renaming digital pictures for ease of access and order

back from nicest time of year and want to share your pictures? first step is often the most cumbersome – sorting pics by date! even more, if you and friends brought two, three, even a handful cameras. The only obvious solution here: rename your pics according to the date and time taken. the following can accomplish this (equally on linux, windows, mac) within seconds:

jhead -n%Y%m%d-%H%M%S *.JPG

– depending on your current naming *.jpg might be appropriate . move to the dir containing your pics first, of course.

jhead is a standalone Package, and it is available as a Windows executable, too.

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useful pdf editing

Converting a pile of jpeg- images (all in same directory) into single pdf document is as easy as follows:

  • have imagemagick installed

adopt the following line to your needs:

convert *.jpeg <output>.pdf

Cutting some pages from an existing pdf document:

  • have pdftk installed

adopt again if needed:

pdftk <input>.pdf cat 2 4 output <output>.pdf

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Howto add virtualbox repository to ubuntu

First, you need to add the repo:
sudo add-apt-repository "deb lucid contrib"
Replace the distro by the one you are using; check availability first by visiting the ftp site .

Before installing, add the vbox.asc Key:

wget -q -O- | sudo apt-key add -

Finally, install via “apt-get update” and “apt-get install virtualbox”, which will let you choose the available versions of the software. Enjoy 🙂

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Rotating a Video on Linux

Rotating a video on Linux is as easy as follows:

  • get the avidemux programme
  • open it, open the original video
  • save the video to a new location
  • select Video – <codec you want>
  • select the newly appeared Filter button
  • add Rotate, configure degrees
  • save the video file again – the programme will start to decode. You can select ‘shutdown when finished’. Rotating a video of 10MB took just some minutes..
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60 seconds for free

R. would have needed 30 jumps to accomplish the project of free-flying 60 seconds for free ..


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affordable error

story about former IBM CEO Thomas Watson: When once one of his employees did badly wrong, the company lost $ 600,000. A journalist wondered, when the guy would get fired. Watson denied, and instead stated calmly: “I just invested $ 600.000 in an employee’s education. Why should somebody else get this experience for free?”

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