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1. Unzip all zip files in the directory tree

   If you have a directory containing a lot of zip files with data.

   You might find the following command useful. It unzips all zip files under the current directory in their current location.

   find . -name '*.zip' -exec sh -c 'unzip -o -d "${0%/*}" "$0"' '{}' ';'
   

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2. Rename all files in a directory to lower case

   I had a directory full of CEL files, which I wanted to bring to lower case for consistency with other CEL files I had within that project.

   To rename all files in a specific directory on a Debian based system you can use:

   rename 'y/A-Z/a-z/' *
   

   Or if you ...

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3. Convert avi to wmv

   If you ever want to embed a video file in a PowerPoint presentation, the following command can be useful. It allows you to convert a video file to wmv.

   The wmv format is better supported for playback within PowerPoint (at least on Windows systems). mencoder luckily makes this very easy ...

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4. Save the first N lines of a gzipped file to a new file (without unzipping)

   I needed to write an import function in R for a certain data file. There was no description of the file format available, but I did have access to the files themselves. These were gzipped text files over 10G.

   Rather than unzipping them first and then use head:

   head -1000 ...

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5. Recursively copy all jpeg files to a single directory

   I have backups from multiple machines on one external hard drive. No I wanted to combine all pictures from those machines into one big folder, so I could easily upload them into owncloud and have one place with all our images.

   This job turned out to be simple using a ...

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6. Let's encrypt!

   Introduction

   I am using fabric to automate the installation and configuration of my server. I use Python for a lot of things, and the more I can do in one language the more proficient you get in that language. So when looking for a tool to allow scripting of software ...

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7. The beginning

   Today I have started my new blog. :)

   I will blog about things that are of interest to me.

   Those things are:

   • R
   • Python
   • Data science
   • Host your own services
   • Home automation

   And combinations thereof.

   I will start with some posts about how I created this blog. Obviously, I am hosting ...

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