liziwl

Copy line by line and paste to an interactive shell

Create a new user named hadoop

sudo useradd -m hadoop -s /bin/bash     # 创建hadoop用户
sudo passwd hadoop          # 修改密码
sudo adduser hadoop sudo    # 增加管理员权限

Log out current user, log in hadoop

liziwl

参考链接: https://bbs.archlinux.org/viewtopic.php?id=208874

目录不存在

If the firmware file directory doesn't exist, create it:

sudo mkdir -p /lib/firmware/ath10k/QCA6174/hw3.0/

目录存在，备份，删除原文件

If the directory already exists, backup everything important from it:

liziwl

# 首先更换为国内更新源，再到搜狗输入法官网下载搜狗输入法，下载deb文件。
https://pinyin.sogou.com/linux/?r=pinyin

# 安装deb文件
sudo dpkg -i <file your downloaded>
# 安装依赖
sudo apt-get install -f

# 将输入法系统改为fcitx

liziwl

sudo cp /etc/apt/sources.list /etc/apt/sources.list_bak

sudo gedit /etc/apt/sources.list

以下覆盖文件内容
#aliyun
deb http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse

liziwl

                        _ooOoo_
                       o8888888o
                       88" . "88
                       (| -_- |)
                        O\ = /O
                    ____/`---'\____
                  .   ' \\| |// `.
                   / \\||| : |||// \
                 / _||||| -:- |||||- \
                   | | \\\ - /// | |

liziwl

【git 删除本地分支】
git branch -D br

【git 删除远程分支】
git push origin :br  (origin 后面有空格)
git代码库回滚: 指的是将代码库某分支退回到以前的某个commit id

【本地代码库回滚】：
git reset --hard commit-id :回滚到commit-id，讲commit-id之后提交的commit都去除
git reset --hard HEAD~3：将最近3次的提交回滚

liziwl

Python Socket 编程详细介绍

Python 提供了两个基本的 socket 模块：

• Socket 它提供了标准的BSD Socket API。
• SocketServer 它提供了服务器重心，可以简化网络服务器的开发。

下面讲解下 Socket模块功能。

Socket 类型

liziwl

#!/bin/sh

# Converts a mysqldump file into a Sqlite 3 compatible file. It also extracts the MySQL `KEY xxxxx` from the
# CREATE block and create them in separate commands _after_ all the INSERTs.

# Awk is choosen because it's fast and portable. You can use gawk, original awk or even the lightning fast mawk.
# The mysqldump file is traversed only once.

# Usage: $ ./mysql2sqlite mysqldump-opts db-name | sqlite3 database.sqlite
# Example: $ ./mysql2sqlite --no-data -u root -pMySecretPassWord myDbase | sqlite3 database.sqlite

liziwl

git config --global http.proxy http://127.0.0.1:1080
git config --global https.proxy http://127.0.0.1:1080

git config --global --unset http.proxy
git config --global --unset https.proxy