TELNET Process in Shell Script

 export FSS_DEST='host_name'
 export FTP_USER='username'
 export FTP_PWD='password‘
 (  echo open $FSS_DEST
    sleep 5
    echo $FTP_USER
    sleep 3
    echo $FTP_PWD
    sleep 3
    echo 'cd $directory_name‘
    echo "chmod 777 filename“
    echo 'some more output, etc.'
    echo 'exit'
) | telnet > /dev/null