How To pass argument in Expect command?

jprathap · 08-22-2009, 01:00 AM

Hi all,

Could you plz tell me the syntax of passing the arguments in the expect script.

kris82 · 08-22-2009, 02:11 AM

to pass arguments into anything....

command [arguments]

but I think you are talking more like passing output into the command...

so, use a pipe...

command | expect.....

this takes command and feeds it into expect...

jprathap · 08-27-2009, 07:31 AM

Hi

I have script like this

#!/usr/bin/expect -f
spawn ssh user@192.168.2.3
expect "password: "
send "mypassword\r"
interact

My doubt is how to get the password as an argument . In this script. Is there way to get the argument like in shell ( $1).

rnturn · 08-27-2009, 04:58 PM

Quote:

Originally Posted by jprathap

My doubt is how to get the password as an argument . In this script. Is there way to get the argument like in shell ( $1).

The simplest way would be to change your script to:

Code:

#!/usr/bin/expect -f

set mypassword [lindex $argv 0]

spawn ssh user@192.168.2.3
expect "password: "
send "$mypassword\r"
interact

If you want to pass additional arguments, they would be accessible using additional lines:

Code:

set arg2 [lindex $argv 1]
set arg3 [lindex $argv 2]

and so on.

Good luck.

--
RT