Linux

Problem:When you use SSH, you are prompted to not find the command.Check the installation of SSH, found that the openssh-clients package is missing; SSH command enter the client command, the system does not install the Openssh-clients package by

Three VLANs are divided, and three VLANs will be made separately from each other.The PC3 will be used as a DHCP server to provide IP addresses for different VLANs,PC1 and PC2 will automatically get the IP address of the corresponding VLANAfter first

First open the LINUX01 virtual machine configuration IP address 192.168.10.10/24After you restart the network card using the Service Network Restart command, use Xshell to connect the virtual machine.Enter the Df–h command to view the current disk

User administrative rights VisudoExample: Create user Kang, Grant yum privileges, useradd permissions [[email protected] ~]# useradd kang[[email protected] ~]# passwd kangchanging Password for user Kang. New Password:retype New Password:passwd:all

Deploying PXE Remote Installation Services on LinuxExperiment: In a Linux virtual machine environment, deploy the PXE Remote Installation service, and finally implement the remote installation of the Linux system in another virtual machine (provided

To set read and write permissions for a folder:sudo chmod-r 777/dataPermission Code Descriptionsudo chmod 600xxx (only the owner has read and write permissions)sudo chmod 644xxx (owner has read and write permissions, group user only Read permissions)

For example:$ ssh -i ~/ec2.pem ubuntu@12.34.56.78First make sure that you can connect to the remote server as a password, or you can create a non-super Admin user and add sudo permissions.$ sudo ssh root@12.34.56.78The following steps are generated

1. User Information Sheet/etc/passwd1[Email protected] ~]$Cat/etc/passwd2ROOT:X:0:0: root:/root:/bin/Bash3 4 Field Information:5 Account: User name6 PASSWORD: Password placeholder # x True password file in/etc/shadow7UID: User ID # root is 0

PrefaceThe device driver can run in the kernel state, can also run in the user state, the advantages and disadvantages of user-driven online there are many discussions, and some have risen to the political, there is no more discussion here. Both

Works in Client/server network mode, supports workstations to download images from remote servers over the network, and thus supports booting the operating system over a network, during startup, the terminal requires the server to assign IP

Port Open:#/sbin/iptables-i input-p TCP--dport 80-j accept #/sbin/iptables-i input-p TCP--dport 22-j accept #/sbin/iptables -I input-p TCP--dport 3306-j ACCEPT then Save: #/etc/rc.d/init.d/iptables Save to view open ports: #/etc/init.d/iptables

Use of librariesHeader file:. h declarations of functions and variables such as # include , the search path of the default header file under LinuxSystem-Defined header files:/usr/include/usr/local/include/usr/target/include (different paths for

Driver compilation is divided into static compilation and dynamic compilation ; Static compilation is to compile the driver into the kernel directly, and the dynamic compilation is to compile the driver into a module.Dynamic compilation is also

Rsync syncs through servicesUsing service synchronization requires the Rsync--daemon service to be turned on, and the listening port (which is 873 by default and the port can be customized) is turned on and the client can communicate through this

Problem descriptionFor NFS services, samba services, or VSFTPD services, the system must provide a 7 * 24-hour network transfer service in a general enterprise. It can provide a maximum network transfer speed of 100mb/s, but when the number of users

The NFS (Network File system), which is one of the file systems supported by FreeBSD, allows computers in the network to share resources across TCP/IP networks. In an NFS application, a local NFS client application can transparently read and write

1. What do you think is the way to create files?VI or VIMTouchOther redirects2. View a file ls and ll results what's different?LS displays only a list of names, ll show permissions, time, size and other file details3. What is the identity of the

16.1 Tomcat IntroductionTomcat是Apache软件基金会（Apache Software Foundation）的Jakarta项目中的一个核心项目，由Apache、Sun和其他一些公司及个人共同开发而成。java程序写的网站用tomcat+jdk来运行tomcat是一个中间件，真正起作用的，解析java脚本的是jdkjdk（java development

The first time in 51 to write a blog, is my beauty, I hope this is a good start.The university is not the computer, so how much in later work there are a variety of problems. But this is not the key to stop me from learning the skills. The first

The Linux subsystem is now installed on Windows 10, and just recently. Net core has evolved, and I've been doing it on my own computer.The process of installing Ubuntu on Windows 10 is needless to say, it's all procedural stuff.Then after