How to scp and ssh from Ubuntu to a Raspberry Pi without a password

From your local machine, be able to log in or rcp or rsync files to the rpi without having to enter a password.  This enables automated scripts to push code to the rpi as a server, or to automate backups.

1. Create a local .ssh directory with cd ~; mkdir .ssh
2. Create a public/private key pair with ssh-keygen -t rsa (take all the defaults when prompted)
• The private key is ~/.ssh/id_rsa
• The public key is ~/.ssh/id_rsa.pub
3. Copy the public key to the remote rpi with scp id_rsa.pub pi@192.168.1.100:./ (your ip address may be different)
4. ssh to the rpi with ssh pi@192.168.1.100
5. Create a .ssh directory with mkdir .ssh
6. Move id_rsa.pub to the .ssh directory and rename it with mv id_rsa.pub .ssh/authorized_keys
7. Test with ssh pi@192.168.1.100 - you should be logged in without entering a password.

Opening the gnome terminal maximized in Ubuntu 16.04

Using the Ctrl-Alt-T keyboard shortcut:

1. Search for "Keyboard" in the Unity launcher
2. Click the shortcuts tab
3. Click "Custom Shortcuts"
4. Click the "+" at the bottom of the window
5. Enter a name, e.g., "Terminal"
6. Enter the command: gnome-terminal --maximize
7. Click "Apply"
8. Set the keyboard shortcut by highlighting the row and typing the Ctrl-Alt-T key combination

Using the Unity Launcher

1. Edit the file ~/.local/share/applications/gnome-terminal.desktop
2. Paste these lines into the file:
   [Desktop Entry]
   Type=Application
   Name=Terminal
   Icon=utilities-terminal
   Exec=gnome-terminal --maximize
   
3. Save the file
4. Log out and back in again

The gnome terminal should launch maximized from either the Unity launcher or the Ctrl-Alt-T keyboard shortcut.  This does not solve the problem opening the terminal from Nautilus maximized.