我的 $PATH (Macbook Pro M1) 中的多个 /opt/homebrew/opt/llvm/bin 实例

Question

我已经多次安装和卸载自制软件（取决于我是否认为我需要它）并且在卸载时我假设它的所有痕迹都会消失。但是，在我的终端中输入 echo $PATH 我得到： /opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm@12/bin:/opt/homebrew/opt/llvm@12/bin:/opt/homebrew/opt/llvm@12/bin:/opt/homebrew/opt/llvm@12/bin:/opt/homebrew/opt/llvm@12/bin:/opt/homebrew/opt/llvm@12/bin:/opt/homebrew/opt/llvm@12/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/opt/llvm/bin:/opt/homebrew/bin:/opt/homebrew/bin:/Users/[username]/.cabal/bin:/Users/[username]/.ghcup/bin:/Library/Frameworks/Python.framework/Versions/3.9/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/[username]/.cabal/bin:/Users/[username]/.ghcup/bin:/Users/[username]/.cabal/bin:/Users/[username]/.ghcup/bin

我已经在我的机器上安装了 Python 和 ghci（用于 Haskell）及其各种组件，但看起来每个组件都有多个实例。

有什么方法可以删除这些冗余实例吗？因为这样的事情，我讨厌摆弄命令行。

我在网上查看了如何“替换 $PATH”，但这听起来很危险。我正在使用带有 M1 芯片的 Macbook Pro。

Answer 1

看起来我可以使用这个命令：

PATH=$(echo :$PATH: | sed -e 's,:/opt/homebrew/opt/llvm/bin:,:,g' -e 's/^://' -e 's/:$//')

它工作正常。