Expect Script Strangeness - UNIX for Advanced & Expert Users

mark007 · #1 09-02-2008

Hi all,

I am trying to use a very simple expect script to automate entering one or two details into a console connection of a solaris machine so that I can do a boot net - install.

If I run the console connection script manually myself, it connects fine and when I hit enter, I am on the machine and can log in etc.

Problem is, when I spawn this exact same command from within expect, the connection seems to work but when I hit enter, nothing

Code:

spawn /console/conn.sh machinename
sleep 15
expect "Connected to"
send ""
expect "telnet>"
send "send break\r\r"
expect "ok"

What might be different about spawn, than running script from the command line.

sysgate · #2 09-02-2008

You don't need double \r\r statement, one carriage return is OK, also, set the timeout to indefinite with : set timeout -1
Your machine may be experiencing slow responses, so rule that out. You can also try autoexpect too that comes with the expect installation.

ramen_noodle · #3 09-03-2008

Sysgate is right on. A couple things I'd do would be too add a debug option to the script...

Code:

if {[lsearch -exact $argv "-debug"] >= 0} {exp_internal 1 ; log_user 1}

..and instead of sending whitespace, send a newline.

HTH

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