Linux

Rsync is synchronized by serviceThrough the service of the way first we have to open a service, its architecture is the CS architecture. Client and service side. The server opens a service, rsync service, and listens on a port, defaults to 873, and

Passwords are vulnerable to brute force attacks, especially on Internet-facing VMS, such as WEB servers. When you connect to a Linux virtual machine (VM) in Azure, you should use public key cryptography to provide a more secure way to log on to your

Linuxsystem, how do I see a lot of hidden files and folders, in addition to storing a lot of visible files and folders? What's the use of these hidden files? View Linux home directory hidden files can be implemented by running Ls–a, for hidden files,

First, IntroductionWhen a process in a Linux system runs, it always accesses the resources of the system, accesses the files, or sends a signal to other processes. Does the system allow it to do these things? What is the system's ability to

First, prefaceFrom an application perspective, there are three types of time-related services that the kernel needs to provide:1, and system time-related services. For example, when you write a record to a database, you need to record the operation

Virtual memoryVirtual memory is a perfect interaction between hardware exceptions, hardware address translation, main memory, disk files, and kernel software, which provides a large, consistent, and private address space for each process. With a

High-end memory refers to memory with a physical address greater than 896M. For such memory, it is not possible to map in "Kernel Direct mapping Space".Why?Because "kernel direct mapping Space" can only be from 3G to 4G, only directly mapped 1G

When using Linux, file lookups are often required. The commands you find are primarily find and grep. Two commands are of a district.　　The Difference : (1) The Find command is based on the attributes of the file , such as file name, file size, owner,

First, the source byOur program logic often encounters such sequences of operations:1. Read the value of a variable in memory into the register2. Modify the value of the variable (that is, modify the value in the register)3. Write the values in the

Mail Queue Related:postsuper: The Postsuper command is a postfix queue maintenance job. The use of this command is limited to superuser users.By default, Postsuper performs the operations requested by using the-s and-P command-line options in all

Download puttyAddress: https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.htmlSelect Putty.zip 32-bit downloadAfter installation, add the IP that you want to remoteSaved sessions here fill in your virtual machine name (optional)Set some

Jenkins remote publishing script method, jenkins publishing script Jenkins remote scripting method. In the local jenkins release script, run the cp command to move the compiled jar file to another release directory on the same server and then

Linux header file C/C ++ header file and linux header file Linux header file C/C ++ header file. Common linux header files are as follows: POSIX standard-defined header files ??????? Directory item ???????? File Control ??? File name matching type

Eight rm command examples that you may not know all about Deleting a file is similar to copying/moving a file. In Linux, there is a dedicated CommandrmTo complete all deletion-related operations. In this article, we will use some easy-to-understand

In linux, php7 and php5 are run simultaneously, and php7, php5, and php7php5 are installed simultaneously. Although php7 performs much better than php5,It has been out for more than two years,However, many old systems are developed using

Common Liunx commands and common liunx commands 1. Tomcat-related commands Restart tomcat in linux and view tomcat running logs in real time In Linux, restart Tomcat and run the command! First, go to the bin directory under

How to easily find great projects and resources on GitHub On the GitHub website, hundreds of projects are added every day. Since GitHub has thousands of projects, it is almost exhausting to search for projects. Fortunately, a group of people have

[Pick Up] a charming SHELL shell/Linux | SHELL script getting started, shelllinuxAdhere to knowledge sharing, this article prepared by Alopex, reprinted please indicate Source Address: http://www.cnblogs.com/alopex/ index: What is shell? Shell

GitLab access OpenLDAP and AD Domains Today, we debugged GitLab to access AD domain control and found a lot of information to solve the problem. Here we will record it. GitLab has its own user mechanism, but it is also compatible with ldap's user

Use Rsyslog to collect logs to Kafka The project needs to collect logs for storage and analysis. The data flow is rsyslog (Collection)-> kafka (Message Queue)-> logstash (cleanup)-> es, hdfs; today, we will first collect logs to kafka using