How to install and configure Zsh

Zsh and bash are shell scripts that can run in Linux. The default is bash. To use Zsh, you need to install it separately. The following small series will be for Zsh in Linux. Installation and configuration for everyone to make a detailed introduction, interested friends can come to understand.

1. Install

mounted zsh

zsh mounted in Gentoo, we need to install app-shells /zsh (zsh itself) and emerge through app- Shells/zsh-completion (zsh completion script) two packages.

Code Listing 1.1: Installing zsh via emerge

# emerge zsh zsh-completion

Entering zsh

When you first run zsh, you Will get some information as follows. Because we will create an init file later, so you can skip this one function menu.

Code Listing 1.2: Skip initial configuration

$ zsh

This is the Z Shell configuration function for new users, zsh-newuser-install.

You are seeing this message because you have no zsh startup files

(the files .zshenv, .zprofile, .zshrc, .zlogin in the directory

~). This function can help you with a few settings that should

make your use of the shell easier.

You can:

(q) Quit and do nothing. The function Will be run again next time.

(0) Exit, creating the file ~/.zshrc containing just a comment.

That will prevent this function being run again.

(1) Continue to the main menu.

--- Type one of the keys in parentheses --- q

2. Configuration

Introduction

Running zsh will start zsh for a session. If you want a permanent solution, please refer to the chapter on saving settings. After the installation is complete, zsh may seem very simple and very limited in functionality. In order to change this situation, you need to modify several configurations.

Advanced Tab Completion

You need to run the following command to enable zsh's tab completion system:

Code 2.1: Open Completion System

% autoload -U compinit

% compinit

The default completion style is very normal and simple. If you want to improve its appearance, run the following command:

Code 2.2: Improve completion style

% zstyle ‘:completion:*:descriptions’ format ‘%U%B %d%b%u’

% zstyle ‘:completion:*:warnings’ format ‘%BSorry, no matches for: %d%b’

Command Error Correction

It is also a good idea to enable the command automatic error correction function:

Code 2.3: Turn on error correction function

% setopt correctall

prompt
< The current prompt may seem boring, but we can fix it in a few simple steps. First, we need to initialize the advanced command prompt support:

Code 2.4: Turn on the advanced command prompt function

% autoload -U promptinit

% promptinit

We can use the prompt -p command to list the available prompt samples. Now we can activate one we like:

Code 2.5: Select a prompt sample

(Use the prompt of your choice instead of “gentoo”)

% Prompt gentoo

Note: If you are trying a different prompt and you don't want to see an example of each prompt, then you can use prompt -l to list the available prompts.

Another option is to create your own prompt. You need to set the PS1 environment variable to implement this idea.

Code Listing 2.6: A simple custom prompt

% export PS1=“[Test Prompt] 》 ”

[Test Prompt] 》

It's great to be able to create custom text prompts, while zsh also provides a number of escape sequences to allow you to insert system information into the prompt. Some of the available escape sequences are as follows:

Escape sequence print effect

%T system time (hour: minute)

%* system time (hour: minute: second) )

%DSystem Date (Year-Month-Day)

%nYour Username

%B - %b Start to End Use Bold Print
>

%U - %u starts to end with underline printing

%d your current working directory

%~ Relative path of your current working directory relative to ~

Hostname of %M computer

%m of computer's hostname (truncate before the first period)

%lYour current tty

You only need Inserting these escape sequences into the environment variable PS1 will do so, and zsh will automatically parse them.

Code Listing 2.7: A more complicated prompt

% export PS1=“[%* - %D] %d %% ”

[08:44 :23 - 06-02-18] /home/username %
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