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Linux journey one 3: disk quota and advanced file management Source: pixels Application and practice of disk quota What is disk quota General purpose of disk quotas Limit the maximum disk quota that a user group can useLimit the maximum disk quota for a userLimit the maximum disk quota for a directory Disk quota is a tool that provides ...

Installation steps: 1. Update the software warehouse and use domestic sources: configure and use Ali's open source image in CentOS 1) Back up the original file / etc / yum.com repos. d 2) Download the repo file of the corresponding version of the system from the Alibaba open source image site: #CentOS8 [root@VM-0-8-centos yum.repos.d]# wget ...

Chinese address http://www.apache-druid.cn/ 1. Introduction At present, there are many mainstream big data real-time analysis databases on the market. Why do we choose Apache Druid? Let's make a comparison first: Apache Druid is a real-time analytical database designed for rapid query analysis ("OLAP" queries) on large data set ...

grid mutual trust configuration Mutual trust configuration: connect two virtual machines. Node 1 virtual machine can operate node 2 virtual machine by entering password. First, let's understand the difference between rsa and dsa? DSA signature is faster, but validation is slower. A DSA key of the same strength as RSA (1024 bits) generates a ...

Source configuration of [Linux dictionary] preface The YUM software warehouse can complete the tasks of installing, uninstalling, and automatically upgrading rpm packages. It can automatically find and solve the dependencies between rpm packages without requiring the administrator to install each rpm package one by one and manually, m ...

Directory processing command ls LS (English meaning list) is used to view the files in the directory. The basic format is LS - parameter option; It should be clear that the parameters and options behind the LS command are optional. It is OK to directly execute ls. The main function of parameters and options is to adjust the command function ...

  summary The core source code of freeswitch is developed based on apr library, which has good portability on different systems. Hash table is widely used in development. The main scenario is the logic that requires high query efficiency. It is a typical data structure implementation of space for time. Most of the underlying libraries hav ...

file Directory tree /Bin: bin is the abbreviation of Binaries. This directory stores the most frequently used commands./boot: here are some core files used when starting Linux, including some connection files and image files./Dev: dev is the abbreviation of device. External devices of Linux are stored in this directory. The way to access de ...

1. Agent Components Components in Agent include Source, Channel, Sink. 1.1 Source The Source component can handle various types and formats of log data. Common source s in Flume: avroexecnetcatspooling directorytaildir Common CategoriesdescribeavroListen for Avro ports and receive Event s from external Avro client streamsexecExec source r ...

Linux three swordsmen awk awk description awk - pattern scanning and processing language； awk is gawk, which is more like a language and is very powerful in file processing; awk can customize variables, functions, loops, conditional statements, etc; awk judges and processes data line by line; awk usage awk command syntax Precedin ...