zsh PATH 的奇怪行为 [英] Weird behaviour with zsh PATH

问题描述

我只是鼓励今天 zsh 出现一个奇怪的问题.

I just encourage a weird problem with zsh today.

我的环境是 Mac OS X Yosemite，zsh 5.0.5 (x86_64-apple-darwin14.0)

My environment is Mac OS X Yosemite, zsh 5.0.5 (x86_64-apple-darwin14.0)

在 .zshrc 中，我手动将 PATH 变量设置为类似

In .zshrc, I have manually set the PATH variable to something like

export PATH="$PATH:~/.composer/vendor/bin"

在终端中尝试echo $PATH，结果如预期(包含~/.composer/vendor/bin).然后尝试从 ~/.composer/vendor/bin 执行一个二进制文件，它总是会返回zsh: command not found"错误.

Try echo $PATH in terminal, the result is as expected (contained ~/.composer/vendor/bin). Then try executing a binary from ~/.composer/vendor/bin, It'll always return me "zsh: command not found" error.

尝试切换到 bash，echo $PATH 也符合预期，结果与 zsh shell 相同.尝试从 ~/.composer/vendor/bin 执行一个二进制文件，没有发现问题.似乎 PATH var 在 bash shell 上运行良好.

Try switching to bash, echo $PATH is also as expected, have the same result as zsh shell. Try executing a binary from ~/.composer/vendor/bin, no problem found. Seem the PATH var is acting well on the bash shell.

我的 zsh shell 有什么问题?

What's wrong with my zsh shell?

谢谢

推荐答案

尝试使用 $HOME 而不是 ~.在许多情况下，shell 不会在您期望的情况下扩展 ~，通常最好使用 $HOME.~ 实际上只是作为交互式使用的捷径.(我能回忆起首选 ~ 的唯一情况是在 .gitalias 中，其中 ~ 被扩展而变量没有.)

Try using $HOME instead of ~. In many situations, shells do not expand ~ when you expect them to and it is usually better to use $HOME. ~ is really only intended to be a short cut for interactive use. (The only case I can recall where ~ was preferred was in a .gitalias, where ~ was expanded and variables were not.)

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