oh-my-zsh

参考
https://github.com/ohmyzsh/ohmyzsh#advanced-installation
中 Manual Installation 的步骤即可，不用像网上教程那样手工修改install.sh。

Manual Installation

1. Clone the repository （从可以联网的地方先下载好，并改名~/.oh-my-zsh）

git clone https://github.com/ohmyzsh/ohmyzsh.git ~/.oh-my-zsh

2. Optionally, backup your existing ~/.zshrc file

cp ~/.zshrc ~/.zshrc.orig

3. Create a new zsh configuration file

You can create a new zsh config file by copying the template that we have included for you.

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

4. Change your default shell

chsh -s $(which zsh)

You must log out from your user session and log back in to see this change.

5. Initialize your new zsh configuration

Once you open up a new terminal window, it should load zsh with Oh My Zsh’s configuration.

zsh-autosuggestion

参考：
https://github.com/zsh-users/zsh-autosuggestions/blob/master/INSTALL.md#manual-git-clone
从可以联网的地方先下载好，放到对应位置即可。