RosettaCodeData/Task/Colour-bars-Display/UNIX-Shell/colour-bars-display.sh

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#!/bin/sh
clear
WIDTH=`tput cols`
HEIGHT=`tput lines`
NUMBARS=8
BARWIDTH=`expr $WIDTH / $NUMBARS`
l="1" # Set the line counter to 1
while [ "$l" -lt $HEIGHT ]; do
b="0" # Bar counter
while [ "$b" -lt $NUMBARS ]; do
tput setab $b
s="0"
while [ "$s" -lt $BARWIDTH ]; do
echo -n " "
s=`expr $s + 1`
done
b=`expr $b + 1`
done
echo # newline
l=`expr $l + 1`
done
tput sgr0 # reset