huntout.github.io

brew, brew cask, mas

2018-03-30T00:00:00+08:00

在 macOS 上用命令行管理安装软件包以及 apps。

Homebrew: The missing package manager for macOS.

Homebrew-Cask extends Homebrew and brings its elegance, simplicity, and speed to macOS applications and large binaries alike.

mas-cli: A simple command line interface for the Mac App Store. Designed for scripting and automation.

Install

# brew
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
# cask & cask-upgrade
brew tap caskroom/cask
brew tap buo/cask-upgrade
# mas
brew install mas

Usage

# brew
brew list
brew search [--desc] (_text_|/_text_/)
brew install _formula_
brew outdated
brew upgrade
# cask
brew cask list
brew cask search _text_
brew cask install _formula_
brew cu
# mas
mas list
mas search _text_
mas install _appid_
mas outdated
mas upgrade

Ruby Version Manager (RVM)

2018-03-21T00:00:00+08:00

RVM is a command-line tool which allows you to easily install, manage, and work with multiple ruby environments from interpreters to sets of gems.

Install

brew install gpg2
gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB\
## the backslash '\' bypasses a possible alias curl
\curl -sSL https://get.rvm.io | bash -s stable

Setting

# ~/.zshrc
export PATH="$PATH:$HOME/.rvm/bin"
source $HOME/.rvm/scripts/rvm

Usage

brew install gcc@4.9
echo "ruby_url=https://cache.ruby-china.org/pub/ruby" > ~/.rvm/user/db
rvm list known
rvm install 1.9.3 --with-gcc=clang
rvm use 1.9.3

iTerm2 and oh-my-zsh

2018-03-21T00:00:00+08:00

iTerm2 is terminal emulator for macOS that amazing things.

Oh My Zsh is an open source, community-driven framework for managing your zsh configuration.

Download and install

Patch custom font for the special characters

git clone https://github.com/powerline/fontpatcher.git
cd fontpatcher
./setup.py build
sudo ./setup.py install
brew install fontforge
fontforge scripts/powerline-fontpatcher /System/Library/Fonts/Monaco.dfont
cp "Monaco for Powerline.otf" "$HOME/Library/Fonts/"

iTerm2 Preferences

Profiles -> Colors -> Color Presets -> Solarized Dark
         -> Text -> Text Rendering -> Uncheck "Draw bold text in bright colors"
         -> Text -> Font -> 14pt Monaco for Powerline

iTerm2 HotKeys

⌃ + u：清空当前行
⌃ + a：移动到行首
⌃ + e：移动到行尾
⌃ + f：向前移动
⌃ + b：向后移动
⌃ + p：上一条命令
⌃ + n：下一条命令
⌃ + r：搜索历史命令
⌃ + y：召回最近用命令删除的文字
⌃ + h：删除光标之前的字符
⌃ + d：删除光标所指的字符
⌃ + w：删除光标之前的单词
⌃ + k：删除从光标到行尾的内容
⌃ + t：交换光标和之前的字符

oh-my-zsh theme

agnoster

## ~/.zshrc
ZSH_THEME="agnoster"
DEFAULT_USER="huntout"

oh-my-zsh plugins

brew install autojump
brew install zsh-syntax-highlighting

CentOS 6.9 移除 home lv 并扩展 root lv

2018-01-16T00:00:00+08:00

问题

CentOS 6.9 minimal 按默认安装好后：

# df -h

    Filesystem                    Size  Used Avail Use% Mounted on
    /dev/mapper/VolGroup-lv_root   50G  687M   46G   2% /
    tmpfs                          32G     0   32G   0% /dev/shm
    /dev/md126p2                  477M   27M  425M   6% /boot
    /dev/md126p1                  200M  264K  200M   1% /boot/efi
    /dev/mapper/VolGroup-lv_home  790G   69M  750G   1% /home

空余空间都在 home lv 上，如何把空间扩展到 root lv 上？

移除 home lv

# umount /home
# lvchange -an /dev/VolGroup/lv_home
# lvremove /dev/VolGroup/lv_home
# vi /etc/fstab

    /dev/mapper/VolGroup-lv_home /home               ext4    defaults        1 2
    # dd 这一行

扩展 root lv

# lvextend -l +100%FREE /dev/VolGroup/lv_root
    Size of logical volume VolGroup/lv_root changed from 50.00 GiB (12800 extents)
    to 852.69 GiB (218289 extents).
    Logical volume lv_root successfully resized.

# lvdisplay

# resize2fs -p /dev/VolGroup/lv_root
    resize2fs 1.41.12 (17-May-2010)
    Filesystem at /dev/VolGroup/lv_root is mounted on /; on-line resizing required
    old desc_blocks = 4, new_desc_blocks = 54
    Performing an on-line resize of /dev/VolGroup/lv_root to 223527936 (4k) blocks.
    The filesystem on /dev/VolGroup/lv_root is now 223527936 blocks long.

# df -h
    Filesystem                      Size  Used Avail Use% Mounted on
    /dev/mapper/VolGroup-lv_root    840G  707M  796G   1% /
    tmpfs                            32G     0   32G   0% /dev/shm
    /dev/md126p2                    477M   27M  425M   6% /boot
    /dev/md126p1                    200M  264K  200M   1% /boot/efi

# reboot

根据磁盘大小命令 resize2fs 可能会需要很长时间，800G大概需要20分钟，请有耐心一些。

如果有别的办法可以快一些，敬请留言，谢谢！

CentOS 6.9 配置静态IP与超级用户

2018-01-09T00:00:00+08:00

目标

在这个教程我们将学习 CentOS 6.9 minimal 安装好后：

如何配置静态IP
如何新建超级用户
如何禁止root用户远程登录

配置固定IP

# vi /etc/sysconfig/network-scripts/ifcfg-eth0
# i

DEVICE=eth0
HWADDR=00:8C:FA:15:26:34
TYPE=Ethernet
UUID=50c10654-f869-4916-8973-475001ade995
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
IPADDR=10.200.61.9
NETMASK=255.255.192.0
GATEWAY=10.200.1.2
DNS1=114.114.114.114
DNS2=8.8.8.8

# Esc
# :wq

# service network restart

新建超级用户

# adduser newsu
# passwd newsu
# visudo

## Allow root to run any commands anywhere
root    ALL=(ALL)       ALL
newsu   ALL=(ALL)       ALL

禁止root用户远程登录

# vi /etc/ssh/sshd_config

PermitRootLogin no

# service sshd restart

Enjoy it!

在 Windows 上安装 OpenCV-Python 开发环境

2017-11-07T00:00:00+08:00

目标

在这个教程我们将学习

如何在 Windows 上安装 OpenCV-Python
如何在 Visual Code 上安装配置 Python 插件

安装 Python2 以及 pip

如果你已经安装了 Python 2.7.9+，请跳过这一节
如果你安装的是 Python 2 ≤ 2.7.8，请按以下说明安装 pip

2.1. 参考 pip 官方说明

2.2. 下载 get-pip.py

2.3. 运行
```
python get-pip.py
```
2.4. 升级 pip
```
python -m pip install -U pip
```
如果你没有安装 Python，请直接安装 Python 2.7.14

安装 OpenCV

安装 numpy
```
python -m pip install numpy
```
打开 Python IDLE 输入
```
>>> import numpy
```
验证是否安装成功
从 Sourceforge 下载最新的 OpenCV release 并且运行解压缩
打开解压缩后的目录 opencv/build/python/2.7
拷贝 cv2.pyd 到 C:/Python27/lib/site-packeges
打开 Python IDLE 输入
```
>>> import cv2
>>> print cv2.__version__
```
验证是否安装成功

安装配置 VS Code Python 插件

安装 Python 插件
根据需要安装 Python 的 pylint 模块
```
python -m pip install pylint
```

Enjoy it!

迁移多说到disqus

2017-04-01T00:00:00+08:00

多说6月1日就要关闭了，迁移评论系统为 disqus。

迁移很简单，按照 disqus 的说明将 _includes/comments.html 里的代码替换就OK了。

注意一下几个变量的设置：

var disqus_config = function() {
    this.page.url = '{{ page.url | prepend: site.baseurl }}';
    this.page.identifier = '{{ page.id }}';
};

遗憾的是必须科学上网才能正常使用。先这样吧！

adb connect android device via WiFi without root

2016-05-06T00:00:00+08:00

How to connect your android device via WiFi without root?

Steps to get it working:

Enable USB Debugging on your android device.
Connect your android device via usb cable to your PC.
Run adb tcpip 5555.
Run adb connect your-android-device-ip.
Now you can pull out your usb cable.

To revert back to using adb via usb:

Connect your android device via usb cable to your PC.
Run adb usb

Notes:

The device may also revert back to USB mode after reboot.
USB debugging must be enabled on your device.

Enjoy it!

怎样让 Windows XP 识别 WD My Passport 移动硬盘？

2016-05-04T00:00:00+08:00

有位朋友还在使用 XP 系统，无法识别新买的 WD My Passport 移动硬盘。

下面是操作方法：

将移动硬盘插入 USB 口，最好是 PC 机箱后面的 USB 口，前面的 USB 口可能电压不够
首先安装缺失的驱动 WD SES Driver (32-bit)

清除移动硬盘的 GPT 保护分区

打开 DOS 命令行，运行命令 diskpart

DISKPART> list disk

磁盘 ###  状态          大小     可用     Dyn  Gpt
--------  ------------- -------  -------  ---  --- 
磁盘 0    联机           465 GB      0 B
磁盘 1    联机           931 GB      0 B        是

DISKPART> select disk 1

磁盘 1 现在是所选磁盘。

DISKPART> clean all

清除硬盘所有分区。

DISKPART> create partition primary

创建新的 MBR 主分区。

此时，启动“磁盘管理”可初始化磁盘。

Enjoy it!

My Sublime Text 3 Plugins List

2016-01-25T00:00:00+08:00

My Sublime Text 3 Plugins List:

AutoFileName
DocBlockr
EditorConfig
FileDiffs
HTML-CSS-JS Prettify
SublimeLinter

AutoFileName

Sublime Text plugin that autocompletes filenames

Whether your making a img tag in html, setting a background image in css, or linking a .js file to your html (or whatever else people use filename paths for these days…), you can now autocomplete the filename.

DocBlockr

Simplifies writing DocBlock comments in Javascript, PHP, CoffeeScript, Actionscript, C & C++

EditorConfig

EditorConfig helps developers maintain consistent coding styles between different editors

# .editorconfig

root = true

[*]
charset = utf-8
end_of_line = lf
indent_size = 2
indent_style = space
insert_final_newline = true
trim_trailing_whitespace = true

FileDiffs

Shows diffs between the current file, or selection(s) in the current file, and clipboard, another file, or unsaved changes. Can be configured to show diffs in an external diff tool

HTML-CSS-JS Prettify

HTML, CSS, JavaScript and JSON code formatter for Sublime Text 2 and 3 via js-beautify made by Einar Lielmanis.

  // .jsbeautifyrc

  {
    // Details: https://github.com/victorporof/Sublime-HTMLPrettify#using-your-own-jsbeautifyrc-options
    // Documentation: https://github.com/einars/js-beautify/
    "html": {
      "allowed_file_extensions": ["htm", "html", "xhtml", "shtml", "xml", "svg", "vue"],
      "brace_style": "collapse", // [collapse|expand|end-expand|none] Put braces on the same line as control statements (default), or put braces on own line (Allman / ANSI style), or just put end braces on own line, or attempt to keep them where they are
      "end_with_newline": false, // End output with newline
      "indent_char": " ", // Indentation character
      "indent_handlebars": false, // e.g. , 
      "indent_inner_html": false, // Indent <head> and <body> sections
      "indent_scripts": "keep", // [keep|separate|normal]
      "indent_size": 2, // Indentation size
      "max_preserve_newlines": 2, // Maximum number of line breaks to be preserved in one chunk (0 disables)
      "preserve_newlines": true, // Whether existing line breaks before elements should be preserved (only works before elements, not inside tags or for text)
      "unformatted": ["a", "span", "img", "code", "pre", "sub", "sup", "em", "strong", "b", "i", "u", "strike", "big", "small", "pre", "h1", "h2", "h3", "h4", "h5", "h6"], // List of tags that should not be reformatted
      "wrap_line_length": 80 // Lines should wrap at next opportunity after this number of characters (0 disables)
    },
    "css": {
      "allowed_file_extensions": ["css", "scss", "sass", "less"],
      "end_with_newline": false, // End output with newline
      "indent_char": " ", // Indentation character
      "indent_size": 2, // Indentation size
      "newline_between_rules": true, // Add a new line after every css rule
      "selector_separator": " ",
      "selector_separator_newline": true // Separate selectors with newline or not (e.g. 'a,\nbr' or 'a, br')
    },
    "js": {
      "allowed_file_extensions": ["js", "json", "jshintrc", "jsbeautifyrc", "babelrc", "eslintrc", "es6"],
      "brace_style": "collapse", // [collapse|expand|end-expand|none] Put braces on the same line as control statements (default), or put braces on own line (Allman / ANSI style), or just put end braces on own line, or attempt to keep them where they are
      "break_chained_methods": false, // Break chained method calls across subsequent lines
      "e4x": false, // Pass E4X xml literals through untouched
      "end_with_newline": false, // End output with newline
      "indent_char": " ", // Indentation character
      "indent_level": 0, // Initial indentation level
      "indent_size": 2, // Indentation size
      "indent_with_tabs": false, // Indent with tabs, overrides `indent_size` and `indent_char`
      "jslint_happy": false, // If true, then jslint-stricter mode is enforced
      "keep_array_indentation": false, // Preserve array indentation
      "keep_function_indentation": false, // Preserve function indentation
      "max_preserve_newlines": 3, // Maximum number of line breaks to be preserved in one chunk (0 disables)
      "preserve_newlines": true, // Whether existing line breaks should be preserved
      "space_after_anon_function": false, // Should the space before an anonymous function's parens be added, `function()` vs `function ()`
      "space_before_conditional": true, // Should the space before conditional statement be added, `if(true)` vs `if (true)`
      "space_in_empty_paren": false, // Add padding spaces within empty paren, `f()` vs `f( )`
      "space_in_paren": false, // Add padding spaces within paren, ie. f( a, b )
      "unescape_strings": false, // Should printable characters in strings encoded in \xNN notation be unescaped, 'example' vs '\x65\x78\x61\x6d\x70\x6c\x65'
      "wrap_line_length": 0 // Lines should wrap at next opportunity after this number of characters (0 disables)
    }
  }

SublimeLinter

A framework for interactive code linting in the Sublime Text 3 editor.

SublimeLinter-contrib-eslint

This linter plugin for SublimeLinter provides an interface to ESLint. It will be used with files that have the “javascript” syntax, or within <script> tags in HTML files.
SublimeLinter-jshint

This linter plugin for SublimeLinter provides an interface to jshint. It will be used with files that have the “JavaScript” syntax, or within <script> tags in HTML files.

Extra Installations

  npm i -g jshint
  npm i eslint eslint-config-airbnb eslint-plugin-html

SublimeLinter User Settings

  // SublimeLinter.sublime-setting

  {
    "user": {
      "lint_mode": "save only",
      "linters": {
        "eslint": {
          "@disable": false,
          "args": [],
          "excludes": [
            "*.js"
          ]
        },
        "jshint": {
          "@disable": false,
          "args": [],
          "excludes": [
            "*.es6",
            "*.vue"
          ]
        }
      },
      "mark_style": "outline",
      "no_column_highlights_line": true,
      "passive_warnings": false,
      "rc_search_limit": 3,
      "shell_timeout": 10,
      "show_errors_on_save": true,
      "show_marks_in_minimap": true,
      "syntax_map": {
        "html (django)": "html",
        "html (rails)": "html",
        "html 5": "html",
        "javascript (babel)": "javascript",
        "magicpython": "python",
        "php": "html",
        "python django": "python",
        "pythonimproved": "python",
        "vue": "javascript"
      },
      "wrap_find": true
    }
  }

Project Settings

  // .eslintrc

  {
    "extends": "airbnb/base",
    "plugins": ["html"],
    "rules": {
      "new-cap": [2, {
        "newIsCap": true,
        "capIsNewExceptions": ["$.Deferred"]
      }],
      "space-before-function-paren": [2, {
        "anonymous": "never",
        "named": "never"
      }],
      "semi": [2, "never"],
    }
  }

  // .jshintrc

  {
    /*
     * ENVIRONMENTS
     * =================
     */
    "browser": true,
    "esnext": true,
    "jasmine": true,
    "node": true,

    /*
     * ENFORCING OPTIONS
     * =================
     */
    "eqeqeq": true,
    "globalstrict": true,
    "indent": 2,
    "newcap": true,
    "quotmark": true,
    "undef": true,
    "unused": true,

    "globals": {
      "require": false,
      "module": false
    },

    /*
     * RELAXING OPTIONS
     * =================
     */
    "eqnull": true
  }

Enjoy it!