How send EOF to process in Expect script?

[Oleksandr Gavenko (aka gavenkoa)]

I want finish interaction with external process in Expect script.

Look to example:

spawn cat
expect_background -re ".+" {
send_user $expect_out(0,string)
}
exp_send "Hello World\n"
sleep 1 ;# XXXXX

Without 'sleep' command I don't get response from 'cat' utility as (I
think) expect script
finish working.

With 'close' command before 'sleep' I also does not get message form
'cat' as (I think)
'cat' process destroyed and Expact don't wait for it output.

I try modify script to

spawn cat
expect_background -re ".+" {
send_user $expect_out(0,string)
} eof {
send_user $expect_out(0,string)
}
exp_send "Hello World\n"
close
sleep 1

but it also don't work.

How get final output from external process?

[Bezoar]

On Sep 12, 12:53 am, "Oleksandr Gavenko (aka gavenkoa)"

End sends with \r not \n
Likely need to enter event loop for background expect to respond to
events.
e.g. vwait forever
Where
forever is a variable.
To get cat to exit send cntrl-d which ibelieve is /04> How get final
output from external process?

[Oleksandr Gavenko (aka gavenkoa)]

On 14 сен, 06:54, Bezoar <cwjo...@gmail.com> wrote:
> On Sep 12, 12:53 am, "Oleksandr Gavenko (aka gavenkoa)"

> > I want finish interaction with external process in Expect script.
>
> > Look to example:
>
> > spawn cat
> > expect_background -re ".+" {
> > send_user $expect_out(0,string)}
>
> > exp_send "Hello World\n"
> > sleep 1 ;# XXXXX
>
> > Without 'sleep' command I don't get response from 'cat' utility as (I
> > think) expect script
> > finish working.
>
> > With 'close' command before 'sleep' I also does not get message form
> > 'cat' as (I think)
> > 'cat' process destroyed and Expact don't wait for it output.
>
> > I try modify script to
>
> > spawn cat
> > expect_background -re ".+" {
> > send_user $expect_out(0,string)} eof {
>
> > send_user $expect_out(0,string)}
>
> > exp_send "Hello World\n"
> > close
> > sleep 1
>
> > but it also don't work.
>
> End sends with \r not \n

OK, I already learn this...

> Likely need to enter event loop for background expect to respond to
> events.
> e.g. vwait forever
> Where
> forever is a variable.

Please write more clear. I don't understand...

> To get cat to exit send cntrl-d which ibelieve is /04

Good point. I already learn this tecniques... Look to my example:

stty raw
expect {
-i $mult3_id -re "(\[0-9]+)\r" {
puts "xxx $expect_out(1,string) xxx"
if { [expr $expect_out(1,string) != 4] } {
send -i $div2_id "$expect_out(1,string)\r"
exp_continue
}
}
-i $div2_id -re "(\[0-9]+)\r" {
puts "yyy $expect_out(1,string) yyy"
send -i $mult3_id "$expect_out(1,string)\r"
exp_continue
}
-i $user_spawn_id \x0c { }
}
stty -raw

send -i $div2_id \x04
send -i $mult3_id \x04
wait


But is I set

set stty_init "raw"

I can not do

send -i $div2_id \x04

any more, so I need

exec kill [exp_pid -i $div2_id]