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Hi
Im runnin a script which detatches from the tty and uses carp in
certain places. Is there any way i can redirect the STDERR messages to a
logfile instead of losing them to the ether??

many thanks

Ronan

"R McGlue" <> wrote in message
news:ch1ksm$nje$...
> Hi
> Im runnin a script which detatches from the tty and uses carp in
> certain places. Is there any way i can redirect the STDERR messages to
a
> logfile instead of losing them to the ether??

my $logfile = '/home/errs.txt';
open STDERR, '>>', $logfile or die "Could not redirect STDERR: $!";

(Note: Perl is smart enough to not lose track of the original STDERR if
the open fails here, so the die message will still be printed to
wherever STDERR is pointing if $logfile cannot be opened for appending.)

Hope this helps,
Paul Lalli

Paul Lalli wrote:

> "R McGlue" <> wrote in message
> news:ch1ksm$nje$...
>
>>Hi
>> Im runnin a script which detatches from the tty and uses carp in
>>certain places. Is there any way i can redirect the STDERR messages to
>
> a
>
>>logfile instead of losing them to the ether??
>
>
> my $logfile = '/home/errs.txt';
> open STDERR, '>>', $logfile or die "Could not redirect STDERR: $!";
>
> (Note: Perl is smart enough to not lose track of the original STDERR if
> the open fails here, so the die message will still be printed to
> wherever STDERR is pointing if $logfile cannot be opened for appending.)
>
> Hope this helps,
> Paul Lalli
>
>
so if carp was to return and error message it would get written to
/home/errs.txt
?

"R McGlue" <> wrote in message
news:ch21u2$omd$...
> Paul Lalli wrote:
>
> > my $logfile = '/home/errs.txt';
> > open STDERR, '>>', $logfile or die "Could not redirect STDERR: $!";
> >
> > (Note: Perl is smart enough to not lose track of the original STDERR
if
> > the open fails here, so the die message will still be printed to
> > wherever STDERR is pointing if $logfile cannot be opened for
appending.)
> >
> so if carp was to return and error message it would get written to
> /home/errs.txt
> ?

Any message printed to STDERR, including those printed by carp(), would
be printed to whatever file you named in $logfile (/home/errs.txt in
this case), yes.

Paul Lalli

Paul Lalli wrote:
> "R McGlue" <> wrote in message
> news:ch21u2$omd$...
>
>>Paul Lalli wrote:
>>
>>
>>>my $logfile = '/home/errs.txt';
>>>open STDERR, '>>', $logfile or die "Could not redirect STDERR: $!";
>>>
>>>(Note: Perl is smart enough to not lose track of the original STDERR
>
> if
>
>>>the open fails here, so the die message will still be printed to
>>>wherever STDERR is pointing if $logfile cannot be opened for
>
> appending.)
>
>>so if carp was to return and error message it would get written to
>>/home/errs.txt
>>?
>
>
> Any message printed to STDERR, including those printed by carp(), would
> be printed to whatever file you named in $logfile (/home/errs.txt in
> this case), yes.
>
> Paul Lalli
>
>
Right I'll elaborate a little more... I need to close STDERR if possible
as the script spawns multiple clients and servers which communicate with
each other via FIFO pipes. Its a fudged bit of code... but it works. I
need to close STDERR to minimise disk leakage. Aside from opening STDERR
and closing it around a carp or die command is there anyother way this
can be implemted more..... 'cleanly'

Ronan