scriptreplay(1) 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 in the same rhythm 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 override old-style arguments.
-t, --timing file
File containing script's timing output.
-s, --typescript file
File containing script's 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.
-m, --maxdelay number
Set the maximum delay between transcript updates to number of seconds. The argument is a floating point number. This can be used to avoid long pauses in the transcript replay.
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.


% script script.out
Script started, file is script.out
% ls
<etc, etc>
% exit
Script done, file is script.out
% scriptreplay --timing --typescript script.out


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 Linux Kernel Archive