列出Bash中定义的函数 [英] Listing defined functions in Bash

问题描述

我正在尝试用bash编写一些代码，这些代码使用自省功能来选择要调用的适当函数.

I'm trying to write some code in bash which uses introspection to select the appropriate function to call.

确定候选人需要知道定义了哪些职能.仅使用参数扩展即可在bash中列出定义的变量很容易:

Determining the candidates requires knowing which functions are defined. It's easy to list defined variables in bash using only parameter expansion:

$ prefix_foo="one"
$ prefix_bar="two"
$ echo "${!prefix_*}"
prefix_bar prefix_foo

但是，对 function 执行此操作似乎需要过滤set的输出-一种更加随意的方法.

However, doing this for functions appears to require filtering the output of set -- a much more haphazard approach.

有正确的方法吗?

推荐答案

compgen :

compgen -A function   # compgen is a shell builtin

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