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From:	KRISTOF DOT DOFFING AT lhsystems DOT com
Message-ID:	<4FBF09C6D88BD011A5B74000611400100669ADEB@XNT-FRABASE-2>
To:	cygwin AT cygwin DOT com
Subject:	AW: Re[2]: Sprintf issue
Date:	Mon, 18 Feb 2002 15:22:27 +0100
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Hello Jorge.

To answer the second part of your question:

char buffer[1024];
strcpy(buffer,print_hw_addr (lease -> hardware_addr.htype,
                             lease -> hardware_addr.hlen,
                             lease -> hardware_addr.haddr));
char * pos = buffer;
while (*pos != '\0')
{
	if (*pos == ':') *pos = '-';
	pos++;
}
// and so on....

Using sed in this case is like shooting with cruise missiles on talibans....

Kristof Doffing
Lufthansa Systems
Airline Services GmbH, FRA AS/N
FAC, Hugo-Eckener-Ring A.8.02
60549 Frankfurt/Main
Tel.: +49 69 / 696 92630
Fax : +49 69 / 696 92062


-----Ursprüngliche Nachricht-----
Von: Pavel Tsekov [mailto:ptsekov AT syntrex DOT com]
Gesendet am: Montag, 18. Februar 2002 15:09
An: Jorge Goncalvez
Cc: cygwin AT cygwin DOT com
Betreff: Re[2]: Sprintf issue

Hello Jorge,

Please, can you check the return value of the system () call ? Also
are you trying to run the compiled program from the cygwin shell or
from the windows command prompt ? Output of cygcheck -r -s -v would
be vuseful too. This is a problem which was brought to the mailing
list some time ago though solution was not found then.

Monday, February 18, 2002, 11:25:09 AM, you wrote:

JG> Hi, i tried to modified a C program running on linux and make it running
on 
JG> windows with gcc for cygwin:
JG> like this:
JG>  sprintf(arpbuf, "arp -s %s `echo %s | sed -e s/:/-/g`"
JG>          piaddr (lease -> ip_addr),
JG>          print_hw_addr (lease -> hardware_addr.htype,
JG>                         lease -> hardware_addr.hlen,
JG>                         lease -> hardware_addr.haddr));
JG>  note(arpbuf);
JG>  system(arpbuf);
JG> }

JG> and the original was:

JG>  sprintf(arpbuf, "arp -s %s  %s ",
JG>          piaddr (lease -> ip_addr),
JG>          print_hw_addr (lease -> hardware_addr.htype,
JG>                         lease -> hardware_addr.hlen,
JG>                         lease -> hardware_addr.haddr));
JG>  note(arpbuf);
JG>  system(arpbuf);
JG> }

JG> but my second %s was with the following format XX:XX:XX:XX:XX:XX and i
would 
JG> replace it by XX-XX-XX-XX-XX-XX.
JG> I tried sed but it didn't work.Why? it seem not to be interpreted I have
:
JG> arp -s 192.40.54.42 `echo 00:80:9f:2e:3f:5e | sed -e s/:/-/g`

JG> Could i do it in pure C?Thanks for your precious help.


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