A simple plaything for a 19 month old and higher. Post: 303021018

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Operating Systems OS X (Apple) A simple plaything for a 19 month old and higher. Post 303021018 by wisecracker on Thursday 2nd of August 2018 06:01:51 PM

08-02-2018

Registered User

A simple plaything for a 19 month old and higher.

This thread today reminded me of it:
Larger window
This is OSX 10.13.6 and greater centric only.
This expands the terminal window on the fly in bash.
You initially need to put the standard terminal window to the top left hand side as far as it goes.
I wrote this for my 19 month old grandson, (17-06-2018), as he loves punching the computer keyboard.
It is a simple keyboard plaything that prints a coloured squared in a random position inside an expanded terminal window. The window size is for a MBP 13 inch device so that is the reason for the odd terminal size.
If the first argument is set to [Yy] then a single alpha-numeric character is spoken so little one can learn said characters as well as printing the random coloured square. If the second argument is set to [Yy] then you can write a sentance of not more than 40 characters to aid in speech learning also with the random coloured square.
If there are no arguments then just the random coloured square is generated per keystroke.

Code:

#!/bin/bash
# Usage: Baby_Play [sppech<Yy>] [word<Yy>]<CR>
# Examples:
# Baby_Play<CR>
# Baby_Play Y y<CR>
#
# For OSX Sierra and above.
# Place default terminal in upper left hand corner.
# Auto expand to maximum size with dock and top bar showing.
printf "%b" "\x1B[8;48;179t"
# Write into terminal header...
printf "%b" "\x1B]0;Baby_Play, press the Delete or Esc, (and Enter), keys to QUIT.\x07"
clear
echo ""
echo "Usage: Baby_Play [speech<Yy>] [word<Yy>]<CR>"
echo ""
echo 'Press the Delete or Esc, (and Enter), keys at any time to QUIT Baby_Play...'
printf "\nPress ENTER/RETURN to continue:- "
read -r -n 1 char
clear
char="Baby_Play_Original_(C)2017,_B.Walker_Licence_CC0."
speech="$1"
word="$2"
colour=$(( ( $RANDOM % 8 ) + 40 ))
x=$(( $RANDOM % 174 ))
y=$(( $RANDOM % 43 ))
escape=$'\x1B'
backspace=$'\x7F'
# Thanks to Corona688 for the stty section below.
inkey() { char="" ; stty -icanon min 0 time 1 ; char=$( dd count=1 2> /dev/null ) ; }
printf "%b" "\x1B["$(( $y + 2 ))";"$(( $x + 3 ))"f\x1B[0;"$colour"m  \x1B[0m"
while true
do
	printf "%b" "\x1B[1;1f\x1B[0m "
	if [ "$word" = "Y" ] || [ "$word" = "y" ]
	then
		printf "Enter word(s), 40 characters maximum:- "
		read -r -n 40 char
	else
		inkey
	fi
	case $char in
		[''${escape}${backspace}])
			break
		;;
		" "|*[0-9a-zA-Z]*)
			colour=$(( ( $RANDOM % 8 ) + 40 ))
			x=$(( $RANDOM % 174 ))
			y=$(( $RANDOM % 43 ))
			if [ "$speech" = "Y" ] || [ "$speech" = "y" ]
			then
				say -v Daniel "$char"
			fi
			printf "%b" "\x1B["$(( $y + 2 ))";"$(( $x + 3 ))"f\x1B[0;"$colour"m  \x1B[0m"
			printf "%b" "\x1B[1;1f\x1B[0m                                                                                "
		;;
	esac
done
# EXIT comes here.
printf "%b" "\x1B[8;24;80t\x1Bc\x1B[2J\x1B[H\x1B[0m"
printf "%b" "\x1B]0;\x07"
clear
echo "Terminal reset back to original state."
exit 0

Have fun little ones.

wisecracker

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openvt

OPENVT(1)							     Linux 1.x								 OPENVT(1)

NAME

       openvt - start a program on a new virtual terminal (VT).

SYNOPSIS

       openvt [-c vtnumber] [-s] [-u] [-l] [-v] [--] command command_options

DESCRIPTION

       openvt  will  find the first available VT, and run on it the given command with the given command options, standard input, output and error
       are directed to that terminal. The current search path ($PATH) is used to find the requested command. If no command is specified  then  the
       environment variable $SHELL is used.

   OPTIONS
       -c vtnumber
	      Use the given VT number and not the first available. Note you must have write access to the supplied VT for this to work.

       -e     Directly execute the given command, without forking.  This option is meant for use in /etc/inittab.

       -s     Switch to the new VT when starting the command. The VT of the new command will be made the new current VT.

       -u     Figure out the owner of the current VT, and run login as that user.  Suitable to be called by init. Shouldn't be used with -c or -l.

       -l     Make the command a login shell. A - is prepended to the name of the command to be executed.

       -v     Be a bit more verbose.

       -w     wait  for command to complete. If -w and -s are used together then openvt will switch back to the controlling terminal when the com-
	      mand completes.

       --     end of options to openvt.

NOTE

       If openvt is compiled with a POSIX (GNU) getopt() and you wish to set options to the command to be run, then you must  supply  the  end	of
       options -- flag before the command.

EXAMPLES

       openvt can be used to start a shell on the next free VT, by using the command:

       openvt bash

       To start the shell as a login shell, use:

       openvt -l bash

       To get a long listing you must supply the -- separator:

       openvt -- ls -l

HISTORY

       Earlier, openvt was called open.  It was written by Jon Tombs <jon@gtex02.us.es or jon@robots.ox.ac.uk>.  The -w idea is from "sam".

SEE ALSO

       chvt(1), doshell(8), login(1)

19 Jul 1996							       V1.4								 OPENVT(1)