BOL

The SSH server is not installed by default on Ubuntu desktop systems but it can be easily installed from the standard Ubuntu repositories.

To install and enable SSH on your Ubuntu system complete the following steps:

Open your terminal either by using the Ctrl+Alt+T keyboard shortcut or by clicking on the terminal icon and install the openssh-server package by typing:

sudo apt update

sudo apt install openssh-server

Once the installation is completed, the SSH service will start automatically. To verify that the installation was successful and SSH service is running type the following command which will print the SSH server status:

sudo systemctl status ssh

Ubuntu comes with a firewall configuration tool called UFW. If the firewall is enabled on your system, make sure to open the SSH port:

sudo ufw allow ssh

Once you’ve found the IP address, login to remote machine by running the following ssh command:

ssh user@ip

If you don’t know your IP address you can easily find it using the this

ip a

Motif algorithms 

This link on Nature explain: how does DNA sequence motif discovery work?

Paper on BMC bioinformatics: survey of DNA motif finding algorithms

This paper discusses some limitations and potentials of motif discovery algorithms (2005)

Bioinformatics for Beginners https://www.coursera.org/learn/bioinformatics which can help with learning the basics of the algorithms underpinning motif discovery.