bash shell脚本while循环

例子：

~ script % vim while.sh
~ script % ./while.sh

while.sh:

#!/usr/bin/env bash

COUNT=0

while [ $COUNT -lt 10 ]
do
	echo "Count # $COUNT"
	((COUNT++))
done
exit 0

script % ./while.sh  
Count # 0
Count # 1
Count # 2
Count # 3
Count # 4
Count # 5
Count # 6
Count # 7
Count # 8
Count # 9

语法：

while [ 循环条件 ]
do
	循环体
done

或

while test 循环条件 
do
	循环体
done

while循环还是比较简单的。