Record and replay shell sessions using script(1) and scriptreplay(1)

record.sh

#! /bin/sh

#  Record - record shell session using script(1)
#  Copyright (C) 2011 Matous J. Fialka, <http://mjf.cz/>
#  Released under the terms of The MIT License

RECORD_PATH="$HOME/.typescripts/%Y/%m/%d"
RECORD_FILE='%H%M%S'
RECORD_TIMING_FILE="$RECORD_FILE.timing"

if ! RECORD_PATH=`
	date "+$RECORD_PATH" 2>/dev/null
	`
then
	echo 'Error: invalid typescript path specified.' 1>&2
	exit 1
fi

if ! mkdir -p "$RECORD_PATH" 2>/dev/null
then
	echo "Error: could not create typescript path $RECORD_PATH." 1>&2
	exit 1
fi

if ! RECORD_FILE=`
	date "+$RECORD_FILE" 2>/dev/null
	`
then
	echo 'Error: invalid typescript file specified.' 1>&2
	exit 1
fi

if [ -f "$RECORD_FILE" ]
then
	echo "Error: typescript file $RECORD_FILE exists." 1>&2
	exit 1
fi

if ! RECORD_TIMING_FILE=`
	date "+$RECORD_TIMING_FILE" 2>/dev/null
	`
then
	echo Error: invalid typescript timing file specified. 1>&2
	exit 1
fi


if [ -f "$RECORD_TIMING_FILE" ]
then
	echo "Error: typescript timing file $RECORD_TIMING_FILE exists." 1>&2
	exit 1
fi

RECORD_FILE="$RECORD_PATH/$RECORD_FILE"
RECORD_TIMING_FILE="$RECORD_PATH/$RECORD_TIMING_FILE"

if ! script -c "$*" -t "$RECORD_FILE" 2>"$RECORD_TIMING_FILE"
then
	echo "Error: could not record data." 1>&2

	rm -f "$RECORD_FILE"
	rm -f "$RECORD_TIMING_FILE"

	exit 1
fi

replay.sh

#! /bin/sh

#  Replay - replay typescript using scriptreplay(1)
#  Copyright (C) 2011 Matous J. Fialka, <http://mjf.cz/>
#  Released under the terms of The MIT License

if [ $# -eq 0 ]
then
	echo "Usage: replay TYPESCRIPT [-c] [DIVISOR]" 1>&2
	exit 1
fi

RECORD_FILE="$1"
RECORD_TIMING_FILE="$RECORD_FILE.timing"

shift

if [ "$1" = '-c' ]
then
	shift

	if ! TEMPORARY_FILE=`mktemp 2>/dev/null`
	then
		echo "Error: could not create temporary file." 1>&2
		exit 1
	fi

	if ! awk '

		{ printf "%f %d\n", (($1 - last) > 1) ? 1 : $1, $2 }

	' "$RECORD_TIMING_FILE" >"$TEMPORARY_FILE" 2>/dev/null

	then
		echo "Error: could not condense data, sorry." 1>&2

		rm -f "$TEMPORARY_FILE"

		exit 1
	fi

	RECORD_TIMING_FILE="$TEMPORARY_FILE"
fi

if ! [ -f "$RECORD_FILE" ]
then
	echo "Error: typescript file $RECORD_FILE not found." 1>&2
	exit 1
fi

if ! [ -f "$RECORD_TIMING_FILE" ]
then
	echo "Error: typescript timing file not found." 1>&2
	exit 1
fi

if ! scriptreplay "$RECORD_TIMING_FILE" "$RECORD_FILE" $1 2>/dev/null
then
	echo "Error: could not replay data." 1>&2
	exit 1
else
	echo
fi

rm -f "$TEMPORARY_FILE"

Useful alias:

replaylast='replay `ls -1 /home/mjf/.typescripts/*/*/*/* |tail -3 |head -1`'