Overview:
ttyrec is a tty(terminal) recorder in unix like operating system & recorded data can be played back with the help of ttyplay command. ttyrec is just a derivative of script command for recording timing information with microsecond accuracy as well. It can record emacs -nw, vi, lynx, or any programs running on tty.
Installation on Ubuntu :
$ sudo apt-get install ttyrec
Installation on RHEL 6.X / CentOS 6.X / Fedora
First Download the ttyrec rpm package using wget command and install using below mentioned yum command.
# wget ftp://ftp.pbone.net/mirror/ftp.turbolinux.com/pub/TurboLinux/stable/tested/Desktop/10/i586/ttyrec-1.0.6-1.i586.rpm # yum localinstall ttyrec-1.0.6-1.i586.rpm
Now start Recording using ttyrec command :
Open the terminal type the below command and when you want to stop the recording type exit.
# ttyrec
When we run the above command recording of terminal session will start and when you type exit, recording will be stopped and a file name ‘ttyrecord’ will be created in the current directory.
Now Play the recorded session using ttyplay command
# ttyplay ttyrecord
commonly used options in ttyplay:
- -s SPEED : multiple the playing speed by SPEED (default is 1).
- -n : no wait mode. Ignore the timing information in file.
- -p : peek another person’s tty session.
We can also change the speed by using special keys like :
- + or f double the speed of playback.
- – or s : halve the speed of playback.
- 0 : set playback speed to 0, pausing playback.
- 1 : set playback to speed 1.0 again.
Measuring the time of recorded data:
Using ttytime command we can determine the time of recorded data in seconds.
# ttytime ttyrecord 14 ttyrecord
