#/bin/bash
echo "please input num:"
read i
for a in `seq 1 $i`
do
b=$[$i - $a]
for b in `seq 1 $b`
do
echo -n " "
done
c=$[ 2 * $a - 1 ]
for c in `seq 1 $c`
do
echo -n "*"
done
echo
done
################################################
echo "please input num:"
#/bin/bash
read i
for a in `seq 1 $i`
do
b=$[$i - $a]
for b in `seq 1 $b`
do
echo -n " "
done
for c in `seq 1 $a`
do
echo -n "*"
echo -n " "
done
echo
done