Hi, habra people!
The theme of console screencasting has already been 
raised on Habré, but I want to tell you about something better. 
jeck_landin recommends the script and scriptreplay utility for recording and playing screencasts. And I will recommend you my bike and explain what is better :)
The utility I wrote is called shelr. Shelr is written in ruby and uses a script or ttyrec as a backend.
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shelr, unlike script, has a more convenient set of commands and works on all Unix-like systems.
The main problem of the script is that on poppies it has not been touched since the time of bsd 4 and therefore it has not been taught to play screencasts. I solved this problem through an alternative backend for writing - ttyrec.
In addition to a simple record, shelr allows you to quickly publish screencasts 
on the service of the same name or your personal server. You can play screencast 
directly in the browser or in the local terminal (shelr play).

You can install the utility through the package system of your distribution:
PPA: for 
Ubuntu PrecisePKGBUILD: for 
Arch Linux (thanks to 
Max Gonzih )
EBUILD: for 
Gentoo (thanks to 
Alexander Kolesen )
Or through rubygems:
For Linux:gem install shelrFor OSX: brew install ttyrec
 gem install shelr
 shelr backend ttyrec
Login in 10 secondsMan: 
shelr (1)GitHub: 
antono / shelr (client)
GitHub: 
antono / shelr.tv (server)
Web: 
shelr.tvComments and ideas on the development of the service are welcome :)