/usr/share/doc/libnet-openssh-perl/examples/expect.pl is in libnet-openssh-perl 0.60-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | #!/usr/bin/perl
use strict;
use warnings;
use Net::OpenSSH;
use Expect;
select STDOUT; $| = 1;
select STDERR; $| = 1;
my $password = $ARGV[0];
my $timeout = 20;
my $debug = 0;
my $ssh = Net::OpenSSH->new('test@127.0.0.1', password => $password);
# my ($pty, $pid) = $ssh->open2pty("sudo cat /etc/shadow")
# After a successful sudo operation, it doesn't request the password
# again until some time after, handling this undeterministic behaviour
# is a pain in the ass, so we just clear any cached credentials
# calling "sudo -k" first as follows:
my ($pty, $pid) = $ssh->open2pty("sudo -k; sudo cat /etc/shadow")
or die "open2pty failed: " . $ssh->error . "\n";
my $expect = Expect->init($pty);
$expect->raw_pty(1);
$debug and $expect->log_user(1);
$debug and print "waiting for password prompt\n";
$expect->expect($timeout, ':')
or die "expect failed\n";
$debug and print "prompt seen\n";
$expect->send("$password\n");
$debug and print "password sent\n";
$expect->expect($timeout, "\n")
or die "bad password\n";
$debug and print "password ok\n";
while(<$pty>) {
print "$. $_"
}
|