send "Ctrl ]" to the remote system

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SebMuller - 26 Aug 2003 16:00 GMT

Hi,

I am using the telnet module (Telnet.pm) in order to automate some
unix-sessions.
It works so far great, but during the telnet session I would like to
send the escape character ("Ctrl ]") to the remote system.
How shall I encode "Ctrl ]"?

Thanks, Sebastian

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Brian McCauley - 26 Aug 2003 17:39 GMT

> I am using the telnet module (Telnet.pm) in order to automate some
> unix-sessions.
> It works so far great, but during the telnet session I would like to
> send the escape character ("Ctrl ]") to the remote system.
> How shall I encode "Ctrl ]"?

There is no need to encode it in any special way.

I suspect you are confused. The Ctrl-] character is not special in
the telnet connection.

The Ctrl-] character is special in the stream between a controlling
terminal and the Unix telent program. But you are not using the Unix
telnet program.

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\\ ( )
. _\\__[oo
.__/ \\ /\@
. l___\\
# ll l\\
###LL LL\\

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SebMuller - 27 Aug 2003 07:45 GMT

> > I am using the telnet module (Telnet.pm) in order to automate some
> > unix-sessions.
[quoted text clipped - 10 lines]
> terminal and the Unix telent program. But you are not using the Unix
> telnet program.

You are absolutely right. Actually the question is: What has to be
send to make the remote system (Unix) execute the command Ctrl-A or
Ctrl-C etc.
Because $t->cmd("Ctrl-A") won't do it (see below).
Perhaps ASCII code?
----------------------------------------------------------------
use Net::Telnet();
$t = new Net::Telnet (-timeout => 10, -prompt => '/$prompt $/');
...
@lines = $t->cmd("Ctrl-A");
----------------------------------------------------------------

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Webmaster Forum / Perl / Modules / August 2003

send "Ctrl ]" to the remote system