变量展开

#!/bin/bash


#

var=1
var2=var
eval "echo \$$(echo $var2)"

VAR1=1
VAR2=2
VAR3=3
VAR4=4
VAR5=5

VAR_LIST="VAR1 VAR2 VAR3 VAR5"

for var in ${VAR_LIST}
do
  eval "echo \$$(echo $var)"

  echo ${!var}
done