Linux

Reprinted from: http://www.linuxidc.com/Linux/2016-11/137608.htmOne might wonder why MySQL jumped from 5.x to 8.0. In fact, the MySQL 5.x series has lasted for many years, from the time it was acquired by Oracle to 5.1, and after the acquisition has

Tracks: TrackSector: Sector 512 bytesHead: HeadCylinder: CylinderIdentify the hard disk and partition Plan = + format and mount usingMbr/msdos partition mode–1~4 primary partition, or 0~3 primary partition + one extended partition (nLogical

Yum PS top pidof kill killall TR Cut command using the 1 Yum commandyum repolist all     list all warehouses. Yum List all     lists all packages in the repository Yum Info package name   View package Information Yum Install package name  

1, use df-h command to find a relatively large disk space2. Set swap file size to 2GDD if=/dev/zero of=swapfile bs=1024000 count=3. Enable virtual memory1. Set the swap file to a swap partition file12# (because this file will also occupy disk space,

First, Linux system installationSystem installation can be divided into two categories: physical machine installed Linux, virtual machines (common virtual machine software has two kinds: VMware and VirtualBox) install Linux.Installation process

1. Create a Java directory under the/usr/directory[Email protected] ~]# mkdir/usr/~]# Cd/usr/java2. Download the JDK, then unzip it, or download it in advance and copy it.[[email protected] java]# Curl-o http://[[email protected] java]# TAR-ZXVF jdk-

Command Category:1. Executable programs, such as binary files under/usr/bin.2.shell built-in command CD is built-in command but can be which find3.shell functions, small-scale shell scripts are mixed in environment variables.4. Command

Linux. So is based on a dynamic link under Linux, which functions and acts like a. dll file under Windows.Typically, the link to the library is done at compile time (compile). All related object files (objects file) are linked to an executable

Conditional Delete command : Find/directory-type f-name "file name"-exec rm {} \; "Common"Delete *.txt files together : Find/directory-type f-name "*.txt" |xargs rm-fExclude test character display: Grep-v test Abc.txt "-V for Exclude, display

Tag: Font timestamp modified hash account indicates ACK command is locked1.linux and Windows inter-pass filesXsheel supports Linux and Windows inter-pass1. need to install a software lrzsz on Linux Client2. after installation, you can use the

Set CENTOS7/REDHAT7 boot default into command line modeFirst use the root user to open the configuration file Inittab, execute the command:Vim/etc/inittabSince Centos7 's inittab is no longer in use and is managed with SYSTEMD, it is set to boot

Primary partition, extended partition, logical partitionThe number of primary and extended partitions is = 4Logical partitions can only start at 5, and logical partitions may be multiple1. General PartitioningBoot is the boot partition 200M primary

1. Rules of MakefileThe framework of makefile is composed of rules. When the make command executes, it looks for various rules in the makefile file and then runs the rules after parsing the various rules. The basic format of the rule is:

One, the SU commandSU Switch User-+ user name switch User (root switch no password for normal user.) Otherwise, a password is required)Plus-is the switch to the directory of the home directory, switching thoroughly. Do not add is to switch to/root

1. BackgroundRecent company source control tools from SVN to git, so to deploy Gitlab on the server, a total of two servers deployed, one is Ubuntu server 17.04, one is Centos7. In the process of deployment encountered a lot of problems, found that

# Total number of cores=="physical ID"| Sort| uniq| WC-"CPU Cores"| "processor"| Wc-lView memory Information# Cat/proc/meminfo/proc DirectoryThe Linux kernel provides a mechanism for accessing kernel internal data structures and changing kernel

1, ext File system family: Linux 6.x and its previous major file system types, with the increasing prevalence of terabytes of large hard drives, has been quickly exited the Linux stage. In the absence of special requirements of the operating

Build svn on Linux and build Linuxsvn Yum-y install subversion 2. Create a version Library Svnadmin create/home/svn/test 3. Configure the user Vim/home/svn/test/conf/passwd Username = Password 4. Configure permissions

Use iptables as a NAT proxy to access the Internet, iptablesnat Background:One server A cannot access the Internet and is connected to server B through the Intranet. Server B can access the Internet, and server A can also access the

Linux Process Resource occupation high Cause Analysis Command record, linux Cause Analysis 1. view the thread of the process: Ps-eLf | egrep 'gateserver | uid' 2. Trace thread call: Strace-p 15530 3. Count the CPU time for function calls in the