UNIX for Dummies Questions & Answers

#!/bin/bash

# $VER: plot.sh_Version_0.00.10_Public_Domain_2013_B.Walker.
# A means of shifting the cursor and text printing at the same time inside one function.

# Positional _plot_ function...
plot() { printf "\x1B["$vert";"$horiz"f$char" ; }

# A simple clear screen function just for added fun...
# I know, I KNOW, I can use clear but that defeats the reason for this plot function!
clrscn()
{
for vert in $( seq 1 64 )
do
	printf "\n"
done
# Set the cursor to the top left hand corner.
horiz=1
vert=1
char=""
# Now use plot with its required _arguments_ after the function call.
plot $vert $horiz $char
}

clrscn
# Just a delay, nothing more...
sleep 1

# Draw a tringle upwards slope.
horiz=20
char="*"
for vert in $( seq 22 -1 2 )
do
	# Remember; _arguments_ added after the function call...
	plot $vert $horiz $char
	horiz=$[ ( $horiz + 1 ) ]
done

# Shift back 1 horizontal position for triangle apex...
horiz=$[ ( $horiz - 1 ) ]

# Now draw the the triangle's downards slope.
for vert in $( seq 2 1 22 )
do
	plot $vert $horiz $char
	horiz=$[ ( $horiz + 1 ) ]
done

# Draw the triangle's bottom line...
horiz=21
vert=22
char="***************************************\n"
plot $vert $horiz $char

# Finally write a string inside the triangle.
horiz=24
vert=21
char="Plotting and drawing the easy way.\n\n\n"
plot $vert $horiz $char

# Place the command prompt at the top...
horiz=1
vert=1
char=""
plot $vert $horiz $char

# Plot function end...