Hints for You have new mail in/var/spool/mail/root on Linux

1. Sometimes we operate under the root user and often prompt you after login: You have new mail in/var/spool/mail/root. This prompt is due to reminders sent to root users by the mail mail service on Linux system, which normally turns off reminders or sets mailbox addresses to other mailbox addresses instead of being sent to root users.The solu ...

Posted on Thu, 07 Nov 2019 10:58:17 -0500 by marginalboy

Nginx virtual host application -- virtual host based on domain name, IP and port

There are three types of virtual hosts supported by Nginx ● domain name based virtual host● IP based virtual host● port based virtual hostEach virtual host can realize its own functions through the "server {}" configuration section Domain name based virtual host Experimental environment 1. Basic source package (no password): https: ...

Posted on Wed, 06 Nov 2019 18:21:31 -0500 by DarkendSoul

Apache Web page and security optimization in Linux system

Apache Web page optimization Apache Web page optimization overview In an enterprise, only the default configuration parameters are used after Apache deployment, which will cause many problems in the website. In other words, the default configuration is for the previous lower server configuration. The previous configuration is no longer applic ...

Posted on Wed, 06 Nov 2019 18:19:21 -0500 by Taro

oracle basically uses [7] single line function and group function

This article describes the functions in linux. In linux, functions are divided into single line functions and group functions. Single line functions are divided into string functions, number functions, date functions and other functions. Group functions are divided into max, min, avg, sum and count. 1 system, environment and preco ...

Posted on Wed, 06 Nov 2019 17:01:32 -0500 by TheDeadPool

Using Docker Compose to realize nginx load balancing

Based on the network management of Docker and the IP setting of container, Nginx load balancing is realized View all docker networks docker network ls /* NETWORK ID NAME DRIVER SCOPE b832b168ca9a bridge bridge local 373be82d3a6a composetest_default bridge ...

Posted on Wed, 06 Nov 2019 14:16:34 -0500 by ma9ic

Linux operation command df

Home page of personal blog (click to view details)-- https://blog.51cto.com/11495268Linux Shell command directory overview (click for details)-- https://blog.51cto.com/11495268/2338219      1, introduction df command is short for disk free     2. Main functions The function of df command in linux is to check the disk space occupation of the ...

Posted on Wed, 06 Nov 2019 14:06:35 -0500 by mcguinkc

The most complete pip use guide, 50% you may not have used it

All Python developers know that Python is so popular, which can stand out among many high-level languages. In addition to its simple syntax and easy to use, it is also due to the complete Python ecosystem. Tens of thousands of Python enthusiasts are willing to package various third-party toolkits that are conducive to development based on pytho ...

Posted on Wed, 06 Nov 2019 08:16:08 -0500 by Jakei

LNMP architecture deployment - follow up

Sketch:LNMP platform is the combined architecture of Linux, Nginx, MySQL and PHP. It requires Linux server, Nginx website server, MySQL database and PHP parsing environmentdetails Linux is a kind of Unix computer operating system, which is the most popular free operating system. Nginx is a high-performance HTTP and reverse proxy server with li ...

Posted on Wed, 06 Nov 2019 06:23:17 -0500 by argrafic

podman pilot test - comparison with docker

1. What is docker? Docker is an open source application container engine, which belongs to the encapsulation of Linux containers. Docker provides a simple and easy-to-use container using interface, so that developers can package their applications and dependency packages into a portable container, and then publish them to any popular Linux ma ...

Posted on Wed, 06 Nov 2019 05:12:56 -0500 by JTapp

Regular expression and document editor sed of Linux O & M Yunsheng notes

Overview of regular expressions It uses a single character to describe and match a series of strings that conform to the rules of a statement. It is composed of ordinary characters and special characters. Regular expressions are widely used in script programming and text editor.Regular expressions are abbreviated to regex, regexp, RE.In most l ...

Posted on Wed, 06 Nov 2019 04:11:13 -0500 by Jr0x