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Full Discussion: How to use 'expect' to pass UID & Password to a "for loop" in shell script?
Top Forums Shell Programming and Scripting How to use 'expect' to pass UID & Password to a "for loop" in shell script? Post 302873695 by Chubler_XL on Tuesday 12th of November 2013 07:06:15 PM
Old 11-12-2013
I haven't found file I/O to be flaky in expect, but I must admit I only really use expect to test solutions posted in the forum. I find it a bit of a hacking tool and would prefer to use passwordless ssh for my own work.

The below script should open the server_list file, connect to each server run the configured command ("multibos -S" in this case) and log the output to a file name config_details with a "hostname:" prefix.

Also note: I'm using telnet in this script and you may want ssh or some other command.

Uncomment the log_user 0 line to suppress output once you have finished debugging.

Code:
#!/usr/bin/expect -f
set timeout 2
set u "souvikm"
set p "passw0rd"
set command "multibos -S"

set hosts [open server_list r]
set config [open config_details w]

#log_user 0

while {[gets $hosts host] >= 0} {
    spawn -noecho telnet $host
    expect "*User_ID*"
    send -- "$u\r"
    expect "?assword*"
    send -- "$p\r"
    send "PS1='PROMPT# '\r"
    expect -re "PROMPT# '(.*)PROMPT# "
    send "$command\r"
    expect -re "\r\n(.*)\r\n(.*)PROMPT# "
    set output $expect_out(1,string)
    puts $config "$host: $output\r"
    send "exit\r"
    expect eof
}
close $hosts
close $config

Last edited by Chubler_XL; 02-25-2017 at 02:26 PM..
 

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LEARN ABOUT SUSE

send-nntp

SEND-UUCP(8)						      System Manager's Manual						      SEND-UUCP(8)

NAME

       send-nntp, send-ihave - send Usenet articles to remote site

SYNOPSIS

       send-nntp [ -d ] sitename:hostname | sitename [ sitename:hostname | sitename ..	]

       send-ihave [ -d ] sitename:hostname | sitename [ sitename:hostname | sitename ..  ]

DESCRIPTION

       The send-* utilities are scripts that process the batch files written by innd(8) to send Usenet articles to a remote NNTP site.

       The sites to be fed may be specified by giving sitename hostname pairs on the command line.

       The sitename is the label the site has in the newsfeeds file, the hostname is the real hostname of the remote site, a FQDN (Fully Qualified
       Domain Name).  Normally, the sitename and the hostname are the same, and as such don't have to be specified as sitename:hostname pairs  but
       just as a sitename.

       send-nntp starts an innxmit to send the articles to the remote site.

       send-ihave  encapsulates  the articles in an ihave control message and uses inews to send the articles to a to.sitename pseudo-group. Using
       send-ihave is discouraged, nobody uses it anymore and even the author of this manpage is unsure as to how it  actually  works  or  used	to
       work.

       send-*  expect  that  the batchfile for a site is named <pathoutgoing in inn.conf>/sitename.  To prevent batchfile corruption, shlock(1) is
       used to ``lock'' these files.

OPTIONS

       -d     The ``-d'' flag causes nntpsend to send output to stdout rather than the log file <pathlog in inn.conf>/<program-name>.log.

NOTES

       You should probably not use send-nntp, but innfeed, or if that is not possible, nntpsend.

       The usual flags for a batch file for send-nntp are ``Tf,Wfm''.

SEE ALSO

       newsfeeds(5), nntpsend(8)

																      SEND-UUCP(8)
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