Linux命令：for循环练习

for循环练习一、分别计算100以内奇数和偶数的和

  1 #showsum.sh

  2 #!/bin/bash

  3 #

  4 declare -i EVENSUM=0
  5 declare -i ODDSUM=0
  6
  7 for I in {1..100}; do
  8   if [ $[$I%2] -eq 0 ]; then
  9     let EVENSUM+=$I
 10   else
 11     let ODDSUM+=$I
 12   fi
 13 done
 14 echo "Odd sum is: $ODDSUM."
 15 echo "Even sum is: $EVENSUM."

[root@localhost ~]# ./showsum.sh
Odd sum is: 2500.
Even sum is: 2550.

for循环练习二、