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Zombie process When the child process finishes running, the parent process continues to run, but the parent process does not recycle the child process, freeing the resources occupied by the child process, then the child process becomes a zombie process. In Unix process management, if the new child process is finished, the parent process will re ...

In the early morning, I received alert text messages from Ali cloud server.Emergency security incident: access malicious download source, access malicious download IP.Instant wake up, immediately get up to handle. First log in to Aliyun backstage, check the security center's warning mascot, found several records: Parent process path: /usr/bin ...

Based on Python's file, directory and path operations, we usually use os.path modular. pathlib is its replacement in os.path On the basis of the encapsulation, the path is objectified, the api is more popular, the operation is more convenient, more in line with the thinking habits of programming. The pathlib module provides classes that use sem ...

Background: When a RHEL7 machine is newly built, there is no graphic interface???? reason: The system was created without graphing installed The default run level of the system is not graphical After the system is installed, there are operations to reduce the memory. If the memory is too low, the desktop cannot be ...

1, Date and time functions 1. Function to get the current dateIt's the same. It's different CURDATE(): used to get the current date of the systemCurrent "date() is used by the system to get the current date mysql> select CURDATE(),CURRENT_DATE(); 2. Get function of current time CURTIME(): used to get the current time of the system ...

1 Description The system CTL tool is required to set the startup and self start. systemctl is a systemd tool, which is mainly responsible for controlling systemd system and service manager. SYSTEMd is a collection of system management daemons, tools, and libraries to replace the System V initial process. The function ...

Moment.js display Chinese 1, Reference article: moment.js add Chinese language (Chinese) 2, Start 0. Premise background Recently, I was working on a project of wechat applet, in which time stamps are needed. Then I thought of using Moment.js to process the class library, wrote a piece of code, tested it, and the prin ...

There are two libraries available for krb5 API: MIT and Heimdal. The APIs of the two libraries are different. It is basically OK for one client's API to connect to the otherThe two kadmin libraries in API are completely incompatible. From the kadmin application tools of MIT and Heimdal, it can be seen that it is not successful to connect the k ...

go process control String explanation String principle The bottom layer of string is a byte array, so it can be converted to and from [] byte type Characters in a string cannot be modified String is composed of byte, so the length of string is the length of byte The run type (int32 in four bytes) is used to represent utf8 characters. A run co ...

This article introduces you to the use of Select in the Go Language and believes that you are not unfamiliar with switching. However, select and switching have a common feature that they both handle things in a case way, but select and switching handle things completely different and incompatible.Let's see what switching is like: various types ...