2009/6/23 <pa...@compugenic.com>:
> I have a script which runs mostly via a cron job and sometimes interactively.
> I would like STDERR to automatically print to both the console and to a
> logfile simultaneously.
>
> Right now I've gotten as far as merging both file handles with IO::Tee but
> I'm not sure if I'm heading down the right path.
> my $merged_stderr = IO::Tee->new( \*STDERR, new IO::File(">>$errlog") );
>
> This only works when explicitely naming the file handle in a print statement.
> How can I take it to the next step, which is to have STDERR automatically
> print to that file handle?
>
>
Hi,
What causes writting of STDERR?
If it's due to die and warn, you could redirect them to the customized routines.
Something like:
$SIG{__DIE__}=\&log_die;
$SIG{__WARN__}=\&log_warn;
sub log_die
{
my $time=scalar localtime;
open (HDW,">>",$err_log);
my $old=select HDW;$|=1;select $old;
print HDW $time," ",@_;
close HDW;
die @_;
}
sub log_warn
{
my $time=scalar localtime;
open (HDW,">>",$err_log);
my $old=select HDW;$|=1;select $old;
print HDW $time," ",@_;
close HDW;
}
--
In this magical land, everywhere
is in full bloom with flowers of evil.
- Jeff Pang (CN)
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