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Archive for September, 2008

R: Logical operators: Beware of the difference between “&&” and “&”

Friday, September 12th, 2008

There’s a tricky bit about R‘s logical operators, and though it’s described in the help pages that you get when you type, for example, ?”&” I still fall from it from time to time. (I think it has to do with my rudimentary knowledge and usage of “&&” for if-statements in bash shell scripts. Below […]

Disable boot process checking for keyboard on Dell desktop

Friday, September 5th, 2008

Whenever I forgot to plug in my keyboard before booting my Dell desktop, it would halt with the amusing error message: Keybard failure. Press F1 to continue, F2 for setup. When I was at home, I could just plug in the keyboard and hit F1, but when I was trying to boot the computer remotely […]