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  • SSH: The Right Setup

    May 23, 2010

    Now that you have the barebone Ubuntu server loaded on Linode, the next step is to set up a non-root user to manage it. Let's create a user called bruce:

    Login into your box as root via the List console, then run this:

    # adduser bruce --disabled-password

    Add bruce to the sudo group:

    # usermod -aG sudo bruce

    Type visudo, and change this line

    %sudo ALL=(ALL) ALL

    to

    %sudo ALL=NOPASSWD: ALL

    so sudo won't ask us for password.

    Next, we need to add our SSH public key to ~/.ssh/authorized_keys

    We need to tell the sshd_config not to ask for password:

    # vim /etc/ssh/sshd_config

    Make sure you have this line:

    PasswordAuthentication no

    Finally, restart your sshd with this command: /etc/init.d/ssh restart

    More resources:

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  • Firebug slows down Firefox no more!

    October 16, 2009

    Firebug slows down Firefox significantly. It's most noticeable when opening Gmail.

    To solve this, use Firefox profiles. You can run multiple instances of firefox with different profiles.

    $ firefox -P coding --no-remote

    That will start a new Firefox instance with "coding" profile. When plugins are installed, they are attached to a specific profile. To create/manage profiles, close Firefox and run:

    $ firefox -ProfileManager

    Don't you love Firefox?

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  • Timestamp Your Models

    October 03, 2009

    Should this model have a timestamp?

    When in doubt, timestamp your models. When not in doubt, timestamp it anyway.

    Because it's handy. While working on this site, someone accidentally generated duplicated games. I previously created those games two weeks earlier. I needed to removes games that were created within the last 24 hours. Timestamp to the rescue!

    Game.delete_all([created_at > 1.day.ago])

    Problem solved!

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