I found that some of the commands I was running over ssh (from Windows to an HP-UX system) were returning early from the read loop (and terminating the command), so I had to add extra code for executing and reading the results. This was part of a larger module, but the relevant method was: sub cmd {
my $self = shift;
my $cmd = shift;
my $ssh = $self->{ssh};
my $ch = $self->{ch};
unless ($ch) {
$self->{ch} = $ch = $ssh->channel;
$ch->ext_data('merge');
$ch->blocking(0);
$ch->shell();
1 while <$ch>;
}
print $ch "$cmd\n";
select(undef, undef, undef, 0.2);
print $ch "print SSH2_cmd_done\n";
select(undef, undef, undef, 0.2);
my @output;
READ_LOOP: while (1) {
local $_;
while (<$ch>) {
last READ_LOOP if /^SSH2_cmd_done/;
push @output, $_;
}
sleep 1;
}
return @output;
}
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