http://qs321.pair.com?node_id=11116134


in reply to Divert STDOUT temporarily

The documentation for open provides an example of duplicating and restoring filehandles:

#!/usr/bin/perl open(my $oldout, ">&STDOUT") or die "Can't dup STDOUT: $!"; open(OLDERR, ">&", \*STDERR) or die "Can't dup STDERR: $!"; open(STDOUT, '>', "foo.out") or die "Can't redirect STDOUT: $!"; open(STDERR, ">&STDOUT") or die "Can't dup STDOUT: $!"; select STDERR; $| = 1; # make unbuffered select STDOUT; $| = 1; # make unbuffered print STDOUT "stdout 1\n"; # this works for print STDERR "stderr 1\n"; # subprocesses too open(STDOUT, ">&", $oldout) or die "Can't dup \$oldout: $!"; open(STDERR, ">&OLDERR") or die "Can't dup OLDERR: $!"; print STDOUT "stdout 2\n"; print STDERR "stderr 2\n";

Dave