https://www.tecmint.com/usermod-command-examples/ -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- In Unix/Linux distribut…

You should get a grip on the Linux grep command. This is part of the on-going 15 Examples series, where 15 detailed examples will be provided for a specific command or functionality.  Earlier we discussed 15 practical examples for Linux find command,…

大好的周末,决定写一篇读书笔记.:) 最近读了一些股票估值以及价值投资相关的文章和书籍.今天将其中的一本做一些笔记以及简单的总结. 该书名为<Complete Guide to Value Investing>,是 Doctor Wealth 公司出品的. 书籍目录结构 下面,我将重点章节进行简单总结. 概念及历史 本书前5章讲了价值投资的概念以及相关历史. 历史 下图,说明了价值投资主要理论的发展,以及相关几个大牛: 全是投资界大名鼎鼎的人物! 巴菲特的建议 其中,也说明了 Warren B…

Regular expressions are used to search and manipulate the text, based on the patterns. Most of the Linux commands and programming languages use regular expression. Grep command is used to search for a specific string in a file. Please refer our earli…

You are here to learn about Spring Boot Actuator for collecting metrics about your production grade applications. Spring Boot Actuator is sub-project of Spring Boot and it is one of the nice feature that adds great value to the Spring Boot applicatio…

#! /usr/bin/expect -f# this script is used to practise the command "expect" #when "lindex" have been used here, the array index begins with 0 but not with 1set user [lindex $argv 0]set host [lindex $argv 1]set passwd [lindex $argv 2] s…

There are several common access patterns when using a cache. Ehcache supports the following patterns: Cache-aside (or direct manipulation) Cache-as-sor (a combination of read-through and write-through or write-behind patterns) Read-through Write-thro…

If you’ve ever struggled building responsive websites, this post is for you. It’s part of a series on responsive design, in particular responsive images, pulled from my book, Responsive Web Design. If you find this excerpt useful, and want even more…

背景 Flexbox 布局 (FLexible Box)模块(现在处于W3C的最终征求意见稿(Last Call Working Draft)阶段)意在提供一个更为有效的方式来进行布局.对齐和分配一个容器内元素之间的空间,即使他们的大小是未知的或者动态的(这也是flex(弹性的)这个单词的由来). flex布局的主要思想是,让容器能够改变它的子元素的宽度/高度(甚至顺序),从而更好地填充可用的空间(主要是为了适应所有种类的设备和屏幕大小).一个 flex 容器可以扩展它的子元素从而填充可用的空间…

1. install > npm install -g angular-cli 2. create app > ng new first-app 3. build app > cd first-app > ng serve…