Ah, I think I found the source of the problem:
Your login script runs the "resize" command. It finds out the terminal's geometry by sending an escape sequence to the terminal and parsing the response. Instead of the response it reads the "exit" command, which is not understood by "resize".
Can you comment out the resize command and try again?
{
sleep 2
echo "$user"
sleep 2
echo "$password"
sleep 2
echo " ls"
sleep 10
echo "exit"
}| telnet $server
I have a machine x and i have executed the above script on machine 'x'.
i entered the... (6 Replies)
Hi,
I have logged into a system using Telnet and iam unable to close the connection to connect to the next system using arrays.
Iam getting error "Connection Timed Out"
Iam using net::Telnet module.
Please suggest.. (1 Reply)
I am using a shell script to telnet into a remote unix server and execute certain commands. But if any command being executed remotely, throws an error, the script just hangs. And the telnet session does not get closed.
I want to be able to close the session and complete the script execution in... (1 Reply)
i need a command to close telnet session wen login incorrect..i want to embed it into my perl script for telnet to check for login incorrect error. (2 Replies)
Our network administrators implemented some sort of check to kill idle sessions and now burden is on us to run some sort of keep alive. Client based keep alive doesn't do a very good job. I have same issue with ssh. Does solution 2 provided above apply for ssh sessions also? (1 Reply)
Hi all,
I am currently running a daemon which creates a virtual terminal for testing purposes. Essentially, if I were to interact with it manually, this is what I get.
john@test1:~$telnet localhost 7777
Trying ::1...
Connected to localhost.
Escape character is '^]'
mip6d> pl
eth2... (6 Replies)
I would like to create the following script:
run a python script with setsid
python may or may not fail with exception
check if all of the group processes were terminated correctly
if not, kill the remaining processes
How can I do that?
Thanks a lot (3 Replies)
I have to put together telnet instructions for 100s of hosts for verifying basic connectivity and get output in a neat format.
Problem- If a telnet is hung with message "Trying .... <hostname" due to firewall or routing issue the commands waits for a very long time before it times out and my... (2 Replies)
Discussion started by: desiphantom
2 Replies
LEARN ABOUT CENTOS
telnet-probe
TELNET-PROBE(1) General Commands Manual TELNET-PROBE(1)NAME
telnet-probe - lightweight telnet-like port probe
SYNOPSIS
$PCP_BINADM_DIR/telnet-probe [-c] [-v] host port
DESCRIPTION
telnet-probe allows the pmdashping(1) daemons to establish connections to arbitrary local and remote service-providing daemons so that
response time and service availability information can be obtained.
The required host and port number arguments have the same meaning as their telnet(1) equivalents.
The -c option causes telnet-probe to perform a connect(2) only. This skips the read(2) and write(2) exercise that would otherwise be done
after connecting (see below).
The -v option causes telnet-probe to be verbose while operating.
Once the telnet connection has been established, telnet-probe reads from stdin until end-of-file, and writes all the input data to the tel-
net connection. Next, telnet-probe will read from the telnet connection until end-of-file, discarding whatever data it receives. Then
telnet-probe exits.
To operate successfully, the input passed via telnet-probe to the remote service must be sufficient to cause the remote service to close
the connection when the last line of input has been processed, e.g. ending with ``quit'' when probing SMTP on port 25.
By default telnet-probe will not produce any output, unless there is an error in which case a diagnostic message can be displayed (in ver-
bose mode only) and the exit status will be non-zero indicating a failure.
PCP ENVIRONMENT
Environment variables with the prefix PCP_ are used to parameterize the file and directory names used by PCP. On each installation, the
file /etc/pcp.conf contains the local values for these variables. The $PCP_CONF variable may be used to specify an alternative configura-
tion file, as described in pcp.conf(5).
DIAGNOSTICS
If telnet-probe succeeds, then 0 will be returned. If the attempt to establish a connection fails or is terminated, then a non-zero exit
status is returned.
SEE ALSO PCPintro(1), pmdashping(1), pmie(1), telnet(1), connect(2), read(2) and write(2).
Performance Co-Pilot PCP TELNET-PROBE(1)