Shell Programming and Scripting

Hello friends,
I wanna to make new script which work as i defined below

(1) it connect (using ssh) to remote server
(2) remote server having passphrase key with password
(3) Generate new passphrase on local machine with random 8 character password.
(4) It will atomatically uploaded to the remote server & mail send to specified users with new password.

I need some help from you guys to complete this script. now i am stucked at the point of providing password while generating script. can anybody tell me how can i provide password to the script ........................???????????

man expect

Use autoexpect
# autoexpect <return>
#scp/ssh xxx@xx <return>
#password:*****
#ctrl d
it will automatically generate script.exp in the current directory and u can call that script from shell script.
Basically autoexpect logs key strokes and generates the script.
Hope this helps

I am using Ubuntu & these commands are not available in my OS. I have not authority install any softwares on servers.

####################my_shell_script.exp #################
#!/usr/bin/expect -f

exp_internal 1

spawn /usr/bin/scp -i /root/Test/abcds test.txt root@192.168.1.6:/tmp/
expect "*?assword:*"
send "pass_word\r"
send -- "\r"
expect eof


###################Output ###########################

spawn /usr/bin/scp -i /root/Test/abcds test.txt root@192.168.1.6:/tmp/
parent: waiting for sync byte
parent: telling child to go ahead
parent: now unsynchronized from child
spawn: returns {4384}

expect: does "" (spawn_id exp7) match glob pattern "*?assword:*"? no
expect: timed out
send: sending "pass_word\r" to { exp7 }
send: sending "\r" to { exp7 }
pass_word

expect: timed out


can anybody guide me whats wrong in this script ?

Thanks In Advance