Perl:将STDOUT重定向到两个文件

Question

如何STDOUT在我的Perl脚本中将流重定向到两个文件(重复项)？目前我只是流入一个日志文件:

open(STDOUT, ">$out_file") or die "Can't open $out_file: $!\n";

我需要改变什么？谢谢.

Answer 1

你也可以使用IO::Tee.

use strict;
use warnings;
use IO::Tee;

open(my $fh1,">","tee1") or die $!;
open(my $fh2,">","tee2") or die $!;

my $tee=IO::Tee->new($fh1,$fh2);

select $tee; #This makes $tee the default handle.

print "Hey!\n"; #Because of the select, you don't have to do print $tee "Hey!\n"

是的,输出有效:

> cat tee1
Hey!
> cat tee2
Hey!