Introduction

Almost every system user will have cause to change his/her password during the life of an account. Changing the password is straight-forward. The more complex part is getting connected to the Physics server in the first place.

Getting to the Server: Unix, Linux and MacOS X Users

Unix/Linux and MacOS X users can simply open a text-console or terminal emulator such as xterm, gnome-terminal or the KDE console and use ssh (Secure Shell) to log in to the one of the helios/apollo nodes. At this time it is recommended that you explicity choose helios5 or helios6, since these instructions have been tested on those nodes.

Note that there is no provision for access by systems that do not or cannot support a Secure Shell implementation. If this is the case for your computer, use a different system to access the Physics server.

A Sample SSH Session to Access Helios5

joe@mymachine$ ssh joe@helios5
Password: *******
joe@helios5$ 
  

Getting to the Server: Microsoft Windows Users

Windows users should acquire the PuTTY ssh tools available from the PuTTY official homepage. Only the executable putty.exe is strictly necessary. It can be installed and run from the user's desktop, or placed in C:\WINDOWS\SYSTEM32 and invoked from the Start menu through the Run option.

Once it is running, PuTTY will look similar to the image below.

Enter apollo.physics.utoronto.ca as the Host Name, ensure that the Port is set to 22 and the Protocol is SSH. Click on Open and you will get a console session opened on apollo where you will be prompted for your username and password.

Changing Your Password

Once you have your connection to apollo, you are ready to change your password. The command to change your password is the slightly vowel-deprived passwd. A typical session will look like the following:

joe@helios5$ yppasswd
Changing password for user joe.
Changing password for joe
(current) UNIX password: ********
New UNIX password: ********
Retype new UNIX password: ********
passwd: all authentication tokens updated successfully.
  

The asterisks (*) represent key-strokes, but they will not be echoed to the screen.