SSH into Dexter

SSH stands for "Secure SHell. It is an application running on a computer that gives you a command line interface to typing in 'shell' commands into another computer such as Dexter's Linux operating system. Here's how to use it to control your Dexter:

All Operating Systems

1. Connect an Ethernet cable between your computer and the Dexter processor board.
2. Username: root
3. password: klg

Windows OS

1. Install an SSH client (e.g. [PuTTY (https://www.chiark.greenend.org.uk/~sgtatham/putty/)).
2. Configure the IP address in the client software to 192.168.1.142 (this is [Dexters default IP address (Dexter-Networking)), or to the IP address assigned via your router.
3. set the port to 22.
4. select SSH.

MacOS

1. Double click on the file: Applications/Utilities/Terminal.app
2. Type in root@192.168.1.142 and hit enter.
3. When prompted, type in password: klg and hit enter.

Commonly Used Shell Commands

• pwd (print working directory)
• cd dirname_in_working_directory (change directory to the given sub directory)
• cd .. (change directory to the parent of the working directory)
• ls (show contents of the working directory)
• ls -l (show working directory contents including permissions, owner, size, modified date.)
• cat filename (show contents of the given file)
• nano (start a new editor buffer.
  Help at the screen bottom tells you basic commands. When performing Control-x to exit the buffer, you will be prompted to indicate if you want to save the file, and if so, a new file name.)
• nano filename (Edit an existing file.
  Use regular commands like the arrow keys, delete/backspace, etc...
  ctrl+o Outputs a file... this is SAVE not open.
  ctrl+x to eXit.
  To select text, move the cursor to the start of the text you want to select, press the Alt-A key combination to mark the start, then move the cursor to the end of the section you want to select.
  Ctrl+K to cut your selection
  Ctrl+U to paste it.)

Detailed instructions are available for updating the firmware or gateware