为 WSL2 配置代理

以代理在 7890 端口的 clash 为例。

打开 Allow LAN 选项。（如果在公网环境下慎选，特指某华校园网）

可以在 Clash 配置文件中添加鉴权确保安全性，在 Profile 选项卡内，右键当前配置文件 Edit，添加如下内容：

# authentication of local SOCKS5/HTTP(S) server
authentication:
 - "user1:pass1"
 - "user2:pass2"

在控制面板中找到 允许应用或功能通过 Windows Defender防火墙 并勾选 clash-win64.exe

export hostip=$(cat /etc/resolv.conf |grep -oP '(?<=nameserver\ ).*')
export https_proxy="http://${hostip}:7890"
export http_proxy="http://${hostip}:7890"

在 Ubuntu 中使用 Clash

下载

在 clash 项目地址 release 处下载适用于 Linux 的 Clash。

解压并将其重命名为 clash

gunzip clash-linux-amd64-v1.10.0.gz
mv clash-linux-amd64-v1.10.0 clash

为 clash 添加可执行权限：

chmod u+x clash

Clash 运行时需要 Country.mmdb 文件，当第一次启动 Clash 时（使用 ./clash 命令） 会自动下载（会下载至 /home/XXX/.config/clash 文件夹下）。自动下载可能会因网络原因较慢，可以手动下载。

Country.mmdb 文件利用 GeoIP2 服务能识别互联网用户的地点位置，以供规则分流时使用。

配置文件

一般的网络服务提供了 Clash 订阅链接，可以直接下载链接指向的文件内容，保存到 config.yaml 中。

Clash as a daemon

关于 WSL2 支持 systemd，可以参考官方文档。

将 Clash 转变为系统服务，从而使得 Clash 实现常驻后台运行、开机自启动等。

普通用户需要 sudo 权限。

配置 systemd 服务

Linux 系统使用 systemd 作为启动服务器管理机制，首先把 Clash 可执行文件拷贝到 /usr/local/bin 目录，相关配置拷贝到 /etc/clash 目录。

sudo mkdir /etc/clash
sudo cp clash /usr/local/bin
sudo cp config.yaml /etc/clash/
sudo cp Country.mmdb /etc/clash/

创建 systemd 服务配置文件 sudo vim /etc/systemd/system/clash.service：

[Unit]
Description=Clash daemon, A rule-based proxy in Go.
After=network.target

[Service]
Type=simple
Restart=always
ExecStart=/usr/local/bin/clash -d /etc/clash

[Install]
WantedBy=multi-user.target

使用 systemctl

使用以下命令，让 Clash 开机自启动：

sudo systemctl enable clash

然后开启 Clash：

sudo systemctl start clash

查看 Clash 日志：

sudo systemctl status clash
sudo journalctl -xe

DashBoard 外部控制

外部控制端口为 9090，因此也可以访问该链接，输入 IP 地址（需本机可以访问的 IP）以及端口号 9090，来进入 Clash Dashboard 进行节点的选择。也可以在服务器自行搭建 Clash Dashboard，请参见该项目。不过 Clash Dashboard 用处不大，使用订阅转换后的配置文件包含了自动选择的功能，Clash 会自动选择延迟最低的节点。

设置密码

export 命令其他用户执行后也可以使用该代理，此时通过可以更换代理端口、添加密码等措施加以限制。修改 /etc/clash/config.yaml 文件部分配置：

mixed-port: 12345
authentication:
  - "用户名1:密码1"
  - "用户名2:密码2"
allow-lan: true
mode: Rule
log-level: info
external-controller: :9090

mixed-port: 12345 就是混合代理端口，即使用代理时所指定的端口。然后需要重启 Clash，命令为：

sudo systemctl restart clash

根据上述配置文件，export 命令变为

export https_proxy=http://用户名1:密码1@127.0.0.1:12345 http_proxy=http://用户名1:密码1@127.0.0.1:12345 all_proxy=socks5://用户名1:密码1@127.0.0.1:12345

TUN 模式

新版的 Clash Premium 内核支持 TUN 模式，且目前已支持 Linux 系统下的 auto-route 和 auto-detect-interface，无需手动设置转发表，可以方便快捷的实现 透明网关（旁路由） 的功能。

首先需要下载 Clash Premium 版本，替换上面的 clash 文件。接着需要设置 Linux 系统，开启转发功能。编辑文件 /etc/sysctl.conf，添加以下内容：

net.ipv4.ip_forward=1

保存退出后，执行以下命令使修改生效：

sudo sysctl -p

然后接着需要关闭系统的 DNS 服务，使用以下命令：

sudo systemctl stop systemd-resolved
sudo systemctl disable systemd-resolved

关于代理环境下 DNS 解析行为的深入探讨，可以参见浅谈在代理环境中的 DNS 解析行为以及我有特别的 DNS 配置和使用技巧。

接着需要设置 Clash 的配置文件，添加以下内容：

dns:
  enable: true
  listen: 0.0.0.0:53
  enhanced-mode: fake-ip
  nameserver:
    - 114.114.114.114
  fallback:
    - 8.8.8.8
tun:
  enable: true
  stack: system # or gvisor
  dns-hijack:
    - 8.8.8.8:53
    - tcp://8.8.8.8:53
    - any:53
    - tcp://any:53
  auto-route: true # auto set global route
  auto-detect-interface: true # conflict with interface-name

最后重启 Clash 服务即可，这样流量就会通过 TUN 接口转发，同时利用强大的分流规则，实现按需代理。也可以设置局域网内的网关地址和 DNS 服务器地址，实现透明网关。

自动更新订阅

Clash 是一个基于 Golang 开发的代理工具，支持 Vmess, Shadowsocks, Snell 和 SOCKS5 协议。Clash 也有 Android 版本和 OS X 版本，配置文件通用，但是对于 Linux，目前似乎还没有人开发自定订阅配置的功能，Clash 的作者开发了一个 Web UI 叫 Clash Dashboard，可以在网页中调用相应 Restful API 调整相关配置，目前的版本（0.3.0）并没有配置订阅功能。

Clash 本身可以根据配置文件做到负载均衡和自动切换，因此，如果你的代理服务商提供了在线配置，能够做到实时更新配置的话，将是最省心的选择。

本文通过 systemctl 来管理 Clash 的进程，对应 clash.service 文件，通过两个脚本 start-clash.sh 和 stop-clash.sh 来管理 Clash 的启停，具体配置如下。

# edit and save this file to /usr/lib/systemd/system/clash.service
[Unit]
Description=clash
After=network.target

[Service]
WorkingDirectory="your home directory"/.config/clash
ExecStart="your home directory"/.config/clash/start-clash.sh
ExecStop="your home directory"/.config/clash/stop-clash.sh
Environment="HOME=your home directory"
Environment="CLASH_URL=your subscribe address"

[Install]
WantedBy=multi-user.target

#!/bin/bash
# save this file to ${HOME}/.config/clash/start-clash.sh

# save pid file
echo $$ > ${HOME}/.config/clash/clash.pid

diff ${HOME}/.config/clash/config.yaml <(curl -s ${CLASH_URL})
if [ "$?" == 0 ]
then
    /usr/bin/clash
else
    TIME=`date '
    cp ${HOME}/.config/clash/config.yaml "${HOME}/.config/clash/config.yaml.bak${TIME}"
    curl -L -o ${HOME}/.config/clash/config.yaml ${CLASH_URL}
    /usr/bin/clash
fi

#!/bin/bash
# save this file to ${HOME}/.config/clash/stop-clash.sh

# read pid file
PID=`cat ${HOME}/.config/clash/clash.pid`
kill -9 ${PID}
rm ${HOME}/.config/clash/clash.pid

配置添加完成后，执行以下代码就可以启动Clash并设置为开机自启动。

systemctl enable clash
systemctl start clash

为 Ubuntu 配置代理

使用环境变量 http_proxy 和 https_proxy 来修改。

将环境变量设置为形如 http://user:passwd@ip:port

如果用户名和密码中含有特殊字符，如 @ # ! $ 等，需要使用

@==>
$==>
#==>
!==>

bash

在 ~/.bash_profile 中添加如下内容：

function proxy_on() {
    export http_proxy=http://127.0.0.1:7890
    export https_proxy=\$http_proxy
    echo -e "终端代理已开启。"
}

function proxy_off(){
    unset http_proxy https_proxy
    echo -e "终端代理已关闭。"
}

zsh

在 ~/.zshrc 配置文件中添加如下内容：

proxy_on() {
    export http_proxy=http://127.0.0.1:7890
    export https_proxy=\$http_proxy
    echo -e "终端代理已开启。"
}

proxy_off(){
    unset http_proxy https_proxy
    echo -e "终端代理已关闭。"
}

之后可以在终端输入 proxy_on 打开代理，输入 proxy_off 关闭代理。

miniconda 的配置

本文以 Miniconda3-py39_22.11.1-1-Linux-x86_64.sh 为例

随便找个什么地方把文件搞到 Ubuntu 里。比如 这个链接

直接运行，一顿 ENTER 再输个 yes。

接下来就会在当前目录（用户根目录？）下出现一个 miniconda3 文件夹。

运行 ./miniconda/bin/conda init <bash/zsh/...> 之后重启 Ubuntu。

之后就可以愉快地使用 conda 了。

conda 基础指令

1. conda create -n <name> python=<2.7/3.7/3.8/...>
   创建一个 python 环境，名称为 name ，使用 python 2.7/3.7/3.8/...
2. conda activate <name>
   启用环境 name。
3. conda deactivate
   退出当前环境。
4. conda info -e
   查看所有环境的信息。
5. conda remove -n <name> --all
   删除环境 name

zsh 的配置

1. 下载 zsh
   sudo apt install zsh
2. 检查安装成功
   cat /etc/shells 结果出现 /bin/zsh
3. 将 zsh 指定为默认终端
   sudo chsh -s /bin/zsh <username> 其中 <username> 为自己的用户名

oh-my-zsh 的配置

项目地址

可以根据项目地址中的介绍安装。

一点 oh-my-zsh 插件推荐

官方插件一览

1. zsh-autosuggestions 会记录之前输入过的所有命令，并且自动匹配可能想要输入的命令。可以使用 Ctrl+e 一键补全。项目地址
2. zsh-syntax-highlighting 提示当前命令是否正确，错误红色，正确绿色。项目地址
3. z 会将你每次 cd 过的目录存起来放到 ~/.z 文件中。通过正则匹配，并带你到使用频率最高的目录。官方插件，直接在配置文件中启用。
   1. -r：导航到排名最高的目录
   2. -t：导航到最近访问的目录
   3. -l：按使用频率列出目录
   4. -x <dir>：删除不想要的目录
4. extract 使用 x 命令一键解压诸多格式的压缩文件。官方插件，直接在配置文件中启用。

官方主题

链接

agnoster 主题配置 （Window Terminal + WSL2）

在配置文件中改好主题后会出现三角形无法正确显示的情况，需要修改 Windows Terminal 的字体。

在 Powerline-patched font 下载 zip，并安装 DejaVuSansMono 字体（可根据个人喜好更改）

在 Windows Terminal 中将 Ubuntu 使用的字体更改为 DejaVu Sans Mono for Powerline 。

至此乱码问题解决。

色彩

色彩可以更改 ~/.oh-my-zsh/themes/agnoster.zsh-theme。

我的配置如下：

# vim:ft=zsh ts=2 sw=2 sts=2
#
# agnoster's Theme - https://gist.github.com/3712874
# A Powerline-inspired theme for ZSH
#
# # README
#
# In order for this theme to render correctly, you will need a
# [Powerline-patched font](https://github.com/Lokaltog/powerline-fonts).
# Make sure you have a recent version: the code points that Powerline
# uses changed in 2012, and older versions will display incorrectly,
# in confusing ways.
#
# In addition, I recommend the
# [Solarized theme](https://github.com/altercation/solarized/) and, if you're
# using it on Mac OS X, [iTerm 2](https://iterm2.com/) over Terminal.app -
# it has significantly better color fidelity.
#
# If using with "light" variant of the Solarized color schema, set
# SOLARIZED_THEME variable to "light". If you don't specify, we'll assume
# you're using the "dark" variant.
#
# # Goals
#
# The aim of this theme is to only show you *relevant* information. Like most
# prompts, it will only show git information when in a git working directory.
# However, it goes a step further: everything from the current user and
# hostname to whether the last call exited with an error to whether background
# jobs are running in this shell will all be displayed automatically when
# appropriate.

### Segment drawing
# A few utility functions to make it easy and re-usable to draw segmented prompts

CURRENT_BG='NONE'

case ${SOLARIZED_THEME:-dark} in
    light) CURRENT_FG='white';;
    *)     CURRENT_FG='black';;
esac

# Special Powerline characters

() {
  local LC_ALL="" LC_CTYPE="en_US.UTF-8"
  # NOTE: This segment separator character is correct.  In 2012, Powerline changed
  # the code points they use for their special characters. This is the new code point.
  # If this is not working for you, you probably have an old version of the
  # Powerline-patched fonts installed. Download and install the new version.
  # Do not submit PRs to change this unless you have reviewed the Powerline code point
  # history and have new information.
  # This is defined using a Unicode escape sequence so it is unambiguously readable, regardless of
  # what font the user is viewing this source code in. Do not replace the
  # escape sequence with a single literal character.
  # Do not change this! Do not make it '\u2b80'; that is the old, wrong code point.
  SEGMENT_SEPARATOR=$'\ue0b0'
}

# Begin a segment
# Takes two arguments, background and foreground. Both can be omitted,
# rendering default background/foreground.
prompt_segment() {
  local bg fg
  [[ -n $1 ]] && bg=
  [[ -n $2 ]] && fg=
  if [[ $CURRENT_BG != 'NONE' && $1 != $CURRENT_BG ]]; then
    echo -n "
  else
    echo -n 
  fi
  CURRENT_BG=$1
  [[ -n $3 ]] && echo -n $3
}

# End the prompt, closing any open segments
prompt_end() {
  if [[ -n $CURRENT_BG ]]; then
    echo -n "
  else
    echo -n 
  fi
  echo -n 
  CURRENT_BG=''
}

### Prompt components
# Each component will draw itself, and hide itself if no information needs to be shown

# Context: user@hostname (who am I and where am I)
prompt_context() {
  if [[ "$USERNAME" != "$DEFAULT_USER" || -n "$SSH_CLIENT" ]]; then
    prompt_segment white black 
  fi
}

# Git: branch/detached head, dirty status
prompt_git() {
  (( $+commands[git] )) || return
  if [[ "$(git config --get oh-my-zsh.hide-status 2>/dev/null)" = 1 ]]; then
    return
  fi
  local PL_BRANCH_CHAR
  () {
    local LC_ALL="" LC_CTYPE="en_US.UTF-8"
    PL_BRANCH_CHAR=$'\ue0a0'         # 
  }
  local ref dirty mode repo_path

   if [[ "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = "true" ]]; then
    repo_path=$(git rev-parse --git-dir 2>/dev/null)
    dirty=$(parse_git_dirty)
    ref=$(git symbolic-ref HEAD 2> /dev/null) || ref="➦ $(git rev-parse --short HEAD 2> /dev/null)"
    if [[ -n $dirty ]]; then
      prompt_segment yellow black
    else
      prompt_segment green $CURRENT_FG
    fi

    local ahead behind
    ahead=$(git log --oneline @{upstream}.. 2>/dev/null)
    behind=$(git log --oneline ..@{upstream} 2>/dev/null)
    if [[ -n "$ahead" ]] && [[ -n "$behind" ]]; then
      PL_BRANCH_CHAR=$'\u21c5'
    elif [[ -n "$ahead" ]]; then
      PL_BRANCH_CHAR=$'\u21b1'
    elif [[ -n "$behind" ]]; then
      PL_BRANCH_CHAR=$'\u21b0'
    fi

    if [[ -e "${repo_path}/BISECT_LOG" ]]; then
      mode=" <B>"
    elif [[ -e "${repo_path}/MERGE_HEAD" ]]; then
      mode=" >M<"
    elif [[ -e "${repo_path}/rebase" || -e "${repo_path}/rebase-apply" || -e "${repo_path}/rebase-merge" || -e "${repo_path}/../.dotest" ]]; then
      mode=" >R>"
    fi

    setopt promptsubst
    autoload -Uz vcs_info

    zstyle ':vcs_info:*' enable git
    zstyle ':vcs_info:*' get-revision true
    zstyle ':vcs_info:*' check-for-changes true
    zstyle ':vcs_info:*' stagedstr '✚'
    zstyle ':vcs_info:*' unstagedstr '±'
    zstyle ':vcs_info:*' formats '
    zstyle ':vcs_info:*' actionformats '
    vcs_info
    echo -n "${${ref:gs
  fi
}

prompt_bzr() {
  (( $+commands[bzr] )) || return

  # Test if bzr repository in directory hierarchy
  local dir="$PWD"
  while [[ ! -d "$dir/.bzr" ]]; do
    [[ "$dir" = "/" ]] && return
    dir="${dir:h}"
  done

  local bzr_status status_mod status_all revision
  if bzr_status=$(bzr status 2>&1); then
    status_mod=$(echo -n "$bzr_status" | head -n1 | grep "modified" | wc -m)
    status_all=$(echo -n "$bzr_status" | head -n1 | wc -m)
    revision=${$(bzr log -r-1 --log-format line | cut -d: -f1):gs
    if [[ $status_mod -gt 0 ]] ; then
      prompt_segment yellow black "bzr@$revision ✚"
    else
      if [[ $status_all -gt 0 ]] ; then
        prompt_segment yellow black "bzr@$revision"
      else
        prompt_segment green black "bzr@$revision"
      fi
    fi
  fi
}

prompt_hg() {
  (( $+commands[hg] )) || return
  local rev st branch
  if $(hg id >/dev/null 2>&1); then
    if $(hg prompt >/dev/null 2>&1); then
      if [[ $(hg prompt "{status|unknown}") = "?" ]]; then
        # if files are not added
        prompt_segment red white
        st='±'
      elif [[ -n $(hg prompt "{status|modified}") ]]; then
        # if any modification
        prompt_segment yellow black
        st='±'
      else
        # if working copy is clean
        prompt_segment green $CURRENT_FG
      fi
      echo -n ${$(hg prompt "☿ {rev}@{branch}"):gs
    else
      st=""
      rev=$(hg id -n 2>/dev/null | sed 's/[^-0-9]//g')
      branch=$(hg id -b 2>/dev/null)
      if `hg st | grep -q "^\?"`; then
        prompt_segment red black
        st='±'
      elif `hg st | grep -q "^[MA]"`; then
        prompt_segment yellow black
        st='±'
      else
        prompt_segment green $CURRENT_FG
      fi
      echo -n "☿ ${rev:gs
    fi
  fi
}

# Dir: current working directory
prompt_dir() {
  prompt_segment blue $CURRENT_FG 
}

# Virtualenv: current working virtualenv
prompt_virtualenv() {
  if [[ -n "$VIRTUAL_ENV" && -n "$VIRTUAL_ENV_DISABLE_PROMPT" ]]; then
    prompt_segment blue black "(${VIRTUAL_ENV:t:gs
  fi
}

# Status:
# - was there an error
# - am I root
# - are there background jobs?
prompt_status() {
  local -a symbols

  [[ $RETVAL -ne 0 ]] && symbols+=
  [[ $UID -eq 0 ]] && symbols+=
  [[ $(jobs -l | wc -l) -gt 0 ]] && symbols+=

  [[ -n "$symbols" ]] && prompt_segment black default "$symbols"
}

#AWS Profile:
# - display current AWS_PROFILE name
# - displays yellow on red if profile name contains 'production' or
#   ends in '-prod'
# - displays black on green otherwise
prompt_aws() {
  [[ -z "$AWS_PROFILE" || "$SHOW_AWS_PROMPT" = false ]] && return
  case "$AWS_PROFILE" in
    *-prod|*production*) prompt_segment red yellow  "AWS: ${AWS_PROFILE:gs
    *) prompt_segment green black "AWS: ${AWS_PROFILE:gs
  esac
}

## Main prompt
build_prompt() {
  RETVAL=$?
  prompt_status
  prompt_virtualenv
  prompt_aws
  prompt_context
  prompt_dir
  prompt_git
  prompt_bzr
  prompt_hg
  prompt_end
}

PROMPT=

Windows Terminal 色彩具体渲染

色彩具体渲染可以更改 Windows Terminal 中的配置文件，为 Ubuntu 单独设置配色。

我的配置如下：

"schemes": 
    [
        {
            "background": "#0C0C0C",
            "black": "#002B36",
            "blue": "#268BD2",
            "brightBlack": "#74888e",
            "brightBlue": "#4693d2",
            "brightCyan": "#58ecff",
            "brightGreen": "#98C379",
            "brightPurple": "#6C71C4",
            "brightRed": "#CB4B16",
            "brightWhite": "#FDF6E3",
            "brightYellow": "#E4C07A",
            "cursorColor": "#FFFFFF",
            "cyan": "#2AA198",
            "foreground": "#CCCCCC",
            "green": "#bcd800",
            "name": "Solarized Customed",
            "purple": "#D33682",
            "red": "#DC322F",
            "selectionBackground": "#FFFFFF",
            "white": "#EEE8D5",
            "yellow": "#B58900"
        }
    ]

oh-my-zsh 在进入 git 目录时卡顿的问题

因为在进入目录的时候，oh-my-zsh 会执行 git status 去获取 git 的更新信息，当仓库很大的时候就会非常慢了。

设置 oh-my-zsh 不读取文件变化信息（在 git 项目目录执行下列命令）

git config --add oh-my-zsh.hide-dirty 1

如果还觉得慢，可以再设置 oh-my-zsh 不读取任何 git 信息

git config --add oh-my-zsh.hide-status 1

如果想恢复显示，可以将 1 改为 0，或者

git config --remove-section oh-my-zsh

如果实在太卡，以至于仓库都进不去了，那么可以添加 --global ，在所有仓库都禁用这个功能

git config --global --add oh-my-zsh.hide-dirty 1
git config --global --add oh-my-zsh.hide-status 1

查看

# 当前仓库
git config --local -e
# 全局设置
git config --global -e

最终配置文件

我的配置文件如下：

# If you come from bash you might have to change your $PATH.
# export PATH=$HOME/bin:/usr/local/bin:$PATH

# Path to your oh-my-zsh installation.
export ZSH="$HOME/.oh-my-zsh"

# Set name of the theme to load --- if set to "random", it will
# load a random theme each time oh-my-zsh is loaded, in which case,
# to know which specific one was loaded, run: echo $RANDOM_THEME
# See https://github.com/ohmyzsh/ohmyzsh/wiki/Themes
ZSH_THEME="agnoster"

# Set list of themes to pick from when loading at random
# Setting this variable when ZSH_THEME=random will cause zsh to load
# a theme from this variable instead of looking in $ZSH/themes/
# If set to an empty array, this variable will have no effect.
# ZSH_THEME_RANDOM_CANDIDATES=( "robbyrussell" "agnoster" )

# Uncomment the following line to use case-sensitive completion.
# CASE_SENSITIVE="true"

# Uncomment the following line to use hyphen-insensitive completion.
# Case-sensitive completion must be off. _ and - will be interchangeable.
# HYPHEN_INSENSITIVE="true"

# Uncomment one of the following lines to change the auto-update behavior
# zstyle ':omz:update' mode disabled  # disable automatic updates
# zstyle ':omz:update' mode auto      # update automatically without asking
# zstyle ':omz:update' mode reminder  # just remind me to update when it's time

# Uncomment the following line to change how often to auto-update (in days).
# zstyle ':omz:update' frequency 13

# Uncomment the following line if pasting URLs and other text is messed up.
# DISABLE_MAGIC_FUNCTIONS="true"

# Uncomment the following line to disable colors in ls.
# DISABLE_LS_COLORS="true"

# Uncomment the following line to disable auto-setting terminal title.
# DISABLE_AUTO_TITLE="true"

# Uncomment the following line to enable command auto-correction.
# ENABLE_CORRECTION="true"

# Uncomment the following line to display red dots whilst waiting for completion.
# You can also set it to another string to have that shown instead of the default red dots.
# e.g. COMPLETION_WAITING_DOTS=
# Caution: this setting can cause issues with multiline prompts in zsh < 5.7.1 (see #5765)
# COMPLETION_WAITING_DOTS="true"

# Uncomment the following line if you want to disable marking untracked files
# under VCS as dirty. This makes repository status check for large repositories
# much, much faster.
# DISABLE_UNTRACKED_FILES_DIRTY="true"

# Uncomment the following line if you want to change the command execution time
# stamp shown in the history command output.
# You can set one of the optional three formats:
# "mm/dd/yyyy"|"dd.mm.yyyy"|"yyyy-mm-dd"
# or set a custom format using the strftime function format specifications,
# see 'man strftime' for details.
# HIST_STAMPS="mm/dd/yyyy"

# Would you like to use another custom folder than $ZSH/custom?
# ZSH_CUSTOM=/path/to/new-custom-folder

# Which plugins would you like to load?
# Standard plugins can be found in $ZSH/plugins/
# Custom plugins may be added to $ZSH_CUSTOM/plugins/
# Example format: plugins=(rails git textmate ruby lighthouse)
# Add wisely, as too many plugins slow down shell startup.
plugins=(
        git
        zsh-autosuggestions
        z
        zsh-syntax-highlighting
        extract
)

source $ZSH/oh-my-zsh.sh

# User configuration

# export MANPATH="/usr/local/man:$MANPATH"

# You may need to manually set your language environment
# export LANG=en_US.UTF-8

# Preferred editor for local and remote sessions
# if [[ -n $SSH_CONNECTION ]]; then
#   export EDITOR='vim'
# else
#   export EDITOR='mvim'
# fi

# Compilation flags
# export ARCHFLAGS="-arch x86_64"

# Set personal aliases, overriding those provided by oh-my-zsh libs,
# plugins, and themes. Aliases can be placed here, though oh-my-zsh
# users are encouraged to define aliases within the ZSH_CUSTOM folder.
# For a full list of active aliases, run `alias`.
#
# Example aliases
# alias zshconfig="mate ~/.zshrc"
# alias ohmyzsh="mate ~/.oh-my-zsh"

# >>> conda initialize >>>
# !! Contents within this block are managed by 'conda init' !!
__conda_setup="$('/home/ubuntu/miniconda3/bin/conda' 'shell.zsh' 'hook' 2> /dev/null)"
if [ $? -eq 0 ]; then
    eval "$__conda_setup"
else
    if [ -f "/home/ubuntu/miniconda3/etc/profile.d/conda.sh" ]; then
        . "/home/ubuntu/miniconda3/etc/profile.d/conda.sh"
    else
        export PATH="/home/ubuntu/miniconda3/bin:$PATH"
    fi
fi
unset __conda_setup
# <<< conda initialize <<<
proxy_on() {
    export hostip=$(cat /etc/resolv.conf |grep -oP '(?<=nameserver\ ).*')
    export https_proxy="${hostip}:7890"
    export http_proxy="${hostip}:7890"
    echo -e "终端代理已开启。"
}

proxy_off(){
    unset hostip http_proxy https_proxy
    echo -e "终端代理已关闭。"
}

最终效果如图：