Question

BASH shell script with Expect

Asked by: GR999

Hello all! I have been trying to put together a BASH script which uses Expect within the script. A parameter of another script gets passed to this BASH script, which then passes to the Expect script within. The problem is its not working. The parameter I beleive would get passed, but the Expect portion is failing. It seems to go into a constant loop with the second send command. It creates the stream but then tries again, and again.....never stops.

#!/bin/bash
 
VLCHOST="192.168.1.240 4212"
PASSWD=admin
DIR=/home/vlc/videos     
VIDEO=$1
 
expect -c "
spawn telnet $VLCHOST
expect {
Password: { send \"$PASSWD\r\"; exp_continue }
> { send \"new stream vod enabled\r\"; exp_continue }
> { send \"setup stream input $DIR$1\r\" }    
}
exit
"
exit
                                  
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Asked On
2007-12-15 at 10:49:23ID23025631
Tags

expect

,

script

,

bash

,

shell

Topics

Shell Scripting

,

TCL Scripting Language

Participating Experts
2
Points
500
Comments
3

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Answers

 

by: ahoffmannPosted on 2007-12-18 at 08:43:44ID: 20493431

I'd get rid of the bash wrapper and do it all in expect itself
simply convert your bash variables to tcl variables and use a hashbang line like
  #!/path/to/expect -c

 

by: omarfaridPosted on 2007-12-18 at 13:54:02ID: 20495908

If not mistaken, when you telnet to the remote m/c on port 4212 it is prompting you for something before password.

 

by: GR999Posted on 2007-12-19 at 17:18:03ID: 20504379

Thank you both for replying. I did find a way to finish the script within BASH, only to end up passing the wrong variable. I figured out how to pass using expect only variable (argv?) and it passes the same variable as the BASH. So I believe I am still going about it the wrong way. I am using SATGUI from www.satisoft.com . What I end up passing in either case ends up being the username I enter when I start the SATGUI server. I'm not sure what to do at this point, but I thank you both for the help.

20120131-EE-VQP-002

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