I have written a small expect script which should spawn a telnet session login and execute some commands.
Now I have got the following problem..................
If the telnet service is not running on the server, I would like to see the script to fail, but the script still carrys on to execute the commands, even it is not logged in?????
How can I stop this please?
---------- Post updated at 09:43 AM ---------- Previous update was at 05:55 AM ----------
Just in case someone else has the same problem.
I could sort it with
Last edited by DukeNuke2; 08-05-2009 at 11:46 AM..
Reason: added code tags
Somewhat long story:
I have a simple Perl CGI script that uses Expect to Telnet to a device and grab some data, and then spits it back to Perl for display on the Webpage.
This works for many devices I've tried, but one device just fails, it keeps rejecting the password on this device, only... (1 Reply)
I am using Expect to spawn a command that loops through a text file and runs the same command for each item in the text file.
The text file, named stat.txt looks something like this:
2007-04 alist 543
2008-07 blist 543
2008-03 xlist 345
2008-03 ylist 675
2003-03 zlist 567
The expect... (1 Reply)
So here is what I am trying to do. I have a large # of switches and routers I am trying to log into. Unfortunately some have ssh only, some have telnet only. and some i have never logged into with ssh. I first want it to SSH, if i have never logged into the box it will ask for adding the ssh key. I... (0 Replies)
I must automatically monitor and manage a large number of boxes on our network.
I have been using perl/Net::Telnet and expect/telnet and also perl/ssh and expect/ssh to reach the command line of the remote boxes. Scripts are working but slow.
(Yes, I do use SNMP also but many boxes do not... (2 Replies)
Hi All,
I am trying to write a expect script to telnet and run a command on a remote host.The command i want to send contains a text value is contained in file.txt in the linux box from where i am running the expect script.I want to pass the contains of file.txt into a variable and call the... (1 Reply)
Hi all,
I am currently running a daemon which creates a virtual terminal for testing purposes. Essentially, if I were to interact with it manually, this is what I get.
john@test1:~$telnet localhost 7777
Trying ::1...
Connected to localhost.
Escape character is '^]'
mip6d> pl
eth2... (6 Replies)
I've got some expect/tcl scripts.
Now i want to add a function that allows to open a telnet connection and redirect the output to a logfile.
On the shell/terminal i tried something like:
'telnet 192.168.123.123 12121 > /home/user/logging/log-telnet.log'
and the telnet is redirected into the... (2 Replies)
Dear experts, please help me .
I've found simple EXPECT scripts and all works fine. But I need more automation in error handling and sending list of commands/output logging from multiple remote hosts.
I have 10 hosts, for example:
host1 192.168.1.1 LOGIN1 PASSWORD1
...... ... (2 Replies)
Hi All,
I have an Expect script which logs into Cisco switch, performs a show interface command. I want to read a file of ip addresses which will be passed to the expect script.
The script to read the file works, the expect script works on it's own but when i call the 'expect' script from the... (12 Replies)
hi, please help, keep getting this bolded error and look it up and people say
its your environment variable though i tried to set it manually in expect..it run fine if i run it manually but once i run it by cronjob it error below..i tried to comment out ip/login info with *..
logfile::
START... (0 Replies)
Discussion started by: cssanangeles
0 Replies
LEARN ABOUT PLAN9
con
CON(1) General Commands Manual CON(1)NAME
con, telnet, cu, rx, xms, xmr - remote login, execution, and XMODEM file transfer
SYNOPSIS
con [ -dCrvs ] [ -l [ remuser ] ] [ -c cmd ] [net!]machine
telnet [ -dCrn ] [net!]machine
cu number
rx [ -n ] [net!]machine [ command-word ... ]
xms file
xmr file
DESCRIPTION
Con connects to the computer whose network address is net!machine and logs in if possible. With no options, the account name used on the
remote system is the same as that on the local system. Standard input and output go to the local machine.
Options are:
-l with an argument causes remuser to be used as the account name on the remote system. Without an argument this option disables auto-
matic login and a normal login session ensues.
-C forces cooked mode, that is, local echo.
-c runs cmd as if it had been typed as a command from the escape mode. This is used by cu.
-v (verbose mode) causes information about connection attempts to be output to standard error. This can be useful when trying to debug
network connectivity.
-d causes debugging information to be output to standard error.
-r suppresses printing of any carriage return followed by a new line. This is useful since carriage return is a printable character in
Plan 9.
-s strips received characters to 7 bits to forestall misinterpretation of ASCII with parity as UTF.
The control- character is a local escape. It prompts with the local machine name and >>>. Legitimate responses to the prompt are
i Send a quit [sic] signal to the remote machine.
q Exit.
b Send a break.
. Return from the escape.
!cmd Run the command with the network connection as its standard input and standard output. Standard error will go to the screen. This
is useful for transmitting and receiving files over the connections using programs such as xms.
Telnet is similar to con, but uses the telnet protocol to communicate with the remote machine. If standard input is a file or a pipe, the
-n option causes telnet not to hang up the connection when it receives EOF on its standard input; instead it waits for the remote end to
hang up. It shares con's -C, -d, and -r options.
Cu is a shell script that uses telco(4) and con to connect to a machine via a modem. If the machine is equipped with a local modem, it is
used. Otherwise, the call is placed through Datakit.
Rx executes one shell command on the remote machine as if logged in there, but with local standard input and output. A rudimentary shell
environment is provided. If the target is a Plan 9 machine, $service there will be rx.
Network addresses for both con and rx have the form network!machine. Supported networks are those listed in /net.
The commands xms and xmr respectively send and receive a single file using the XMODEM protocol. They use standard input and standard out-
put for communication and are intended for use with con.
EXAMPLES
rx kremvax cat file1 >file2
Copy remote file1 to local file2.
rx kremvax cat file1 '>file2'
Copy remote file1 to remote file2.
eqn paper | rx kremvax troff -ms | rx deepthought lp
Parallel processing: do each stage of a pipeline on a different machine.
SOURCE
/sys/src/cmd/con
for con, xms, and xmr.
/sys/src/cmd/ip
for telnet.
/rc/bin/cu
BUGS
Under rx, a program that should behave specially towards terminals may not: e.g., remote shells will not prompt. Also under rx, the remote
standard error and standard output are combined and go inseparably to the local standard output.
CON(1)