Shell Programming Specification Variable Details (shell programming specifications in Linux, how scripts are executed, pipe symbols and redirections, shell variable types)

Preface Shell is a program written in C that serves as a bridge for users to use Linux. Shell is both a command language and a programming language. _The execution of Linux commands must depend on the shell command interpreter. Shell is actually a special program that runs in the Linux operating system. It is located between the kernel of ...

Posted by simonmlewis on Sun, 15 May 2022 20:50:07 +0300

ELK log analysis system construction

ELK log analysis system 1. Introduction to ELK Log Analysis System (1) Log server Improve security Centralized storage of logs Disadvantage: Difficulty in analyzing logs (2) Composition of ELK log analysis system Elasticsearch Logstach Kibana Log processing steps Centralized management of logs Format logs (Logstash) and output t ...

Posted by rosegarden on Sun, 15 May 2022 20:40:45 +0300

Detailed introduction of crontab service for scheduled tasks under linux

1, Introduction to crontab 1. crontab is used to allow users to execute programs at fixed times or intervals If you need to implement the task scheduling function on linux platform, you can write cron script to implement it. Perform tasks at a certain frequency linux will start the crond process by default. The crond process does not need to b ...

Posted by lrsdsout on Sun, 15 May 2022 18:18:13 +0300

Cool interface and powerful function! This Linux performance real-time monitoring tool is super easy to use! Old Smith, do it!

For the maintenance and management of Linux system, its performance monitoring is very important, especially the real-time monitoring data. This data is helpful for us to judge the load pressure of the server, adjust the resource allocation in time, and better serve the business. So today, the migrant worker brother gives you a Linux performanc ...

Posted by pido on Sun, 15 May 2022 13:19:02 +0300

Complete installation of Hadoop (and network disk data)

##Hadoop installation (please leave a message for advice on the inadequacies of the first learning experience) Environment tools (VMware, MobaXterm, CentOS7, JDK8, Hadoop 2.9.2) The required tool environment can be extracted in this link Link: https://pan.baidu.com/s/1VCXtS6fm6YvHMtBFrgNx6Q Extraction code: xpgu 1, VMware installation The i ...

Posted by CrusaderSean on Sun, 15 May 2022 07:54:17 +0300

[IT goose C/C + + Series Courses] pretty boy, I want to learn programming. Why tell me about the operating system?

Day01: Let's regain our love for our dream lover C and C + + [IT C/C + + Series Courses] Operating System Fundamentals Course A "shuangwen" programming tutorial of "against the sky" BILIBILI IT goose BILIBILI@IT goose Course introduction: [C/C + + Series Courses] Operating System Fundamentals Course This cours ...

Posted by PHPcoder25 on Sun, 15 May 2022 00:51:08 +0300

time processing in LInux (C language)

In Linux system applications, it is often necessary to obtain the current time information. The Linux kernel provides some corresponding functions for operation. The standard calling format is described as follows: #include <time.h> char *asctime(const struct tm *tm); char *asctime_r(const struct tm *tm, char *buf); char *ctime(const ...

Posted by w4designs on Sat, 14 May 2022 14:16:42 +0300

Docker advanced application - Remote TLS Management (security authentication)

preface TLS(Transport Layer Security (secure transport layer), TLS is a protocol built on the TCP protocol of the transport layer and serves the application layer. Its predecessor is SSL (Secure Socket) Layer, which realizes the function of encrypting the message of the application layer and then sending it to TCP for transmission. ...

Posted by aggrav8d on Sat, 14 May 2022 13:51:49 +0300

harbor private warehouse summary

1, Introduction to Harbor Harbor is an open source enterprise dockerregistry (warehouse) project of VMware. The project address is https://github.com/vmware/harbor. Harbor's goal is to help users quickly build an enterprise level DockerRegistry service. Based on docker's open source registry, Harbor provides functions required by enterprise u ...

Posted by sith717 on Sat, 14 May 2022 10:39:11 +0300

File related system calls in Linux Environment

System call: System calls are some functions provided by the operating system for programmers to call. These calls have been encapsulated in the form of C functions, but they are not part of standard C. General applications run in user mode (using 0 to 3G memory), and system calls work in kernel mode (using 3 to 4G memory). The commonly used ...

Posted by ghostdog74 on Sat, 14 May 2022 06:43:50 +0300