Linux

Linux Password complexity settings pam_pwquality, PAM_PASSWDQC (CENTOS7)The 1.Linux corresponding password policy modules are: PAM_PASSWDQC and pam_pwquality.Where the PAM_PASSWDQC module corresponds to the/etc/login.defs,pam_pwquality corresponding

If we forget the root password, we can change the password in the following waysSingle-user mode retrieve passwordFirst, we'll restart the server.The virtual machine needs to restart the power, the physical machine normal restart is goodVirtual

Description:When you install MySQL, a soft link is used to access the MySQL installation package, which avoids post-upgrade, and it is inconvenient to know its version, soft links and hard-link operations are as followsSource Address:

First, yum change domestic sourceFirst of allcd /etc/yum.repos.d/rm -f dvd.repoDelete the previously added local repository and restore the original warehouse backcp /etc/yum.repos.d.bak/* /etc/yum.repos.d/cp ../yum.repos.d.bak/* .The above two

w command: View system loadWLoad average the number of active processes that use CPU activity during the unit timeTo view the number of system CPUs (logical CPUs)Cat/proc/cpuinfo(When our process does not exceed the number of logical CPUs in our

Glew descriptionGlew (OpenGL Extension Wrangler) is another auxiliary library of OpenGL that encapsulates the process of getting function addresses from the OpenGL library, and also includes some OpenGL programming methods that can be used across

View a number of tutorials, VirtualBox and Ubuntu have been installed to complete. The following is an experimental report, an experiment, an unsolved problem, and an understanding of the basic basics of Linux learning.Experiment three user and file

concepts and differences of TTY, Pty, and PTS for Linux systems TTY (collectively referred to as terminal equipment):The word "TTY" originates from teletypes, or teletypewriters, which originally refers to a telex typewriter, which is used

Set sourceEdit/etc/apt/sources.listNano/etc/apt/sources.listAfter emptying everything in the file, addDeb Http://mirrors.ustc.edu.cn/kali kali-rolling main contrib Non-freeSave exitUpdateRun the following command in turnApt-get UpdateApt-get

First, prefaceAfter the Memory initialization code Analysis (i) and the Memory initialization Code Analysis (ii) of the transition, we finally came to the core of memory initialization: Paging_init. Of course, this article can not parse all the

First, prefaceProcess switching is a complex process, and this article is not intended to describe in detail all aspects of the process switching, but rather to focus on a little bit of knowledge in process switching: the processing of TLB. To be

The previous versions of Kali can only be run on a virtual machine or dual system, recently Kali is online in the Microsoft APP store, and now we just need to download it in the Win10 store.Let's take a look at the installation processFirst open the

How to install mysql5.7.21 on centos in Linux, Preparations: Environment: linux System: centos6.4-x86-x64 Installation Tool: mysql-5.7.21-x86-64 Software Download: Mysql Or: mysql-5.7.21 Binary Package. Or use wget for download in

Shell script entry, shell script There are two ways to use Shell script: ① Interactive: each time a user inputs a command, the Shell immediately executes the command; ② Batch: You can compile a complete Shell script to execute many commands in the

In ubuntu, Tomcat is bound to port 80, and ubuntutomcat is bound to port 80. Reprinted from: http://www.cnblogs.com/mabaoqing/p/7808354.htmlA problem occurred when deploying your own small project. In the tomcat server. xml modification, the port 80

Ubuntu on VMware is recommended for building a file system larger than 2 TB, ubuntu2tb 1 . The partition where Ubuntu is located, that is, the/dev/sda disk (if you want to see it intuitively, search for gparted In the Ubuntu application market. The

Three Tomcat modes and concurrent tuning, and tomcat Tuning Three Tomcat modes and concurrent optimization.Three Tomcat running modes are available: BIO, NIO, and APR. These three types are described as follows: 1. bio The default mode has very

Build a blog website based on LAMP 1. First check the LAMP Environment [root@cairui htdocs]# ps -ef | grep httpdphp 13160 1 0 Mar03 ? 00:00:00 /opt/apache2.2.34/bin/httpd -k startroot 19311 1 0 Mar03 ? 00:00:02

Use the letsencrypt. sh script in Centos 6.8 to configure a free https certificate for nginx. 1. Download letsencrypt. sh wget https://raw.githubusercontent.com/xdtianyu/scripts/master/lets-encrypt/letsencrypt.confwget

Use fabric to deploy Baidu BMR spark cluster nodesPreface The AI competition that I attended with my friends entered the finals for a while, and I have been imagining to combine the data preprocessing process with the deep learning phase. However,