Title: Autoscrolling text for lazy reading

	Title: Autoscrolling text for lazy reading
	Author: Solène
	Date: 17 May 2018
	Tags: unix
	Description:

	Today I found a software named
	[Lazyread](http://lazyread.sourceforge.net/) which can read and
	display file an autoscroll at a chosen speed. I had to read its source
	code to make it work, the documentation isn't very helpful, it doesn't
	read ebooks (as in epub or mobi format) and doesn't support
	stdin... This software requires some C code + a shell wrapper to
	works, it's complicated for _only_ scrolling.

	So, after thinking a few minutes, the autoscroll can be reproduced
	easily with a very simple awk command. Of course, it will not have the
	interactive keys like lazyread to increase/decrease speed or some
	others options, but the most important part is there:
	autoscrolling.

	If you want to read a file with a rate of 1 line per 700 millisecond,
	just type the following command:

	$ awk '{system("sleep 0.7");print}' file

	Do you want to read an html file (documentation file on the disk or
	from the web), you can use lynx or w3m to convert the html file on the
	fly to a readable text and pass it to awk stdin.

	$ w3m -dump doc/slsh/slshfun-2.html \| awk '{system("sleep
	0.7");print}'
	$ lynx -dump doc/slsh/slshfun-2.html \| awk '{system("sleep
	0.7");print}'
	$ w3m -dump https://dataswamp.org/~solene/ \| awk '{system("sleep
	0.7");print}'

	Maybe you want to read a man page?

	$ man awk \| awk '{system("sleep 0.7");print}'

	If you want to pause the reading, you can use the true unix way,
	Ctrl+Z to send a signal which will stop the command and let it paused
	in background. You can resume the reading by typing `fg`.

	One could easily write a little script parsing parameters for setting
	the speed or handling files or url with the correct command.

	Notes: If for some reasons you try to use lazyread, fix the shebang
	in the file lesspipe.sh and you will need to call lazyread binary with
	the environment variable `LESSOPEN="\|./lesspipe.sh %s"` (the path of
	the script if needed). Without this variable, you will have a very
	helpful error "file not found".