Linux command
readonly 命令
文本
复制后可按需替换文件名、目录或参数。
常用示例
Make variable readonly
readonly [VAR]="[value]"
Make existing variable readonly
readonly [VAR]
List readonly variables
readonly
Make function readonly
readonly -f [function_name]
Make array readonly
readonly -a [ARRAY]
说明
readonly is a shell builtin that marks variables or functions as read-only, preventing modification or unsetting. Useful for constants and protecting configuration values.
参数
- -p
- Print readonly variables.
- -f
- Make functions readonly.
- -a
- Make arrays readonly.
- -A
- Make associative arrays readonly.
FAQ
What is the readonly command used for?
readonly is a shell builtin that marks variables or functions as read-only, preventing modification or unsetting. Useful for constants and protecting configuration values.
How do I run a basic readonly example?
Run `readonly [VAR]="[value]"` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -p do in readonly?
Print readonly variables.