markdown 使用iTerm和ZSH作为终端更换

Posted 2021-05-06

# Use iTerm and ZSH as Terminal Replacement

[Setup](https://hackernoon.com/make-your-terminal-more-colourful-and-productive-with-iterm2-and-zsh-11b91607b98c), [iTerm ColorScheme](https://iterm2colorschemes.com/), [ZSH Theme](https://github.com/robbyrussell/oh-my-zsh/wiki/Themes), 

First install [Homebrew](https://docs.brew.sh/Installation.html)

## 1. Install iTerm2:

Next install iTerm2 with this: 

```
# install iTerm
brew cask install iterm2
```

## 2. Install `zsh` and `Oh My zsh`:

Then install the `zsh`, an alternative to bash. The alternative to `~/.basrc` is `~./zshrc`, which you add extra scripts to that run when loading the terminal. (Mac OSX already come with `zsh` but it is really outdated, we use the version from brew instead):

```
# install zsh
brew install zsh
```

[Oh my zsh](https://github.com/robbyrussell/oh-my-zsh) is a framework for managing your `zsh` configuration. To install it use the below command:

```
# install oh my zsh
curl -L http://install.ohmyz.sh | sh
```

## 3. Install syntax highlighting:

One of the cool things you can add with it is [syntax highlighting](https://github.com/zsh-users/zsh-syntax-highlighting):

```
# add syntax highlighting
cd ~/.oh-my-zsh && git clone git://github.com/zsh-users/zsh-syntax-highlighting.git
echo 'source ~/.oh-my-zsh/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh' >> ~/.zshrc
```

## 4. Install iTerm theme:

Now to install theme for iTerm, go to [iTerm ColorScheme](https://iterm2colorschemes.com/) and download the `zip` file. To install, follow this:

- Launch iTerm 2. Get the latest version at iterm2.com
- Type CMD+i
- Navigate to Colors tab
- Click on Load Presets
- Click on Import
- Select the `.itermcolors` file(s) of the scheme(s) you'd like to use
- Click on Load Presets and choose a color scheme.

Current favorite themes are these one:

```
- Earthsong (current one with swapped Green Normal - Cyan Bright and modified cursor color).
- Afterglow.
- Birds Of Paradise.
- Fideloper.
- Later This Evening.
- Sea Shells.
- Sea Foam Pastel.
- Slate.
```

## 5. Other Setting for iTerm:

Add this to `~/.zshrc` so that it can recognize your existing alias and environment path:

`source ~/.bash_profile`

To change default open iTerm window size go to `Preferences > Profile > Window > Setting for new Window` and increase `Columns` and `Rows`.

To hide scrollbar go to `Preferences > Appearance > Hide Scrollbars`.

## 6. Change zsh theme to `Powerlevel9k`:

To change `zsh` theme go to [Oh My ZSH theme](https://github.com/robbyrussell/oh-my-zsh/wiki/Themes) or [zsh theme](https://zshthem.es/all/).

But for now we will use [Powerlevel9k](https://github.com/bhilburn/powerlevel9k/wiki/Install-Instructions#step-1-install-powerlevel9k):

```
# install powerlevel9k theme
git clone https://github.com/bhilburn/powerlevel9k.git ~/powerlevel9k
echo 'source  ~/powerlevel9k/powerlevel9k.zsh-theme' >> ~/.zshrc
```

In order for `Powerlevel9k` to work, we need to install [Nerd font](https://github.com/ryanoasis/nerd-fonts). We will use the patched [Source Code Pro Regular](https://github.com/ryanoasis/nerd-fonts/tree/master/patched-fonts/SourceCodePro).

Download this file (download all if necessary):

[Sauce Code Pro Nerd Font Complete.ttf](https://github.com/ryanoasis/nerd-fonts/blob/master/patched-fonts/SourceCodePro/Regular/complete/Sauce%20Code%20Pro%20Nerd%20Font%20Complete.ttf)

Double click and select `Install`. After that select it in:

```
iTerm -> Preferences -> Profiles -> Text -> Font -> Change Font
```
After that add this line to `~/.zshrc` [SOURCE](https://github.com/bhilburn/powerlevel9k/wiki/Install-Instructions#option-4-install-nerd-fonts):

```
POWERLEVEL9K_MODE='nerdfont-complete'
```

## 7. Customize Powerlevel9k:

[SOURCE](https://github.com/bhilburn/powerlevel9k)

Add these to `~/.zshrc`:

```
POWERLEVEL9K_RIGHT_PROMPT_ELEMENTS=()
POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(user dir rbenv vcs)
POWERLEVEL9K_SHORTEN_DIR_LENGTH=2
```

**NOTE:** All these theme settings should be called before setting the theme or it wont take effect, example:

```
POWERLEVEL9K_RIGHT_PROMPT_ELEMENTS=()
POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(user dir rbenv vcs)
POWERLEVEL9K_SHORTEN_DIR_LENGTH=2

source  ~/powerlevel9k/powerlevel9k.zsh-theme
```