Section: User Commands (1)
Updated: October 2019
scriptreplay - play back typescripts, using timing information
This program replays a typescript, using timing information to ensure that
output happens in the same rhythm as it originally appeared when the script
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,
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
is sending its output.
The timing information is what
outputs to file specified by
By default, the typescript to display is assumed to be named
but other filenames may be specified, as the second parameter or with option
If the third parameter or
is specified, it is used as a speed-up multiplier.
For example, a speed-up of 2 makes
go twice as fast, and a speed-up of 0.1 makes it go ten times slower
than the original session.
- -I, --log-in file
File containing script's terminal input.
- -O, --log-out file
File containing script's terminal output.
- -B, --log-io file
File containing script's terminal output and input.
- -t, --timing file
File containing script's timing output. This option overrides old-style arguments.
- -T, --log-timing file
This is an alias for -t, maintained for compatibility with
- -s, --typescript file
File containing script's terminal output. Deprecated alias to --log-out.
This option overrides old-style arguments.
- -c, --cr-mode mode
Specifies how to use the CR (0x0D, carriage return) character from log files.
The default mode is
in this case CR is replaced with line break for stdin log, because otherwise
would overwrite the same line. The other modes are
- -d, --divisor number
Speed up the replay displaying this
of times. The argument is a floating-point number. It's called divisor
because it divides the timings by this factor. This option overrides old-style arguments.
- -m, --maxdelay number
Set the maximum delay between updates to
of seconds. The argument is a floating-point number. This can be used to
avoid long pauses in the typescript replay.
Display details about the session recorded in the specified timing file
and exit. The session has to be recorded using
option --logging-format for more details).
- -x, --stream type
to print only the specified stream. The supported stream types
This option is recommended for multi-stream logs (e.g.,
in order to print only specified data.
- -V, --version
Display version information and exit.
- -h, --help
Display help text and exit.
% script --log-timing file.tm --log-out script.out
Script started, file is script.out
Script done, file is script.out
% scriptreplay --log-timing file.tm --log-out script.out
program was written by
The program was re-written in C by
Copyright © 2008 James Youngman
Copyright © 2008-2019 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
Released under the GNU General Public License version 2 or later.
The scriptreplay command is part of the util-linux package and is available from
Linux Kernel Archive