There is a way to do this using expect scripts

See my post at https://supportforums.cisco.com/message/3438495#3438495

you can use cron to call the shell script that calls the commands expect file.

commands expect script for backing up configs. Change the script upload variables for your environment

#!/usr/bin/expect

set router [ lindex $argv 0]

set username [ lindex $argv 1]

set password [ lindex $argv 2]

spawn ssh $router

#log_user 0

set timeout 10

expect "(yes/no)?" {

send "yes\r"; exp_continue }

expect "User:"

send -- "$username\r"

expect "assword:"

send -- "$password\r"

expect "Controller"

send -- "transfer upload datatype config\r"

expect "Controller"

send -- "transfer upload mode tftp\r"

expect "Controller"

send -- "transfer upload serverip \r"

expect "Controller"

send -- "transfer upload start\r"

# some wlc config commands require yes/no verification

expect "(y/N)"

send -- "y\r"

expect "Controller"

send "logout\r"

expect "(y/N)"

send -- "n\r"

expect eof