About expect shell with rsh

#!/bin/bash
  ip=1
  
  while [ $ip -lt 255 ]
  do
    echo "#####################################---$ip">>statusinfo
  
    echo "------------------username:">>statusinfo
    echo "hadoop">>statusinfo
    echo "------------------ip:">>statusinfo
    echo "192.168.150.$ip">>statusinfo
    echo "------------------hostname:">>statusinfo
  
    expect -c " 
      set timeout 25
      expect *
      spawn rsh 192.168.150.$ip -l hadoop hostname>>statusinfo
      expect "password"
      send "hadoop\r"
    "
    sleep 2
    ip=`expr $ip + 1`
  
  done

My goal is through a cycle , access to 150 segments of all the machine's host name and the corresponding ip address, via rsh remote machine , the hostname command and then redirect the results to the machine statusinfo file, but whenever the shell to run to enter the password, and then directly enter the next cycle , there is no hostname command , which is why ah ? Great God ?
all day, and still like this !
------ Solution ---------------------------------------- ----

I changed the line rhs let temp [spawn rsh 192.168.152. $ ip-l hadoop hostname], the result is still the temp effect obtained seem process spawn numbers.   
There are other ways to do ?   
This rsh is how ah ? Redirect loop is not effective ?  

set results $ expect_out (buffer)
------ For reference only ------------------------- --------------



Why ah this is ? I think the logic that are not wrong ?
------ For reference only ---------------------------------------
in the shell environment , a single execution rsh 192.168.150. $ ip-l hadoop hostname >> statusinfo time , without any problems , circulatory problems will emerge , depressed !
Why ah ?

------ For reference only ---------------------------------- -----
expect is not the same, reference examples:

mainly set results $ expect_out (buffer)

   # Send the prebuilt command, and then wait for another shell prompt.
      send "$my_command\r"
      expect "%"
      # Capture the results of the command into a variable. This can be displayed, or written to disk.
      set results $expect_out(buffer)

------ For reference only ----------------------------------- ----

I changed the line rhs let temp [spawn rsh 192.168.152. $ ip-l hadoop hostname], the result is still the temp effect obtained seem process spawn numbers.
There are other ways to do ?
This rsh is how ah ? Redirect loop is not effective ?