Perl Net::Telnet3.03
## Main program. {my ($pty, $ssh, @lines);
my $host = "changeme";
my $user = "changeme";
my $password = "changeme";
my $prompt = '/changeme:~> $/';
## Start ssh program.
$pty = &spawn("ssh", "-l", $user, $host);# spawn() defined below
## Create a Net::Telnet object to perform I/O on ssh's tty.
use Net::Telnet;
$ssh = new Net::Telnet (-fhopen => $pty,
-prompt => $prompt,
-telnetmode => 0,
-cmd_remove_mode => 1,
-output_record_separator => "\r");
## Login to remote host.
$ssh->waitfor(-match => '/password: ?$/i',
-errmode => "return")
or die "problem connecting to host: ", $ssh->lastline;
$ssh->print($password);
$ssh->waitfor(-match => $ssh->prompt,
-errmode => "return")
or die "login failed: ", $ssh->lastline;
## Send command, get and print its output.
@lines = $ssh->cmd("who");
print @lines;
exit;
} # end main program
sub spawn {
my(@cmd) = @_;
my($pid, $pty, $tty, $tty_fd);
## Create a new pseudo terminal.
use IO::Pty ();
$pty = new IO::Pty
or die $!;
## Execute the program in another process.
unless ($pid = fork) {# child process
die "problem spawning program: $!\n" unless defined $pid;
## Disassociate process from existing controlling terminal.
use POSIX ();
POSIX::setsid
or die "setsid failed: $!";
## Associate process with a new controlling terminal.
$tty = $pty->slave;
$tty_fd = $tty->fileno;
close $pty;
## Make stdio use the new controlling terminal.
open STDIN, "&$tty_fd" or die $!;
open STDERR, ">&STDOUT" or die $!;
close $tty;
## Execute requested program.
exec @cmd
or die "problem executing $cmd\n";
} # end child process
$pty;
} # end sub spawn
页:
[1]