How do I change my password?

Connect to a public workstation, run passwd, and follow the prompts.

Longer version:

When you run passwd, you will be prompted to type in first your old (current) password (to authenticate), then your desired new password, then your desired new password once more to confirm. No characters will be echoed to your terminal as you type in either your old or new password. Hit enter after you have typed in each password. If you enter your existing password incorrectly or if your desired new password fails to pass the automatic strength checks, an alert will be written to standard error.

Note: Password changes may take up to one hour to synchronize to all CS machines. If you change your password and the new password doesn’t work right away, either use your old password or wait an hour and try again.