Linux

To install in the/usr/local directory as an example1. Download the installation package address: https://dev.mysql.com/downloads/file/?id=476936, save the installation package to/usr/local2. Unzip:Cd/usr/localTAR-ZXVF Mysql-5.7.22-linux-glibc2.12-x86

installation process　　 cmake Installation Reference previous article https://www.cnblogs.com/lixuchun/p/9240888.htmlMultiple instances use the/data directory as the total root of MySQL multi-instance, and then plan different MySQL instance ports as

Link files for Linux========================================The Linux link file is broken into hard link files and soft link files (symbolic link)Note: There are two restrictions on hard links: (1) cannot cross the file system, (2) cannot link to a

Experimental Requirements:??? Recovering files that are deleted in new disk SDB1Experimental steps:??? First, install the environment packagerpm-ivh/mnt/packages/e2fsprogs-libs-1.41.12-18.el6.x86_64.rpmrpm-ivh/mnt/packages/libcom_err-devel-1.41.12-18

The find command passes the matched file to the Xargs command, while the Xargs command fetches only a subset of the files instead of allXargs to process the file if not at the end, you need to add-I this parameterXargs Common Command ParametersThe

Awk 　　 awk is a powerful text analysis tool, with the search for grep and the editing of SED, which is especially powerful when it comes to analyzing data and generating reports. To put it simply, awk reads the file line-by-row, using spaces as the

Common Command Display: Output redirectionNo file will be created echo Hello > H.txtYou can also empty the file >h.txt>>: Append output redirection1>: Correct content output (standard output)2>: Output of the wrong content (standard error output)0\:

The history command is used to display a specified number of command commands, to read the directory from the historical command file to the history command buffer, and to write the directory in the history command buffer to the command file.When

Linux directory processing command ls　　　　　　　　　　　　　　　- H humanized display, file size in a convenient form outputOnly LS is executed on the emulator: No option is added to display the files that are visible in the current directory.The only execution

There are no sub-disks in Linux, only the root directory1. Path: "/boot/efi" 1 root directoryPWD Displays absolute pathsCD changes the path of the current directoryCD/presentation into the root directoryCd/boot into the boot sub-directoryCD/part

This approach is a good choice if you are in a small environment, and it is recommended that you design your network architecture in the overall architecture.Wondershaper is actually a TC-based script.Installation Method Yum-y Install

First, the main catalogue ???????????????????? ??????????????????? /bin?????? : Contains user command file, also shell command, available to all users and script program; ???????????????????? /boot? : The directory of the Linux core files and the

There are 3 servers, the IP is 192.168.174.10,192.168.174.11,192.168.174.12, respectively. Download the website and unzip the installation on each machine separately.# 创建kafka的安装目录mkdir -p /usr/local/software/kafka# 解压tar -xvf

Nginx InstallationFirst, install the compilation tools and library files-y install make zlib zlib-devel gcc-c+ + libtool OpenSSL OpenSSL-devel installs these dependent library files, A missing one that will drive you crazy on the road to

The fsck (file system check) is used to check and maintain inconsistent file systems. If the system is out of power or a disk problem occurs, the fsck command can be used to check the file system.FSCK Common Command Parameters-A: Automatically

The blkid command queries the file system type used on the query device. Blkid is primarily used to query the file system type, LABEL, UUID, and other information used by the system's block devices, including swap partitions. To use this command,

OverviewMost Linux servers do not recommend that users log on directly to the root user. On the one hand can greatly reduce the damage caused by misoperation, on the other hand, it also reduces the risk of privileged passwords being compromised in

fdisk Common command parameters -b   commonly used commands show:   View the new disk information [[email protected] omc]# fdisk-l Operation of one disk [[email protected] omc]# fdisk/dev/sda2  

Steps: Oracle website Downloads jdk1.8 Linux version and uploads to/usr/local directory Create the installation directory for the JDKmkdir -p /usr/local/software/java Unzip the downloaded tar package to the specified directorytar -xvf

Tag: The calculation process starts to determine that the CPU does not have nbsp resource Sch wait QueueThree scheduling strategies for the Linux kernel: Sched_other time-sharing scheduling policy, (default) Sched_fifo Real-time