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Add fade in/out to first & last 25 frames of a video
Replace vid.mp4 with the path to your original video file, and out.mp4 to the path where you want to save the new file. To view the output first before saving, remove "-consumer avformat:out.mp4" from the end. Documentation for mlt framework and melt command can be found here: http://www.mltframework.org/bin/view/MLT/Documentation

Replace duplicate files by hardlinks

Get the full path to a file
Part of coreutils - so needs no extra package...

print file without duplicated lines usind awk
show file withou duplicated lines

Calculate days on which Friday the 13th occurs (inspired from the work of the user justsomeguy)
Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale.

Rename all (jpg) files written as 3 number in 4 numbers.
Useful if you have a list of images called 1 2 3 4 and so on, you can adapt it to rewrite it as 4 (in this example) 0-padded number.

Install pip with Proxy
Installs pip packages defining a proxy

Google text-to-speech in mp3 format

Leap year calculation

Batch convert files to utf-8
taken from http://blog.ofirpicazo.com/linux/batch-convert-files-to-utf-8/


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