代码：

[root@oracle-cluster-3 shell]# cat define_variable_in_func.sh 
var_1="1"

echo "Before change value is: [$var_1]"

function change_value() {
  eval func_variable="$1"
  func_new_value="$2"

  #"`eval echo $func_variable`"="$func_new_value"
  eval $func_variable=\"${func_new_value}\"

}

change_value "var_1" "$1"

echo "After change value is: [$var_1]"
[root@oracle-cluster-3 shell]# 
[root@oracle-cluster-3 shell]# sh define_variable_in_func.sh "hello world"
Before change value is: [1]
After change value is: [hello world]
[root@oracle-cluster-3 shell]# 
[root@oracle-cluster-3 shell]# sh define_variable_in_func.sh "hello world(abcd)"
Before change value is: [1]
After change value is: [hello world(abcd)]
[root@oracle-cluster-3 shell]#

——————————
Done。