shell数组基本用法
1.定义数组#array=(1 2 3 4) 2.计算数组的个数
#echo ${#array[@]}
3
3.打印数组
#echo ${array}
1
#echo ${array}
2
（这里数组是从0开始，0代表第一个元素)
4.打印整个数组
#echo ${array
[*]}
1 2 3
#echo ${array[@]}
1 2 3
5.数组的赋值
# array=xiaolangit
# echo ${array[@]}
xiaolangit 2 3 4
6.删除单个数组
#array=(1 2 3)
#unset array
#echo ${array[@]}
7.截取
输出数组第1个到第3个值
#array=(1 2 3 4 5)
#echo ${array[@]:1:3}
2 3 4
输出数组除了第1个值
#echo ${array[@]:1}
#2 3 4 5
8.替换
#echo ${array[@]/5/6}
1 2 3 4 6
9.匹配
#array=(one two three four five)
#echo ${array[@]#o}
ne two three four five
#echo ${array[@]#fo}
one two three ur five
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