step9

#!/bin/sh

fakeshell() {
	echo
	oldifs="$IFS"
	IFS=""
	read -p "$ " -r COMMAND
	IFS="$oldifs"
	if [ "$COMMAND" = "exit" ]; then exit; fi
	OUTPUT="`eval "$COMMAND"`"
	echo "$OUTPUT"
	echo
}

BOLD="\033[1m"
NORMAL="\033[0m"

printf "So, we now have the lines back in the right order.  "
printf "What do you think ${BOLD}<${NORMAL} does?\n"
printf "${BOLD}<${NORMAL} is called the "
printf "${BOLD}input redirection operator${NORMAL}, and it sends the contents "
printf "of a file into a command.\n"
echo
echo "Lets try to save the sorted lines back in the file."

OUTPUT=""
while [ -n "`cat saved`" ]; do
	printf "Try typing ${BOLD}sort < saved > saved${NORMAL}.  "
	printf "Then, print the contents of ${BOLD}saved${NORMAL}.\n"
	fakeshell
	fakeshell
done

./step10