Question

I am writing a script that executes a command remotely via SSH using perl. Timeout can happen when
a) SSH client is unable to connect
b) SSH client is able to connect but the remote command takes a lot longer (say > 5 minutes) to execute

For (a), theren is an option available in ssh client. For (b), I cannot find anything.
Thanks for any inputs

Answer 1

use Net::OpenSSH:

my $ssh = Net::OpenSSH->new($host, kill_ssh_on_timeout => 1, timeout => 5);
my $output = $ssh->capture({tty => 1, timeout => 300}, $cmd);

Though, read the entry about timeouts on the module docs.