zsh 内置的 "where" 的目的是什么？
What is the purpose of the "where" builtin in zsh?
我发现 google 不可能做到这一点，并且在手册页中找不到信息。
根据记录的保留字列表，where 不是 bash 中的关键字。
https://www.gnu.org/software/bash/manual/html_node/Reserved-Word-Index.html
where [ -wpms ] name ...
Equivalent to whence -ca.
--
whence [ -vcwfpams ] name ...
For each name, indicate how it would be interpreted if used as a command name.
-c Print the results in a csh-like format. This takes precedence over
-a Do a search for all occurrences of name throughout the command path. Normally only the first occurrence is printed. -v.
来自http://zsh.sourceforge.net/Doc/Release/Shell-Builtin-Commands.html：
where [ -wpms ] name ...
Equivalent to whence -ca.
和：
whence [ -vcwfpams ] name ... For each name, indicate how it would be interpreted if used as a command name.
-v Produce a more verbose report.
-c Print the results in a csh-like format. This takes precedence over -v.
-w For each name, print ‘name: word’ where word is one of alias, builtin, command, function, hashed, reserved or none, according as
name corresponds to an alias, a built-in command, an external command,
a shell function, a command defined with the hash builtin, a reserved
word, or is not recognised. This takes precedence over -v and -c.
-f Causes the contents of a shell function to be displayed, which would otherwise not happen unless the -c flag were used.
-p Do a path search for name even if it is an alias, reserved word, shell function or builtin.
-a Do a search for all occurrences of name throughout the command path. Normally only the first occurrence is printed.
-m The arguments are taken as patterns (should be quoted), and the information is displayed for each command matching one of these
patterns.
-s If a pathname contains symlinks, print the symlink-free pathname as well.
我发现 google 不可能做到这一点，并且在手册页中找不到信息。
根据记录的保留字列表，where 不是 bash 中的关键字。
https://www.gnu.org/software/bash/manual/html_node/Reserved-Word-Index.html
where [ -wpms ] name ... Equivalent to whence -ca.
--
whence [ -vcwfpams ] name ... For each name, indicate how it would be interpreted if used as a command name.
-c Print the results in a csh-like format. This takes precedence over
-a Do a search for all occurrences of name throughout the command path. Normally only the first occurrence is printed. -v.
来自http://zsh.sourceforge.net/Doc/Release/Shell-Builtin-Commands.html：
where [ -wpms ] name ... Equivalent to whence -ca.
和：
whence [ -vcwfpams ] name ... For each name, indicate how it would be interpreted if used as a command name.
-v Produce a more verbose report.
-c Print the results in a csh-like format. This takes precedence over -v.
-w For each name, print ‘name: word’ where word is one of alias, builtin, command, function, hashed, reserved or none, according as name corresponds to an alias, a built-in command, an external command, a shell function, a command defined with the hash builtin, a reserved word, or is not recognised. This takes precedence over -v and -c.
-f Causes the contents of a shell function to be displayed, which would otherwise not happen unless the -c flag were used.
-p Do a path search for name even if it is an alias, reserved word, shell function or builtin.
-a Do a search for all occurrences of name throughout the command path. Normally only the first occurrence is printed.
-m The arguments are taken as patterns (should be quoted), and the information is displayed for each command matching one of these patterns.
-s If a pathname contains symlinks, print the symlink-free pathname as well.