Creating a triangle of characters in the terminal

Here is a script that crates a triangle of what ever character we choose.
The triangle gets created right at the center in the terminal.
The script uses tput along with various loops to create the triangle.

triangle.sh

#!/bin/bash #Script to create a triangle in the terminal using the character chosen by the user cols=`tput cols` start=$((cols/2)) echo "How many rows do you want" read rows echo "What character do you want to use" read char tput clear for((i=0;i<rows;i++)) do cols=$((start-i)) tput cup $i $cols for((j=0;j<=i;j++)) do printf "$char " done done echo""

Save the script and give it execute permission

chmod 777 triangle.sh

Execute the script as follows

$ ./trinagle.sh How many rows do you want 8 What character do you want to use *

You should see a triangle of * as below on the terminal.

You can enter any number of rows and any character to create the triangle, the only limit being the number of rows should not exceed one screen of the terminal, it can not create a shape that goes beyond one screen.