server# apt install expect

server# cat router.exp

#!/usr/bin/expect
spawn telnet router
send "\n"
expect "sword:" { send "cisco\n" }
expect ">" { send "enable\n" }
expect "sword:" { send "cisco\n" }
expect "#" { send "copy tftp://server/router.acl runn\n" }
send "\n"
send "\n"
expect "#" { send "exit\n" }
send_user "\n"
exit 0

server# chmod +x router.exp

server# ./router.exp