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Disks in a Linux server can be divided into local disks and LUNs (logical unit number), the local disk is the local disk of the physical server or the local virtual disk of the virtual machine, and the LUN is the logical unit number, which is a logical object, so it is often called Logical Device. It is a logical disk shared by remote centraliz ...

catalogue 1, Working principle 2, Command format 3, Common built-in variables 4, Output text by line 5, Output text by field 6, Calling shell commands through pipes, double quotes 1, Working principle Read the text line by line. By default, the text is separated by a space or tab key. Save the separated fields to the built-in variable, ...

Linux interview questions and answers (version 2022) are suitable for fresh students and experienced programmers. Each is a carefully screened high-frequency interview question to help you find a satisfactory job! Linux Download link: All interview questions and answers PDF 1. How many physical CPUs and the number of cores of each CPU in the ...

1, CUPS introduction CUPS is a modular open source printing system, which uses Internet Printing Protocol (IPP) as the basis to manage printers, print requests and print queues. CUPS supports network printer browsing and printing options based on PostScript printer descriptions. CUPS also provides a common print interface across the local netw ...

preface One of the best things about Linux is its multi person and multi task environment. If you are exposed to Linux for the first time, what is the meaning of so many directories and files under Linux? Let me make a summary. 1, Manage user accounts Compared with windows operating system, the functions of user account and group account ...

Linxu's instructions Usage scenario When you are not familiar with an instruction Get help Basic grammar man [command or configuration file] NAME ls - list directory contents SYNOPSIS ls [OPTION]... [FILE]... DESCRIPTION List information about the FILEs (the current directory by default). Sort entri ...

1, Custom scheduled tasks 1. atd service (one time) 1. Command corresponding to atd service Installation is required before using the at command [root@localhost lianxi]# yum install at -y Then the atd service must be started, otherwise it will not perform tasks regularly [root@localhost lianxi]# service atd start Redirecting to /bin/syst ...

1, Software installation 1.1 MySQL installation Download the installation package mysql-8.0 23-1. el7. x86_ 64.rpm-bundle. tar. gz. After decompression, the installation process shall be carried out in the following order: (1) mysql-community-common[dongxw@localhost mysql]$ sudo rpm -ivh mysql-community-common-8.0.23-1.el7.x86_64.rpm (2) My ...

systemd introduction systemd is the main system daemon management tool on Linux system at present. On the one hand, init manages the process serially, which is prone to blocking. On the other hand, init only executes the startup script and cannot manage the service itself. Therefore, starting from CentOS 7, init has been replaced by systemd as ...

1. Installing anaconda3 1.1 download anaconda3 Directly in Official website Slow down, recommended Tsinghua mirror (you can also change the source of Pip to domestic, and pip install will be much faster) In the latest date, select an Anaconda3 installation package corresponding to your system version, x86_64 means compatible with 32-bi ...