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Full Discussion: Expect script error : send: spawn id exp4 not open
Top Forums Shell Programming and Scripting Expect script error : send: spawn id exp4 not open Post 302973397 by Corona688 on Tuesday 17th of May 2016 11:16:11 AM
Old 05-17-2016
We are not "on call". If someone doesn't answer your question immediately, and you have no further information to provide, wait! I didn't get here just because you bumped it.

"spawn id exp4 not open" is the message expect gives when the thing you're communicating with, telnet in this case, dies while you're trying to use it. Try telneting to that IP / port manually and see what it does.

Your shell script can probably be made far more efficient -- you don't need the help of head, tail, and cut to read and tokenize lines from a file one by one, there's a command just for that.

Code:
while read ip port
do
        echo "$ip $port"
done < /tmp/DSlist

This User Gave Thanks to Corona688 For This Post:
omkar.jadhav
 

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LEARN ABOUT DEBIAN

tcplisten

TCPCONNECT(1)						      General Commands Manual						     TCPCONNECT(1)

NAME

       tcplisten - general TCP/IP server

SYNOPSIS

       tcplisten [-irv] [localaddr] port

DESCRIPTION

       tcplisten  waits  for  a  TCP/IP connection on port.  If a localaddr parameter is given, tcplisten will bind to that IP address.  Otherwise
       tcplisten will accept connections to any of the local machines IP addresses.  Data received from the client is printed on standard  output,
       and  data  read	from  standard input is sent to the client.  When end-of-file is reached on both standard input and the TCP/IP connection,
       tcplisten terminates.

OPTIONS

       -i     Terminate at end-of-file on standard input; don't wait for the client to close the connection.

       -r     Terminate when the remote client closes the connection; don't wait for end-of-file on standard input.

       -v     Verbose mode.  Prints a message to standard error about the origins (host and port) of the client.

SEE ALSO

       tcpconnect(1), telnet(1), mini-inetd(1), tcpbug(1).

BUGS

       The names of the options are not yet finalized, and may change at a future release.

								   1997 April 13						     TCPCONNECT(1)
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