hadoop/sbin/start-all.shspark/sbin/start-master.shspark/sbin/start-slaves.shspark/sbin/stop-master.shspark/sbin/stop-slaves.shhadoop/sbin/stop-all.sh

django可以在运行服务器时指定端口号python manage.py runserver 8080

create database sina default character set utf8mb4 collate utf8mb4_unicode_ci;

cat /usr/local/cuda/version.txt

create table tweets(weiboid varchar(20) not null ,primary key(weiboid),fromweibo varchar(20),dateandtime datatime,username varchar(100),userid varchar(20).weibocontent varchar(350) character set

alter table tweets change WeiboContent WeiboContent varchar(350) character set utf8mb4 collate utf8mb4_unicode_ci;//或者alter table tweets modify column WeiboContent varchar(350) character set utf8mb4

insert into tweets values('2017-03-02 15:22:22');insert into tweets values('2017-03-02 16:34');//末尾秒，分，时，可以依次省略，但日，月，年不可以省略

关掉VM虚拟机设置中的use full resolution for Retina display

#！/home/gxd/venv/py3env/bin python# -*- coding:utf-8 -*-# Author:ShellDawndef main():print("YES")passif __name__ == '__main__':main()pass

brew install python#自动安装最新版的python2brew install python3#自动安装最新版的python3#然后手动设置python优先级在terminal中，使用python命令是系统原python，使用python2命令是新装python2，使用python3命令是新装python3.所以,pip2是新装python2的管理器，p...