I am learning how to compile using your [CompilingEasyHowTo](https://help.ubuntu.com/community/CompilingEasyHowTo) guide. But as soon as I run the command shown below in the terminal, it shows the following error:

```
tejas@tejas-AU909AA-ACJ-CQ3120IX:~$ sudo chown $tejas /usr/local/src
chown: missing operand after ‘/usr/local/src’

```

Any idea how to overcome this problem?