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how to use expect - send to execute list of commands inside a file

 
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Old 02-05-2011
how to use expect - send to execute list of commands inside a file
Smiliehello people
i am working on some kind of PBX and i have list of telephone numbers inside a file, i have to insert these numbers into the correct command and then telnet to a remote server and execute these commands.
i can read the telephone numbers and insert them into the command with no problem, but when i try to insert these commands into the send i face problem. here is the basic code

#!/bin/bash
read msisdn < input
string="ZZZZ:MSISDN=$msisdn;"
/usr/bin/expect <<delim
spawn telnet 172.20.64.133
expect "ENTER USERNAME <"
send "user\r"
expect "ENTER PASSWORD <"
send "password\r\r"
expect "<"
send "$string \r"
expect "<"
expect eof
delim

i can make external loop inside the Bash which read the input file and issue the command and then telnet and execute, but this will make the script connects and disconnects again for each line which cause high load on that server and hardwar problem.
i am wondering if there is an option inside the expect interperter which makes the send read directly from a file... somthing like this:

expect "<"
send "input-filename \r"
expect "<"
expect eof

i appreciate if anyone can help. thanks.
 
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LEARN ABOUT OSF1

on

on(1)								   User Commands							     on(1)

NAME

       on - execute a command on a remote system with the local environment

SYNOPSIS

       on [-i] [-d] [-n] host command [argument] ...

DESCRIPTION

       The on program is used to execute commands on another system, in an environment similar to that invoking the program. All environment vari-
       ables are passed and the current working directory is preserved. To preserve the working directory, the working file system must be  either
       already	mounted  on the host or be exported to it. Relative path names will only work if they are within the current file system. Absolute
       path names may cause problems.

       The standard input is connected to the standard input of the remote command. The standard output and the standard  error  from  the  remote
       command are sent to the corresponding files for the on command.

OPTIONS

       The following options are supported:

       -d	Debug mode. Prints out some messages as work is being done.

       -i	Interactive mode. Uses remote echoing and special character processing. This option is needed for programs that expect to be talk-
		ing to a terminal. All terminal modes and window size changes are propagated.

       -n	No Input. This option causes the remote program to get EOF when it reads from the standard input, instead of passing the  standard
		input  from  the  standard  input of the on program. For example, -n is necessary when running commands in the background with job
		control.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWnfscu 		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       chkey(1), rlogin(1), rsh(1), telnet(1), attributes(5)

DIAGNOSTICS

       unknown host

	   Host name not found.

       cannot connect to server

	   Host down or not running the server.

       can't find

	   Problem finding the working directory.

       can't locate mount point

	   Problem finding current file system.

       RPC: Authentication error

	   The server requires DES authentication and you  do not have a secret key registered with keyserv. Perhaps you logged in without a pass-
	   word. Try to keylogin.  If that fails, try to set your publickey with chkey.

       on server: RPC: can't encode arguments

	   The 10240 byte limit for arguments to be encoded and passed from the sending to the receiving system has been exceeded.

       Other diagnostic messages may be passed back from the server.

BUGS

       When the working directory is remote mounted over NFS, a Control-Z hangs the window.

       Root cannot use on.

SunOS 5.10							    8 Oct 2003								     on(1)