[Shell]字典的使用

• 定义一个字典名称

declare -A ipaddress

• 赋值

ipaddress=([master1]="10.1.90.181" [master2]="10.1.90.182" [master3]="10.1.90.183" [node1]="10.1.90.184" [node2]="10.1.90.185" [node3]="10.1.90.186")

• 获取Key值 echo ${![*]}

[root@master1 ~]# echo ${!ipaddress[*]}
master2 master3 master1 node1 node2 node3

• 获取Value值

[root@master1 ~]# echo ${ipaddress[*]}
10.1.90.182 10.1.90.183 10.1.90.181 10.1.90.184 10.1.90.185 10.1.90.186

• 通过key获取值

[root@master1 ~]# echo ${ipaddress[master1]}
10.1.90.181

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