I've asked this on their mailing list, but it's not very active, so posting here... My Net::SSH::Perl-using script hangs for at least five minutes (maybe forever?) when the number of characters in the command is large. 
    #!/usr/bin/perl
    use strict;
    use Net::SSH::Perl;
     
    my $host = "blah";
     
    my $ssh = Net::SSH::Perl->new(
            $host,
            debug => 1,
            options => [
                    "BatchMode yes",
                    "PasswordAuthentication no",
                    "ConnectTimeout 15",
            ]
    );
     
    $ssh->login("root")
            or die "Failed to login: $!\n";
     
    my $cmd = "echo ";
    $cmd = "."x50000;
     
    my ($stdout, $stderr, $exit) = $ssh->cmd($cmd);
    die "Failed!\n"
            unless ($exit == 0);
    print "$stdout\n";

[download]
Chang 50000 to 20000 and it will work. Same problem on all hosts I tested against. Can anyone help me understand why?

In reply to Net::SSH::Perl doesn't like long commands by pattyj

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