zsh-oh-my-zsh-iterm2-powerline.md

Zsh / Oh-My-Zsh + iTerm2 + Powerline

在 Fish Shell + iTerm2 + Powerline 一文中我曾介紹過如何使用 Fish Shell 與 Powerline 來取代 macOS 中內建的 Terminal 終端機與 Bash shell。雖然 Fish 預設的設定對一般使用者來說已經非常友善了，但隨著使用時間越來越長，我發現 Fish 對於 Bash 的相容性其實仍然相當不足。因此，在這篇筆記中，我將記錄如何使用 Zsh 以及 Oh-My-Zsh 來取代 Bash ，並透過 zsh-autosuggestions 與 zsh-syntax-highlighting 這兩個 plugins 來保有 Fish 的強大自動補齊及語法提示功能。同樣的，這篇開發環境配置筆記仍然會使用到 Xcode IDE 的開發環境，並需要安裝 Homebrew 套件管理工具以及 iTerm2 終端機，若還沒安裝請點擊連結安裝。

Note

Open iTerm2, and run the following commands to install Zsh and Oh-My-Zsh:

$ brew install zsh
$ chsh -s /bin/zsh
$ git clone git://github.com/robbyrussell/oh-my-zsh.git ~/.oh-my-zsh

Copy Oh-My-Zsh's zshrc.zshrc-template as .zshrc. If you have your own .zshrc file, feel free to use your's:

$ cp ~/.oh-my-zsh/templates/zshrc.zsh-template ~/.zshrc

Install plugins via Homebrew:

$ brew install zsh-autosuggestions
$ brew install zsh-syntax-highlighting

Enable plugins by adding the following lines to your .zshrc file:

source /usr/local/share/zsh-autosuggestions/zsh-autosuggestions.zsh
source /usr/local/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh

Now install Powerline:

$ brew install python
$ pip install powerline-status --user
$ pip install powerline-shell

Define your zsh prompt by adding the following codes to your .zshrc file:

function powerline_precmd() {
   PS1="$(powerline-shell --shell zsh $?)"
}

function install_powerline_precmd() {
  for s in "${precmd_functions[@]}"; do
   if [ "$s" = "powerline_precmd" ]; then
    return
   fi
  done
  precmd_functions+=(powerline_precmd)
}

if [ "$TERM" != "linux" ]; then
   install_powerline_precmd
fi

Install the Powerline Fonts by typing the commands below:

$ git clone https://github.com/powerline/fonts.git
$ ./fonts/install.sh

Finally, go to iTerm2 Preferences and click the Text tab.

Choose any font style including for Powerline

You are all set!

Screenshot

[Optional]

1. The following command allows you to change shell back to the Bash just in case:

   $ chsh -s /bin/bash
   

2. You can store your .zshrc file somewhere like GitHub or GitHub Gist, so that you won't need to configure your shell setting every time.