Today I had a short presentation about unix command line tools. It had four use cases how to combine simple tools like grep and find in order to do some log mining. Even though I prepared everything the Demo Effect was very much present.

I had company's MacBook Pro connected to the projector. And it froze just before presentation when I was checking my slides. Not just an ordinary program crash but something strange. I was able to move mouse pointer but I couldn't click or type anything. Command+Option+Escape did not work either which was even more strange. So, I rebooted the machine which happens to be first revision MacBook Pro...

Then the terminal was causing headache. As the laptop had german keyboard layout it also has ¨ key next to return key. If I pressed that umlaut key accidentally with return it did not show any extra character but my line had an error. And when I checked the line from history it had some garbage in the end.

As I had done my preparations well I had all those scripts on the paper. The idea was to have live presentation using terminal and connection to some test server. It worked well but those scripts had typos. I was checking them before hand but still some problems occurred. Luckily nothing unsolvable, I had some friendly people in the audience who pointed them out when I was scratching my head.

Anyways, it was fun to have a presentation. It has been a while since I had last one. Now I just have to come up an idea for the next.