What is Oh My Zsh

  • Oh My Zsh is a community-driven command line tool, and as its homepage says, Oh My Zsh is a way of life. It is based on the zsh command line and offers theme configuration, plugin mechanism, and already built-in convenience operations. It gives us a whole new way to use the command line.
  • Oh My Zsh is an extended toolset based on the zsh command line, providing a rich set of extended features.

Official Website

Oh My Zsh official website

If you are interested in more, you can go to the official website for details.


  • Install zsh to replace bash, etc. The default shell for macOS systems is currently zsh, other Linux systems may need to install zsh first.


    # Install zsh
    apt install zsh
    # set zsh as the default shell (if you don't set it, start zsh with the direct zsh command)
    chsh -s /bin/zsh


    yum install zsh
    chsh -s /bin/zsh

    Same for the others.

  • Install git, same as above using apt or yum package manager.

  • Finally you need curl or wget, install the same as above.


curl installation

sh -c "$(curl -fsSL"

wget installation

sh -c "$(wget -O -)"

There is no difference between the two installs.


I usually use the steeef theme that comes with it, which is pretty clean and easy to use.

If you want to change the theme, just edit the ~/.zshrc file and replace ZSH_THEME with the theme you like after it.

Change Theme

The .zshrc file.

The .zshrc file does the same thing as the .bashrc file. The default shell for most unix systems used to be bash, and the .bashrc file is the configuration file for bash.

The relevant explanation in the online help file, as viewed with the man bash command, is as follows. .bashrc - The individual per-interactive-shell startup file.

This file mainly stores personalized settings, such as command aliases, paths, etc.

Each time you modify .bashrc, use source ~/.bashrc (or . ~/.bashrc) to immediately load the modified settings and make them take effect. Typically .bashrc is called explicitly in the .bash_profile file.

When you log in to linux and start bash, it will first read the ~/.bash_profile file, so ~/.bashrc will be executed and your personalized settings will take effect.


The management of omz plugins is very simple, there are two plugins directories, where user is your username:

  • /Users/user/.oh-my-zsh/plugins

    The official plugins directory. This directory is already preloaded with many useful plugins, which only need to be activated manually.

  • /Users/user/.oh-my-zsh/custom/plugins

    Third-party plugins directory, shortcut command: $ZSH_CUSTOM/plugins.

To install the plugins, just download the plugins to the third-party plugins directory, and then add the name of the corresponding plugins to the plugins variable in the ~/.zshrc configuration file.

Download Plugin


# Command syntax highlighting
git clone ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-syntax-highlighting

Command syntax highlighting


# Command auto-completion
git clone ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-autosuggestions

Command auto-completion

If you feel that Tab key is not convenient for completing, you can also customize the shortcut keys for completing. For example, to set comma completion, just add the following line to ~/.zshrc file.

bindkey ',' autosuggest-accept

Enable Plugin

In the .zshrc file set.

plugins=(git zsh-syntax-highlighting zsh-autosuggestions)

Enable other plugins in the same way.

Configuring to take effect

One way to do this is to exit the terminal and reopen it, another, more common way is to use the source command I described earlier.

source ~/.zshrc


Oh My Zsh

安装oh my zsh插件