Access to the command line

Secure Shell or SSH is a network protocol used to remotely access the Linux command line.

Get access from a Linux Ubuntu PC

On a Linux Ubuntu GNU desktop open a new terminal session selecting the the menu Applications -> Accessories -> Terminal then type:

$ ssh root@

If you are using another board instead of an Arietta G25. replace this address with the address of your board (Discover the IP address assigned by DHCP).

At first login a security message will appear. Confirm it typing yes.

$The authenticity of host ' (' can't be established.
RSA key fingerprint is cc:8b:6a:3d:05:d2:34:34:2b:65:17:57:50:00:17:e6.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '' (RSA) to the list of known hosts.

At password request type

  • On Arietta G25: acmesystems
  • On Aria G25 or Terra board: ariag25 or acmesystems
  • On Acqua A4: acqua or acmesystems
  • On FOX Board G20 or Netus G20: netusg20

and get access to the command prompt.

Open a remote command line using PuTTY

Secure Shell or SSH is a network protocol used to remotely access the Linux shell to launch programs or do anything else on your Acme board.

To remotely access a Linux command line from a Windows PC it is available for free and very light application called putty.exe. It is freely downloadable from this link:

It doesn't need to be installed, just download and run it.

At startup you have to specify:

  • Host name: boardname.local or your board IP address
  • Connection type: SSH

To know the board IP address read: Discover the IP address assigned by DHCP.

Save this configuration and press the Open button to continue.

As shown on the image above, do specify the board IP address, select the SSH connection type and click on Open button.

The Acme board will show its prompt and the request for login:


  • on Arietta G25:
  • Login: root
  • Password: acmesystems
  • on Aria G25 or Terra board:
  • Login: root
  • Password: ariag25 or acmesystems
  • on Acqua A5:
  • Login: root
  • Password: acqua or acmesystems
  • on FOX Board G20 or Netus G20:
  • Login: root
  • Password: netusg20

The debian GNU/Linux welcome message and ~# command line prompt will appear.

The board is now ready to execute your commands:

Try to type:

~# pwd

to know were you are in the Acme board filesystem then move to the root (/) and get a list of files and folders:

~# cd /
/# ls
bin   dev  home  lost+found  mnt  proc   root  selinux  stage2  tmp  var
boot  etc  lib   media       opt  sbin  srv sys usr