Manual Reference Pages  - REPLAY (1)


scriptreplay - play back typescripts, using timing information




scriptreplay [options] [-t] timingfile [typescript [divisor]]


This program replays a typescript, using timing information to ensure that output happens at the same speed as it originally appeared when the script was recorded.

The replay simply displays the information again; the programs that were run when the typescript was being recorded are not run again. Since the same information is simply being displayed, scriptreplay is only guaranteed to work properly if run on the same type of terminal the typescript was recorded on. Otherwise, any escape characters in the typescript may be interpreted differently by the terminal to which scriptreplay is sending its output.

The timing information is what script(1) outputs to standard error if it is run with the -t parameter.

By default, the typescript to display is assumed to be named typescript, but other filenames may be specified, as the second parameter or with option -s.

If the third parameter is specified, it is used as a speed-up multiplier. For example, a speed-up of 2 makes scriptreplay go twice as fast, and a speed-up of 0.1 makes it go ten times slower than the original session.


The first three options will overide old-style arguments.
-t, --timing file
  File containing script timing output.
-s, --typescript file
  File containing the script terminal output.
-d, --divisor number
  Speed up the replay displaying this number of times. The argument is a floating point number. It’s called divisor because it divides the timings by this factor.
-V, --version
  Display version information and exit.
-h, --help
  Display a help message and exit.


 % script -t 2> timingfile
 Script started, file is typescript
 % ls
 <etc, etc>
 % exit
 Script done, file is typescript
 % scriptreplay timingfile




Copyright © 2008 James Youngman

Copyright © 2008 Karel Zak

This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Released under the GNU General Public License version 2 or later.


The original scriptreplay program was written by Joey Hess <>. The program was re-written in C by James Youngman <> and Karel Zak <>.


The scriptreplay command is part of the util-linux package and is available from

util-linux REPLAY (1) September 2001
blog comments powered by Disqus