Hi!

I asked a few days ago how to redirect error messages from std i/o to file. Your answer was: run the program with arguments. My problem is: The program is a web-server application, and if there is an error while the program is running the error message will be displayed in the browser. Becouse this program is an web-server application, I can't run it with arguments...

Please help me!

LATte

Lindmayer Antal wrote

Hi! I asked a few days ago how to redirect error messages from std i/o to file. Your answer was: run the program with arguments.

The solution is to close stderr and to re-open it to a file:

  Close(stdErr);
  Assign(stderr,'somefile');
  rewrite(stderr);
  // now all errors go to somefile...

Make sure you have write permission on somefile.

Michael.

What type of error message (run time, etc)

Hi...

I'm using Postgres and the Linux Unit, right now I call a field by his field number, something like :
PQgetvalue(res, i, 1);

	But I would like to use the field name...some like :
PQgetvalue(res, i, my_field);
	I guess there is another function, any tip ???....

Thanks.....

Ing. Morquecho Morquecho
Cedetel
Desarrollo de proyectos comerciales
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"#define QUESTION ((bb) || !(bb)) // Shakespeare"

PQgetvalue(res, i, PQfnumber(res,'fieldname'));

I tried it under win98 in a dos box (go32v2) with snapshot from today and get only a file with length 0 byte.The error message appeard on the screen.

close(stderr);
assign(stderr,'err.txt');
rewrite(stderr);
mem[$fffff]:=0;

Dirk

Haven't you forgotten to close the stderr file after writing to it ?

Adam Naumowicz

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WWW: http://math.uwb.edu.pl/~adamn/
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i had a close in the exithandler. But i removed it because i think freepascal makes a close, too.

Dirk Verwiebe

Seems that the message was being written to stdout and not stderr... Make sure that it indeed goes to stderr.
Kuba

> Haven't you forgotten to close the stderr file after writing to it ?

I have installed an exit handler,too.There is the stderr closed. The exit handler was correctly called when the error occurs but the file is still 0 byte.

Seems that the message was being written to stdout and not stderr... Make sure that it indeed goes to stderr.

The message is apears on screen.I thought the lines above redirect it to stderr.

Dirk

Well, what I mean is that you should make sure that whatever code writes the message, it writes it to stderr. The code redirects stderr to the file, but if you write the message to stdout it won't help much, right?

Kuba