Linux

About "Security hardening"Safety is relative.Reinforcement may involve all aspects of the system: (1) hardware. For example: Intel X86 Hardware vulnerability; (2) operating system. Run from installation to installation and (3) system services. The

Linux Boot Process InsiderGuidance from a master boot record to the first user space applicationIn the early days, starting a computer meant feeding the computer a tape containing a bootloader, or manually loading the bootloader with the front panel

If you want to run a Windows system on your Mac, look for crossoverSo what if you want to run a Windows system on Linux?Of course we're looking for crossover.Using crossover Linux In addition to installing Windows software included in the software

Sometimes, the online server uploads files or folders, does not do the secret key, do not know the user's relevant password, SCP and rsync can not be used.It is recommended that you use NC commands to communicate between Linux servers, provided that

[TOC]1. IntroductionThe content of this article is based on Linux Kernel 2.6 source code, in-depth analysis of its process model, the main analysis of the following: What is a process (the concept of a process) How the operating system

Date Displays the current time and date Cal displays the current month of the Calendar DF View the number of free memory on the disk in the available PWD print current working directory CD switch directory LS list Folder contents absolute path:

1. Check for Hyper-threadingTo view the number of threads:grep siblings/proc/cpuinfo |uniqTo view the number of physical cores: grep cores/proc/cpuinfo |uniq2. Check the operating system versionCat/etc/redhat-releaseLsb_release-a3. Check the file

The so-called software problems, the majority of IP parameter settings are wrong Ah, routing is not ah, there are DNS IP settings errors and so on, these problems are software settings! As long as the setting changes, using some detection software

Basic command:Date:date--helpUsage: date [options] ... [+ format]Or: Date [-u|--utc|--universal] [MMDDHHMM[[CC]YY][-SS]]Date [MMDDHHMM[[CC]YY][-SS]]: SetMM: MonthDD: DayHH: WhenMM: MinYY: two-digit yearCCYY: four-bit year-ss: SecondsTwo types of

Linux System account file mainly has/etc/passwd,/etc/shadow,/etc/group,/etc/gshadow four files, which and user-related files/etc/passwd user profiles,/etc/ Shadow shadow password file, and user group-related files/etc/group,/etc/gshadow/ETC/PASSWD

First, the creation of the file system-partition formatFormatting:Low-level formatting: dividing tracksAdvanced formatting: Create a file system that divides the entire partition into small logical addressing units of the same size, each of which is

Fwm:firewall MarkMARK target 可用于给特定的报文打标记--set-mark value 其中：value 为十六进制数字借助于防火墙标记来分类报文，而后基于标记定义集群服务；可将多个不同的应用使用同一个集群服务进行调度Implementation method:在VS主机打标记：iptables -t mangle -A PREROUTING -d $vip -p $proto –m multiport --dports $port1,$port2,… -j

Process-related commands on Linux systems:To view the class command:Ps,pstree,pidof,pgrep\pkill,top,htop,glances,dstat,vmstat,pmapManagement class Commands:Bg,fg,jobs,kill,killall,nohup,nice,renicePstree command:Pstree-display a tree of

命令行提示符[[email protected] ~]## 超级用户$ 普通用户当前所在目录 ~用户的家目录管理员超级用户 /root普通用户 　　 /home/用户名/所在目录linux 命令格式命令 空格 [选项] 空格 [参数]选项，使用或调整命令的功能参数：参数四命令操作的对象，如果可以省略，说明有默认参数显示注意:在linux下是严格区分大小写，所有内容！命令全部小写Linux view and create directory files and other commands 　　

Logging in bridging mode configuring the Internet 1. Configure the corresponding virtual machine network mode to "Bridging mode"2. View and configure the network card and IP address of this computer (Windows)Example configuration:After configuration,

Virtual Machine Ubuntu16.04 network settings and other common settings, virtual machine ubuntu16.04 By default, Ubuntu is not connected to the Internet. As a result, the basic library software cannot be updated, and tools such as putty and FileZilla

Linux FTP build tutorial, linuxftp build tutorial I. Install the ftp service Set IP Address Attach a cd Disable iptables Firewall Disable selinux/[root @ localhost ~] # Setenforce 0 [Root @ localhost ~] # Cd/media/cdrom/Packages/ [Root @ localhost

ArchLinux installation and configuration graphic interface tutorial, archlinux Interface 1. Install yaourt Vim/etc/pacman. conf # Add [archlinuxcn] SigLevel = Optional TrustAll Server = https://mirrors.ustc.edu.cn/archlinuxcn/$arch

Linux performance monitoring software (Perf, PAPI) Installation tutorial, perfpapi Perf Perf is a built-in Linux kernel performance tool. The installation process is as follows: 1. Download a Linux kernel source code and decompress it into

Kubernetes 1.9 clusters use traefik to publish services This section describes how to use traefik to publish services in the kubernetes 1.5.2 cluster environment. Traefik is deployed in the daemonset mode. The http protocol is used to connect to the