Linux 向 ZSH 中的 PATH 变量添加新条目

Adding a new entry to the PATH variable in ZSH

提问by David Barreto

I'm using zsh and I'm trying to add a new entry (/home/david/pear/bin) to the PATHvariable but I don't know how.

我正在使用 zsh 并且我正在尝试向变量添加一个新条目 ( /home/david/pear/bin)PATH但我不知道如何。

The thing that confuses me the most is that there's not a single reference to a PATHvariable in my ~/.zshrcfile, but doing echo $PATHreturns:

最让我困惑的是PATH我的~/.zshrc文件中没有对变量的单一引用，而是echo $PATH返回：

/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games

So a PATHvariable is being set somewhere.

所以在PATH某处设置了一个变量。

采纳答案by Linuxios

Here:

这里：

export PATH=/home/david/pear/bin:$PATH

EDIT: This does work, but ony's answerbelow is better, as it takes advantage of the structured interface ZSH provides for variables like $PATH. This approach is standard for bash, but as far as I know, there is no reason to use it when ZSH provides better alternatives.

编辑：这确实有效，但下面的答案更好，因为它利用了 ZSH 为诸如$PATH. 这种方法是 的标准bash，但据我所知，当 ZSH 提供更好的替代方案时，没有理由使用它。

回答by ony

Actually, using ZSH allows you to use special mapping of environment variables. So you can simply do:

实际上，使用 ZSH 允许您使用环境变量的特殊映射。所以你可以简单地做：

# append
path+=('/home/david/pear/bin')
# or prepend
path=('/home/david/pear/bin' $path)
# export to sub-processes (make it inherited by child processes)
export PATH

For me that's a very neat feature which can be propagated to other variables. Example:

对我来说，这是一个非常巧妙的功能，可以传播到其他变量。例子：

typeset -T LD_LIBRARY_PATH ld_library_path :

回答by Micah Elliott

You can append to your PATHin a minimal fashion. No need for parentheses unless you're appending more than one element. It also usually doesn't need quotes. So the simple, short way to appendis:

您可以以PATH最小的方式附加到您的。除非您附加多个元素，否则不需要括号。它通常也不需要引号。所以简单、简短的追加方法是：

path+=/some/new/bin/dir

Common usage

常见用法

Then the common pattern for testing a new script/executable becomes:

然后测试新脚本/可执行文件的常见模式变为：

path+=$PWD/.
# or
path+=$PWD/bin

This lower-case syntax is using pathas an array, yet also affects its upper-case partner equivalent, PATH(to which it is "bound" via typeset).

这种小写语法path用作array，但也会影响它的大写伙伴等价物，PATH（它通过“绑定” typeset）。

(Notice that no :is needed/wanted as a separator.)

（注意，没有:需要/希望作为隔板。）

Related tidbits

相关花絮

Treating paththis way (as an array) also means: no need to do a rehashto get the newly pathed commands to be found.

以path这种方式（作为数组）处理也意味着：无需执行 a rehash即可找到新路径的命令。

Also take a look at vared pathas a dynamic way to edit pathand other things.

也看看vared path作为一种动态的方式来编辑path和其他东西。

You may only be interested in pathfor this question, but since we're talking about exports and arrays, note that arrays generally cannot be exported.

您可能只path对这个问题感兴趣，但由于我们谈论的是导出和数组，请注意 通常无法导出数组。

You can even prevent PATHfrom taking on duplicate entries(refer to thisand this):

您甚至可以防止PATH重复输入（请参阅 this和this）：

typeset -U path

回答by Siva Praveen

one liner, without opening ~/.zshrcfile

一个衬垫，无需打开~/.zshrc文件

echo -n 'export PATH=~/bin:$PATH' >> ~/.zshrc

or

或者

echo -n 'export PATH=$HOME/bin:$PATH' >> ~/.zshrc

To see the effect, do source ~/.zshrcin the same tab or open a new tab

要查看效果，请source ~/.zshrc在同一选项卡中执行或打开新选项卡

回答by Dimitar

OPTION 1:Add this line to ~/.zshrc:

选项 1：将此行添加到 ~/.zshrc：

export "PATH=$HOME/pear/bin:$PATH"

After that you need to run source ~/.zshrcin order your changes to take affect OR close this window and open a new one

之后，您需要运行source ~/.zshrc以使您的更改生效或关闭此窗口并打开一个新窗口

OPTION 2:execute it inside the terminal console to add this path only to the current terminal window session. When you close the window/session, it will be lost.

选项 2：在终端控制台内执行它以仅将此路径添加到当前终端窗口会话。当您关闭窗口/会话时，它将丢失。

回答by saneryee

1. Added path to ~/.zshrc

   sudo vi ~/.zshrc

   add new path

   export PATH="$PATH:[NEW_DIRECTORY]/bin"
   

2. Update ~/.zshrc

   Save ~/.zshrc

   source ~/.zshrc

3. Check PATH

   echo $PATH

1. 添加到 ~/.zshrc 的路径

   sudo vi ~/.zshrc

   添加新路径

   export PATH="$PATH:[NEW_DIRECTORY]/bin"
   

2. 更新 ~/.zshrc

   保存 ~/.zshrc

   source ~/.zshrc

3. 检查路径

   echo $PATH