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Expect/Tcl help?


 
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# 1  
Old 07-25-2007
Expect/Tcl help?

Does anyone know of an expect/tcl forum that is as helpful as this one is for shell scripting?

Or if anyone has any expect knowledge, can you please provide some guidance on how to write to a local error log based on output from a ssh session?
I have something like this:
Code:
foreach host $hostlist {
spawn ssh -oPort=22 -oStrictHostKeyChecking=no -oCheckHostIP=no $USER@$host-sdp
expect {
  "Connection closed by remote host" { puts "$host is down.  Please try again later."; continue }
  "password:" { send "$PASSPH\r" }

If they first condition is matched and it sends the message about the host being down, I'd like to output the error to an errorlog.

How do I a.) initialize the log file and b.) write to it in the case of an error?

Thanks for any help. Again, I realize this isn't the forum for expect/tcl, but it has been very helpful to me in the past in learning shell scripting, so hopefully someone can provide some insight or at least point me in the right direction.
# 2  
Old 07-26-2007
See if this will satisfy your needs.
Actually, I haven't done this so far, but looks interesting to me, so here's what I found :
Code:
log_file -a "/tmp/expect-ssh"
send_log "this is for the log test"

I guess this is what your looking for. HTH.

Last edited by sysgate; 07-26-2007 at 11:45 AM..
# 3  
Old 07-26-2007
Quote:
Originally Posted by sysgate
See if this will satisfy your needs.
Actually, I haven't done this so far, but looks interesting to me, so here's what I found :
Code:
log_file -a "/tmp/expect-ssh"
send_log "this is for the log test"

I guess this is what your looking for. HTH.
Hey sysgate... I had found this log_file a little after posting this. I think it's definitely the right track. I'll play with it some today. I'd like to find a way to put the actually error message to log (as opposed to my echo'ed line.) I think in Expect I need to have the file open as well.

Thanks for the reply... I'll get it eventually Smilie
 

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