How do I modify the short username in OS X?

Question

I have modified my username from Supreeth to Sagar R Kothari. But I feel that it's not applied in most of the places where it's used.

1. The username Supreeth is found in each new project (e.g. project templates)
2. Each terminal window says blrwks0157:~ Supreeth$. It indicates that the username is still "Supreeth".

How do I modify the username?

Answer 1

There are two separate "user names".

One is the Full Name displayed in Users & Groups preference pane, on the login screen, etc., e.g. Daniel Beck. This user name can actually contain spaces and other special characters.

The other is the internal Account Name, e.g. danielbeck. It needs to be alphanumeric only (so there is absolutely no way of doing what you want to do!). To change your short name, right-click your user account in Users & Groups preference pane, choose Advanced Settings and edit there. You should take the warning in that dialog serious though. You can break stuff by changing this.

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You can always create a new user account and transfer your data over.