shellj脚本学习与工作

#!/bin/bash
# 等腰三角形
read -p "Please input the length: " n
for i in `seq 1 $n`
do
   for ((j=$n;j>i;j--))
   do
      echo -n " "
   done

   for m in `seq 1 $i`
   do
     echo -n "* "
   done
   echo 
done

# 直角三角形
read -p "Please input the length: " len
for i in `seq 1 $len`
do
    for((j=1;j<=$i;j++))
    do
       echo -n "* "
    done
    echo
done

学而不思则罔，思而不学则殆