Monthly Archives: December 2010

Thursday Quote: Dan Wineman

December 16, 2010 » Life

You say “looks like somebody has too much time on their hands” but all I hear is “I’m sad because I don’t know what creativity feels like.”

– Dan Wineman

Thursday Quote: William Gibson

December 9, 2010 » Geek, Life

“My problem is that all things are increasingly interesting to me.”

– William Gibson
During A Talk On “Zero History”

Tail In PHP

December 3, 2010 » Geek

So I’m working on a little admin interface and I decided to tail some logs. It’s in PHP and Google came up with some stuff, but they were all a bit finickey and not well documented. So I wrote my own!

Here’s the basic concept:

  1. Open File
  2. Seek To End
  3. Loop:
    1. Seek Back By Chunk Size
    2. Read Chunk
    3. Count Newlines
    4. Stash In Buffer
    5. Break If Enough Newlines Total
  4. Trim Extra Line & Cruft
  5. Done!

Here’s the code:

You can give it a try on some junk data here:

Thursday Quote: C. Scott Andreas

December 2, 2010 » Geek

“If you are afraid of your program, troche you have to break it until you are not afraid of it anymore.”

– C. Scott Andreas
You Have to Break It

Headless VirtualBox

December 2, 2010 » Geek

Updated (2010-12-02)

So, duh, multiple interfaces. One NAT one Host-Only. All done.

I recently set up a VirtualBox VM to test BlankSMTP locally, but it’s annoying to have the GUI up all the time when I’m just SSH’ing in. To get around this I set it up to work headless.

The biggest hangup is networking. I had to switch it to Host-Only so that the interface would remain consistent. Other wise with bridged I would get new IP’s all the time, and even then only when the networking init script got triggered somehow.

After that was set I just wrote two quick bash scripts to start and stop. An init script would also be an option if I wanted to make sure it shut down when I power off the laptop, but I decided it wasn’t worth the trouble.

The key commands are VBoxHeadless -startvm [vm name] and VBoxManage controlvm [vm name] savestate



Works like a charm!