Safe Reboot of Locked Linux Machine

Sometimes your Linux machine will lock up, it just happens. But before you reach for the reset button try and use the magic SysRq key combination to try and perform a safe reboot. Continue reading

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Quick way to remove X Server for running a headless server

I use my Raspberry Pi as a headless server so do not need anything that relies on X11, this is a quick way to get rid of everything that depends on X11 to save some space. Continue reading

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How far is 1 astronomical unit (AU)?

An astronomical unit (AU) is a commonly used unit in astronomy, but what exactly is its value?

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Making files and folders lowercase

Very occasionally I want to make all the files and folders of a particular directory lowercase (usually when porting an existing directory structure from Windows to Linux) this is how I do it.  Continue reading

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Math(s) can be confusing…

I meet a man walking down the street, who I know has two children. He introduces me to his son, what is the probability that his other child is a girl? Continue reading

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Goodbye Google Reader

As we say goodbye to one of my favourite Google features it is time to find a replacement.     Continue reading

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Standard Deviation in IDL

The built in IDL standard deviation function in IDL, STDDEV, uses the moment function which treats the standard deviation as a sample, rather than a population. A short programme can give us both options.  Continue reading

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Standard Deviation of Noise in TV Viewing Figures

As discussed in my last post we found that ‘the standard deviation of the noise in viewers is about 20% of the range of viewers’ for Grey’s Anatomy. I wanted to see if a similar figure was true for other TV shows.      Continue reading

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Graphical Analysis of Grey’s Anatomy Viewing Figures

I recently started watching Grey’s Anatomy which I’ve been enjoying. However a friend of mine told me that the later episodes are not as good. So I thought I would have a look if the viewing figures reflected this.     Continue reading

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Google Map Maker UK

Since last Thursday Google’s excellent Map Maker has been made available for UK users.     Continue reading

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