Linux

UseStatistics file or directory occupies hard disk space sizeUsagedu [OPTION] [FILE]Du [OPTION]--files0-from=fCommon parameters-A,--allCount all files, not just directories-B,--bytesBytes in units of statistics-C,--totalTotal output

"1" displays the date of the instruction: dateExample:(1) #date +%y/%m/%dResults: 2018/02/27(2) #date +%h:%mResult: 10:48"2" displays the calendar's instructions: Calformat:Cal [Month] [year]Example:(1) #cal 2 2018(2) #cal 13 2018Results:

First, install the Anaconda1. DownloadFor: https://www.anaconda.com/download/#linux2. Install the anaconda and execute the command:Bash ~/downloads/anaconda3-5.1.0-linux-x86_64.sh3. The configuration path is displayed during the installation

11.6 MARIADB Installation The MARIADB installation process is similar to MySQL, but the difference is that because we have both MARIADB and MySQL installed on the same machine, we need to tweak the configuration files and startup scripts to

SummaryToday, during the writing of the socket, during which I encountered viewing the status of a certain port, I then looked it up from the Internet and summarized it.ContentAs we all know, the port is not independent, it is dependent on the

To have the system mount the partition automatically, you need to modify the/etc/fstab fileThere are 6 fields in/etc/fstab1, the device name used to specify the device name can also be a volume label2, Mount point, the partition will be associated

SSH Remote Login tool based on RSA algorithmRSA Asymmetric Encryption algorithm:Public Key: External publicPrivate key: Private storage 　　 The private key can be opened with the public key, and the public key can be opened with the private key;Data

Today, when locating a problem, look at the message log and need to know which xterm terminal is operating in the message log. Compared to half a day to find that the original log can be distinguished by pts. As shown below: 2018 -02 -12t15: 55 : 10

fdisk可以对硬盘进行分区，采用传统的问答式界面。能划分磁盘成为若干个区，同时也能为每个分区指定分区的文件系统，比如linux 、fat32、 linux 、linux swap 、fat16 以及其实类Unix类操作系统的文件系统等。下面为大家介绍分区管理工具fdisk的使用。1. View partitions:Fdisk-l [-u] [device ...] list specified device disk partition information2. Manage

Logical Volume Manager, when the partition is not enough, you can create a larger partition and then copy it in, but waste time. LVM can adjust the partition size flexibly and can dynamically combine partitions. The partition size is fixed and

1 Installing the VSFTPD assemblyAfter installation, there is a/etc/vsftpd/vsftpd.conf file, which is the vsftp configuration file.[[email protected] ~]# yum -y install vsftpd2. Port description of FTP Active mode and FTP passive modeFTP is a

We are familiar with the installation of Linux software:Https://zhidao.baidu.com/question/504980243.htmlHere's the pros and cons of the source installation and Yum installation, and you can seeOne. Source Package InstallationThe usual approach is to

Device FilesThe driver associated to the device, which is the access entry for the deviceDevice numberMajor main device number, differentiating device type, used to indicate the driver required by the deviceMinor device number to differentiate

The ln command is used to create a connection for a file, the connection type is divided into two types of hard and symbolic connections, and the default connection type is hard connection. If you want to create a symbolic connection, you must use

Principle of Redis master-slave synchronization-SYNC [Switch], principle of redis master-slave-sync Similar to the reason for MySQL master-slave replication, although Redis reads and writes fast, it also produces a particularly high read pressure.

Learn Linux multi-task Programming step by step, linux multi-task ProgrammingSystem Call 01. What is system call?02. I/O operations (File Operations) called by Linux)03. file descriptor replication: dup (), dup2 ()  Multi-process multi-task

Install JDK, Tomcat, and MySQL basic software in Linux. 1. Install JDK After Centos6.5 is installed, OpenJDK is installed by default for Base Server. You must first Delete OpenJDK. 1.1 view the previous jdk Check whether openjdk has been installed

Linux ISCSI multi-path Mount Storage Preparations:After the LUN is created, the lLUN is divided into independent groups, and the server's iqn information is added to the LUN. If it is placed in the default group, the hard disk information displayed

Introduction to Spark Streaming and Storm Spark Streaming and Storm Spark Streaming is in the Spark ecosystem technology stack and can be seamlessly integrated with Spark Core and Spark SQL. Storm is relatively simple; (1) Overview Spark

How to install Apache Maven on CentOS and other Linux distributions Apache Maven is an open-source automated building tool mainly used to create JAVA-based projects. Although mainly used for Java projects, Apache Maven can also be used to build and