Creating a christmas tree on linux terminal

Here is a script that,when executed, will draw a christmas tree using the characters choosen by the user on the linux terminal.

The script will prompt the user to enter the character using which the tree has to be drawn. Then it will prompt the user to enter two characters that will be used to decorate the tree. The last input it will ask for is the character using which the base of the tree has to be drawn.

chritstmas_tree.sh

#!/bin/bash trapi() { cols=`tput cols` start=$((cols/2)) # char="*" char="$3" rows=$1 rows=$((rows+5)) # tput clear for((i=$1;i<$rows;i++)) do deco1=$(($RANDOM % rows)) deco2=$((RANDOM % rows)) cols=$((start-i-$2)) tput cup $i $cols #printf "$char" for((j=0;j<=(i+$2);j++)) do if [ $i -eq $((rows-1)) ] then printf "$char " elif [ $j -eq 0 ] then printf "$char " else if [ $j -eq $((i+$2)) ] then printf "$char " else if [ $j -eq $deco1 ] then printf "$4 " elif [ $j -eq $deco2 ] then printf "$5 " else printf " " fi fi fi done done echo"" } triangle() { cols=`tput cols` start=$((cols/2)) #echo "How many rows do you want" #read rows #echo "What character do you want to use" #read char rows=5 # char="*" char="$1" tput clear for((i=0;i<rows;i++)) do cols=$((start-i)) tput cup $i $cols deco=$(($RANDOM%rows)) #printf "$char" for((j=0;j<=i;j++)) do if [ $i -eq $((rows-1)) ] then printf "$char " elif [ $j -eq 0 ] then printf "$char " else if [ $j -eq $i ] then printf "$char " else if [ $j -eq $deco ] then printf "$2 " else printf " " fi fi fi done done echo"" # sleep 5 } base() { cols=`tput cols` start=$((cols/2)) #char="*" rows=5 char="$2" # tput clear for((i=0;i<5;i++)) do cols=$((start-i-2)) tput cup $(($1+i)) $cols #printf "$char" for((j=0;j<=(i+2);j++)) do if [ $i -eq $((rows-1)) ] then printf "$char " elif [ $j -eq 0 ] then printf "$char " else if [ $j -eq $((i+2)) ] then printf "$char " else printf " " fi fi done done echo"" } echo "Enter character for the tree" read char echo "Enter first decoration character" read ch_deco1 echo "Enter second decoration character" read ch_deco2 echo "Enter character for base" read base_char triangle "$char" "$ch_deco1" trapi 5 1 "$char" "$ch_deco1" "$ch_deco2" trapi 10 2 "$char" "$ch_deco1" "$ch_deco2" trapi 15 3 "$char" "$ch_deco1" "$ch_deco2" base 20 "$base_char"

Save the script as chritstmas_tree.sh and give it execute permissions

$ chmod 777 chritstmas_tree.sh Execute the script $ ./chritstmas_tree.sh Enter character for the tree * Enter first decoration character o Enter second decoration character ! Enter character for base ^

You should see the following on your screen.

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