From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <599f06db05082208167b392080@mail.gmail.com>
Date: Mon, 22 Aug 2005 10:16:31 -0500
From: Gorka guardiola <paurea@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] Q: checking CD vs. iso image
In-Reply-To: <1124730719.3070.34.camel@localhost.localdomain>
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Congratulations, you just reinvented cmp(1). You should now go for ps(1).

On 8/22/05, alexandr babic <alexandr@babi.cz> wrote:
> hi.
>=20
> and what about to compare one byte from cd with one byte from iso
> by following short program, but i haven't plan9 here so you have
> to try by yourself :-)
>=20
> alexandr.
>=20
>=20
> check.c
> ------------------------------
> #include <u.h>
> #include <libc.h>
>=20
> void main()
> {
> int cdfd,isofd,i,r;
> unsigned char C,I;
>=20
> cdfd=3Dopen("/dev/sdD0/data",OREAD);
> isofd=3Dopen("obraz.iso",OREAD);
>=20
> i=3D0;
>=20
> while(1)
> {
>  r=3Dread(cdfd,(void*)&C,1);
>  if(r=3D=3D0) break;
>  r=3Dread(isofd,(void*)&I,1);
>  if(r=3D=3D0) break;
>  i++;
>=20
>  if(C=3D=3DI) print("byte position=3D%d, bytes are same!\n",i);
>  else print("byte position=3D%d, bytes differ! cd is %d, iso is %d
> \n",i,C,I);
> }
>=20
> close(cdfd);
> close(isofd);
> exits(0);
> }
>=20
>=20


--=20
- curiosity sKilled the cat