How to install something on Ubuntu-core?

I have installed Ubuntu-core +Qt on nanopi-m1 board but there is no
terminal to install something on it! How can I do that?

What tools do you use to connect to the development board? Through the
network or serial port?

Oh my GOD!
I didn't think there is an answer here! Sory for delay

Nothing! I am newbie to Ubuntu core and it was a question for me, how can I
do something on it? May you explain more?

I have this connector(TTL to USB):

 But didn't use it since now! Can I use this instead of "PSU-ONECOM" ?

What about network mode? I shoild use SSH? How? can you explain more?

Are there any difference between network and Serial mode in results?

or districtions


eMail (not visible)
Subject (no text only in upper case; no HELP, URGENT...)
HTML tags are not supported and links are generated automatically if they start with http or ftp.
Please submit long source code or log files as attachment (only registered users).
Please enter the number: 8 6 5 0