David Haberthür habi

#How I built an audio book reader for my nearly blind grandfather

Last year, when visiting my family back home in Holland, I also stopped by my grand-parents. My grand-father, now 93 years old, had always been a very active man. However, during the presceding couple of months, he'd gone almost completely blind and now spent his days sitting in a chair. Trying to think of something for him to do, I suggested he try out audio books. After finally convincing him -- he said audio books were for sad old people -- that listening to a well performed recording is actually a wonderful experience, I realized the problem of this idea.

####The problem with audio devices and the newly blind. After my first impulse to jump up and go buy him an

Screen Quick Reference

Basic

Description	Command
Start a new session with session name	`screen -S <session_name>`
List running sessions / screens	`screen -ls`
Attach to a running session	`screen -x`
Attach to a running session with name	`screen -r`

Commonly used scientific symbols in pandoc markdown

encoding is UTF-8, needs xelatex, like this:

---
output:
  pdf_document:
    latex_engine: xelatex
---

Himawari-8 animation tutorial

Here’s how to make animations like this one. It requires intermediate Unix command-line knowledge, to install some tools and to debug if they don’t work. You’ll need these utilities:

curl (or you can translate to wget)
convert and montage, part of ImageMagick
ffmpeg, plus whatever codecs
parallel, for iteration that’s nicer than shell for loops or xargs
run everything in zsh for leading 0s in numerical ranges to work

1944 Simple Sabotage Field Manual, by Strategic Services

https://www.cia.gov/news-information/featured-story-archive/2012-featured-story-archive/CleanedUOSSSimpleSabotage_sm.pdf

Title: Simple Sabotage Field Manual Author: Strategic Services Office of Strategic Services

Office Web Apps Viewer

('.ppt' '.pptx' '.doc', '.docx', '.xls', '.xlsx')

http://view.officeapps.live.com/op/view.aspx?src=[OFFICE_FILE_URL]

<iframe src='https://view.officeapps.live.com/op/embed.aspx?src=[OFFICE_FILE_URL]' width='px' height='px' frameborder='0'>
</iframe>

	*.acn
	*.acr
	*.alg
	*.aux
	*.bak
	*.bbl
	*.bcf
	*.blg
	*.brf
	*.bst

	# Latex files

	*.aux
	*.glo
	*.idx
	*.log
	*.toc
	*.ist
	*.acn
	*.acr

	# Output a single frame from the video into an image file:
	ffmpeg -i input.mov -ss 00:00:14.435 -vframes 1 out.png

	# Output one image every second, named out1.png, out2.png, out3.png, etc.
	# The %01d dictates that the ordinal number of each output image will be formatted using 1 digits.
	ffmpeg -i input.mov -vf fps=1 out%d.png

	# Output one image every minute, named out001.jpg, out002.jpg, out003.jpg, etc.
	# The %02d dictates that the ordinal number of each output image will be formatted using 2 digits.
	ffmpeg -i input.mov -vf fps=1/60 out%02d.jpg