Linux command
autoload 命令
文本
复制后可按需替换文件名、目录或参数。
常用示例
Autoload a function
autoload [function_name]
Autoload with immediate undefined-function handling
autoload -U [function_name]
Autoload with zsh-style function initialization
autoload -Uz [function_name]
Autoload all functions
autoload -Uz $fpath[1]/*(.:t)
Autoload the completion system
autoload -Uz compinit && compinit
Autoload the prompt system
autoload -Uz promptinit && promptinit
说明
autoload marks shell function names for deferred loading. Instead of reading a function definition into memory at startup, the shell records only the function name. When the function is first called, the shell searches the directories listed in $fpath for a file matching the function name, reads its definition, and executes it. This mechanism significantly reduces shell startup time when many functions are available but rarely used. The function file should contain the function body directly (not wrapped in a `function name { }` block for zsh-style autoloading). autoload is essential for zsh's completion system (compinit), prompt themes (promptinit), and many other standard functions distributed with zsh.
参数
- -U
- Suppress alias expansion when the function is loaded
- -z
- Use zsh-style function definitions (default in zsh)
- -k
- Use ksh-style function definitions
- -X
- Immediately load and execute the function (used inside the function itself)
- -t
- Enable execution tracing for the autoloaded function
- -m
- Treat arguments as patterns for matching function names
- +X
- Force the function to be loaded immediately without executing it
FAQ
What is the autoload command used for?
autoload marks shell function names for deferred loading. Instead of reading a function definition into memory at startup, the shell records only the function name. When the function is first called, the shell searches the directories listed in $fpath for a file matching the function name, reads its definition, and executes it. This mechanism significantly reduces shell startup time when many functions are available but rarely used. The function file should contain the function body directly (not wrapped in a `function name { }` block for zsh-style autoloading). autoload is essential for zsh's completion system (compinit), prompt themes (promptinit), and many other standard functions distributed with zsh.
How do I run a basic autoload example?
Run `autoload [function_name]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -U do in autoload?
Suppress alias expansion when the function is loaded