CODEWITHSUNDEEP
perlprintingstdout
Ian
Ian

Reputation: 501

How can I read an output from a while true process in console?

For the code

my $ssh = Net::SSH::Perl->new($host);
$ssh->login($user, $pass);
my($stdout, $stderr, $exit) = $ssh->cmd($cmd);
print "STDOUT: $stdout STDERR: $stderr EXIT: $exit";

If my $cmd is "ls", then $stdout can have a correct output.

However, if my $cmd is "perl whileTrue.pl", then how can I have the output while running the perl? In whileTrue.pl, it will print my input in console.

Because if I not ssh to run it, the output will print to the console. However, when I ssh it, I cannot see my output until I really end this process.

Can I have something like flush concept?

Upvotes: 0

Views: 303

Answers (2)

salva
salva

Reputation: 10244

You can also use Net::OpenSSH instead of Net::SSH::Perl:

use Net::OpenSSH;
my $ssh = Net::OpenSSH->new($host, user => $user, password => $pass);
$ssh->system($cmd);

Upvotes: 0

bvr
bvr

Reputation: 9697

Seems like register_handler method allows for non-blocking processing of the output.

Upvotes: 1

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