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qwurx [shmem] ~> perl -e 'open my $fh,"|-","ssh localhost"; while(<STD
+IN>){print $fh $_}'
Pseudo-terminal will not be allocated because stdin is not a terminal.
...
qwurx [shmem] ~> ls -lrt | tail -2 <--- after perl terminated
-rw-r--r--  1 shmem shmem         0 Mar 15 18:30 blorflydick
-rw-r--r--  1 shmem shmem         0 Mar 15 18:30 gobbledygook

my @fh;
for my $ip (@ips) {
...
        print $fh $_;
    }
}

    open my $fh,"|-","ssh $ip >/dev/null 2>&1" or die "Can't ssh to $i
+p: $!\n";