SSH server on Android - remote access to your green robot device
You can login via SSH on a server. You can do that also for an Android device - phone, tablet or a HDMI/TV Android dongle. Just install a SSH server and you can connect to your device using SSH or SFTP - transfer files or execute commands from the shell. In this article I'll go through installing one of SSH servers on Android and using SSH connection to do handy things on the device.
There are multiple applications providing a SSH server, for example SSHDroid (used in this article), SSH Server, or Ssh server and so on. You don't need root to use most of them, but if you have it you will be able to login as root via SSH.
In case of SSHDroid the setup is easy. You even get an introduction at first start:
The default password is "admin" and it will be also printed out when you will try to connect via SSH. You can use the same credentials to connect via SFTP and manage files on the device.
If you know Bash and working with Linux from the terminal then you will feel quite comfortably with the shell on Android. You can do stuff like top, free or df to see what's going on the device. You also have the Android specific tools like adb and am.
The am command can start applications but you have to know the application name and it intent name that you want to start. The command looks like so:
You can get application name from the application description (usually, depending on Android flavor) in settings. Intents are harder to get. If you are lucky they will be in some documentation or in the source code. If not, you have to take a look at the application APK file and for example - analyze APK manifest (described on wrla.ch blog).
SL4A - scripting languages for Android offer Python runtime - from Py4A or QPython packages. Using a very long command you can execute a Python script from the terminal:
More on code.google.com/p/android-scripting/.