UNIX for Beginners Questions & Answers

str="*"

for i in 1 2 3 4 5
do
   echo "$str"
   str="$str *"
done

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            *

str="* * * * *"
for i in 1 2 3 4 5
  do   echo "$str"
       str="${str/\*/ }"
  done
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        *

#!/bin/bash
str="* * * * *"
spc="   "
echo "$str"
for i in 2 4 6 8
do
	newstr="$spc${str:$(($i-2)):$((9-$i))}"
	spc=$spc"   "
	echo "$newstr"
done

Last login: Mon Oct 31 14:40:10 on ttys000
AMIGA:barrywalker~> cd Desktop/Code/Shell
AMIGA:barrywalker~/Desktop/Code/Shell> chmod 755 draw.sh
AMIGA:barrywalker~/Desktop/Code/Shell> ./draw.sh
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         * *
            *
AMIGA:barrywalker~/Desktop/Code/Shell>