拼接新的变量名

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##shell变量作为另一个变量名

使用eval

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#!/bin/sh
i=1
eval echo '$'rediscache$i

例1：

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dev@pirate-test:~chimps (master *%) $ i=1                                                                                                              
dev@pirate-test:~chimps (master *%) $ eval echo '$'rediscache$i
10.100.100.100

例2

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#!/bin/sh

for ((i = 1; i < 60; i++)); do
	redis=$(eval echo '$'rediscache$i)
	count=$(redis-cli -h $redis -a ***** DEL key1)
	echo {idx:,$i,redis:,$redis,count:,$count}
done