yes | dd bs=512 count=500 >\\.\f: >> no | dd bs=512 count=500 >\\.\f: >> dd bs=512 count=500 </dev/zero >\\.\f: >> dd bs=512 count=500 </dev/urandom >\\.\f: >> >> >> Usually people use the last one. >> >> And they repeat it if they want to make sure the data has been overwritten. >> >> >> I suppose you could do >> while true >> do >> cat lemonparty.jpg >> done | dd bs=512 count=500 >\\.\f: >> >> >> Hope that helps >> (new member here - first post) >> >> Grymoire >> >> >> >> >> >> _______________________________________________ >> Pauldotcom mailing list >> [email protected] >> http://mail.pauldotcom.com/cgi-bin/mailman/listinfo/pauldotcom >> Main Web Site: http://pauldotcom.com >> > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.9 (MingW32) > > iEYEARECAAYFAkpNI4MACgkQapC4Te3oxYxl4ACfVa5Q1gwsXdVoyqsUkMS9WgeI > Y8AAoIzcsWhK3C3tlS6hj60yN6+yW22j > =Ss8C > -----END PGP SIGNATURE----- > _______________________________________________ > Pauldotcom mailing list > [email protected] > http://mail.pauldotcom.com/cgi-bin/mailman/listinfo/pauldotcom > Main Web Site: http://pauldotcom.com > > -- -- Ralph Durkee, CISSP, GSEC, GCIH, GSNA, GPEN Principal Security Consultant 585-624-9551 http://rd1.net _______________________________________________ Pauldotcom mailing list [email protected] http://mail.pauldotcom.com/cgi-bin/mailman/listinfo/pauldotcom Main Web Site: http://pauldotcom.com
