一句话的linux

[huazi@huazi ~]$ echo $name

 

[huazi@huazi ~]$ name=tom

[huazi@huazi ~]$ echo $name

tom

[huazi@huazi ~]$ declare -r name

[huazi@huazi ~]$ echo $name

tom

[huazi@huazi ~]$ name=huazi

bash: name: readonly variable

[huazi@huazi ~]$ unset name

bash: unset: name: cannot unset: readonly variable

[huazi@huazi ~]$ 

目前是没有找到在当前shell和当前用户下删除或者取消只读变量的方法。