Beefy Boxes and Bandwidth Generously Provided by pair Networks
XP is just a number
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??
I've got a perl script that automatically logs me via ssh by spawning ssh with Expect.pm. It actually works pretty well and here is my ouput :
$ ngh bestServerEver GPG Pass : root@**********'s password: Linux **** 2.6.32-042stab059.7 #1 SMP Tue Jul 24 19:12:01 MSK 2012 x86 +_64 GNU/Linux motd!!!!!!!!!! Last login: Mon Feb 4 22:18:10 2013 from ******************* bash [root@******:~]$ bash [root@******:~]$
I'm trying to suppress this output to get to the server shell directly after typing my command. Like that :
$ngh BestServerEver root@server#
I've tried that answer :

http://stackoverflow.com/questions/1376607/how-can-i-suppress-stdout-temporarily-in-a-perl-program

I've also tried :
local (*OUT, *ERR); open OUT, ">&STDOUT"; open ERR, ">&STDERR"; close STDOUT; close STDERR; print "don't print"; open STDOUT, ">&OUT"; open STDERR, ">&ERR";
Both are okay when it's about standard STDOUT but Expect seems to be a different kind of handle or whatever. I've also tried setting :
$exp->stty("-echo");
But it did not hide anything Finally, here is the sub that spawns ssh

http://pastebin.com/pSL3AwBW <-- with color!

if you have some tips to give me on how to hide that junk :p
sub interactiveSsh { my ($pConfig,$pass)=@_; my $exp = new Expect; $exp->slave->clone_winsize_from(\*STDIN); $exp->spawn("ssh root\@".$pConfig->{'host'}); my $spawn_ok; $exp->expect(40, [ qr'(yes/no)', sub { my $fh = shift; $fh->send("yes\n"); exp_continue; } ], [ qr'assword:', sub { if ($spawn_ok) { $exp->interact(); } my $fh = shift; $fh->send("$pass\n"); $spawn_ok=1; exp_continue; } ], [ qr'#', sub { my $fh = shift; $fh->send("bash\n"); $exp->send("stty -echo\n"); $exp->interact(); exp_continue; } ], [ eof => sub { if ($spawn_ok) { print BOLD GREEN, "SSH + close connexion to ".$pConfig->{'host'}.".\n", RESET; exit 0; } else { die "ERROR: could not +spawn ssh.\n"; } } ], [ timeout => sub { die "No login.\n"; } ], '-re', qr'[#>:] $', ); $exp->interact();

In reply to hiding Expect output by AzryelRyvel

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others imbibing at the Monastery: (4)
As of 2024-04-19 03:38 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found