bash 如何列出在我的 shell 中定义的函数？
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How do I list the functions defined in my shell?
提问by Dov
I can type alias to show a list of all the aliases.
我可以输入 alias 来显示所有别名的列表。
But for functions, all I can do is grep my .bash_profile.
但是对于函数，我所能做的就是 grep 我的.bash_profile.
That only gets the ones in that file, not those defined in subsidiary files or dynamically.
这只获取该文件中的那些，而不是那些在附属文件中或动态定义的。
Is there a more convenient way to find out what functions are currently defined?
有没有更方便的方法来找出当前定义的函数？
回答by The Archetypal Paul
declare -F
declare -F
Function names and definitions may be listed with the
-foption to thedeclarebuiltin command (see Bash Builtins). The-Foption todeclarewill list the function names only (and optionally the source file and line number).
函数名称和定义可能会与内置命令的
-f选项一起 列出declare（请参阅 Bash 内置命令）。该-F选项declare将列出函数名只（以及可选的源文件和行号）。
回答by Randall Bohn
Assuming bash shell:
假设 bash shell：
typeset -f
will list the functions.
将列出功能。
typeset -F
will list just the function names.
将只列出函数名称。
回答by John Lawrence Aspden
declare -F
will give you the names of all functions
会给你所有函数的名称
type function_name
will give you the source for a particular function
将为您提供特定功能的来源
回答by Lri
declare -Factually prints declare commands and not only function names:
declare -F实际上打印声明命令而不仅仅是函数名称：
$ declare -F
declare -f function1
declare -f function2
You can use compgen -A functionto print only function names:
您可以使用compgen -A function仅打印函数名称：
$ compgen -A function
function1
function2
回答by Robert
typesetis obsolete, please use:
排版已过时，请使用：
declare -f
or
或者
declare -f function_name
or
或者
type function_name
回答by AtomicKobold
set | grep " ()"
In place of grepyou can also use fgrepor hgrep(hgrep is my personal favorite, it's grep but it hi-lites the 'grep-ped' result.
您还可以使用fgrep或hgrep代替grep（hgrep 是我个人的最爱，它是 grep 但它可以简化“grep-ped”的结果。
hgrepcan be found here: ACME Labs hgrep
hgrep可以在这里找到：ACME 实验室 hgrep
回答by DavidT
I'm no expert at this, still learning, but after finding this question and its answer because I wanted the same, I wrote the following (based on the "The Archetypal Paul's declare" answer) to give me ultimately what I was after: a formatted list of both aliases and functions:
我不是这方面的专家，仍在学习，但在找到这个问题及其答案后，因为我想要相同的答案，我写了以下内容（基于“原型保罗的宣言”答案），最终给我我所追求的：别名和函数的格式化列表：
function functionaliaslist() {
echo
echo -e "3[1;4;32m""Functions:""3[0;34m"
declare -F | awk {'print '}
echo
echo -e "3[1;4;32m""Aliases:""3[0;34m"
alias | awk {'print '} | awk -F= {'print '}
echo
echo -e "3[0m"
}
That was before I saw Lri's answer, and so extrapolating from that, I replace the declareand aliaslines with appropriate compgencommands instead, to get:
那是在我看到Lri's answer 之前，因此从中推断，我用适当的命令替换declare和alias行compgen，以获得：
function functionaliaslist() {
echo
echo -e "3[1;4;32m""Functions:""3[0;34m"
compgen -A function
echo
echo -e "3[1;4;32m""Aliases:""3[0;34m"
compgen -A alias
echo
echo -e "3[0m"
}
Woks a treat for what I wanted. Sharing in case it helps anyone else.
炒菜是我想要的。分享以防对其他人有帮助。
There are a multitude of other "actions" available to compgen -A [action](and other options for compgenof course). I found a good write-up herewhich also includes a link to the man page (because man compgendoesn't work in some cases).
还有许多其他“操作”可用compgen -A [action]（compgen当然还有其他选项）。我在这里找到了一篇很好的文章，其中还包含一个指向手册页的链接（因为man compgen在某些情况下不起作用）。
