Немного команд для напоминания Подбробнее здесь: http://habrahabr.ru/post/266933/#comment_8575267
This project is to memorize shortcuts console
Adding a Custom Message Let’s say you want to add a custom message users will see when they log into your Ubuntu system. Ubuntu’s MOTD is generated by scripts when you log in, so you can’t just add it to the /etc/motd file. The place to put your own static messages is /etc/motd.tail — the contents of this file are added to the end of the MOTD when it’s generated. Let’s use the Nano text editor to open the /etc/motd.tail file with the following command: (Linux terminal wizards can use Vi or Emacs, but Nano is easier for newbies)
sudo nano /etc/motd.tail