Reset password via script on ubuntu

gistfile1.txt

Tue Nov 20, 10:21 AM - git branch:  - rbenv version: 1.9.3-p194 
paul@paul-linux ~ $ cat test.sh 
password="mypassword"
user="test"

echo -e "${password}\n${password}" | sudo passwd $user

Tue Nov 20, 10:21 AM - git branch:  - rbenv version: 1.9.3-p194 
paul@paul-linux ~ $ sshpass -p 'mypassword' ssh test@127.0.0.1 "whoami"
Received disconnect from 127.0.0.1: 2: Too many authentication failures for test
Tue Nov 20, 10:21 AM - git branch:  - rbenv version: 1.9.3-p194 
paul@paul-linux ~ $ ./test.sh 
Enter new UNIX password: Retype new UNIX password: passwd: password updated successfully
Tue Nov 20, 10:21 AM - git branch:  - rbenv version: 1.9.3-p194 
paul@paul-linux ~ $ sshpass -p 'mypassword' ssh test@127.0.0.1 "whoami"
test