Click Back to learn the path of the Linux command line and shell script3.1-Switch directory command manWhen you log in to the system and get a shell command prompt, you are usually in your own home directory.Verify with the PWD command:The pwd
SSH is a protocol that provides remote logins in a secure manner, and is the preferred way to remotely manage Linux systems today. It is the transmission of ciphertext to ensure security. In general, the Linux system is installed by default during
Requirements: Verify that expired certificates are not available in the system.Question: How do I generate an expired certificate?Workaround: 1. Adjust the system time2. Generate a Certificate3. Verify that the certificates StartDate and EndDate
System Detection Tool top command in LinuxThis article transferred from: https://www.cnblogs.com/zhoug2020/p/6336453.htmlFirst, describe the meanings of some of the fields in top:Virt:virtual Memory usage Virtual RAM1. The process "required" virtual
Linux mimics the UNIX habits of UseShellThe program used to run system directivesCan invoke other system directives in the systemInstructions can be combined into scripts to executeThe original Shell:bourne Shell (Bell Labs)The most commonly used
Viewing file information: lsLS is the abbreviation of the English word list, its function is to list the contents of the directory, is one of the most commonly used commands, it is similar to the dir command under
18.1 concept of the process
Program: The program is the executable file that is stored in the re-disk file
Process
An execution instance of a program is called a process
The execution instance of a program may consist
Lvs:linux Virtual server,4 layer router, compared to 7 layer agent, 4 layer agent process is not limited by the number of ports, because not to the application layer, Ipvs on the input link to the strong forwarding message to the route, there is a
ExamplesThe same group microsoft of two accounts and the justmine001 justmine002 need for co-ownership /microsoft/eshop of the directory development Rights in order to work together, but others are not allowed to access and access to the
structure diagram of the inodeHttps://www.cnblogs.com/xiexj/p/7214502.htmlI. Contents of the InodeThe inode contains meta information for the file, specifically the following:
The number of bytes in the file
User ID of the owner of the
View current calendar: CalThe CAL command is used to view the current calendar, and Y displays year-round calendars:Display or set time: DateSet the time format (requires Administrator privileges):date [MMDDhhmm[[CC]YY][.ss]] +formatCC for the year
A detailed explanation of the Linux top command usageFirst, describe the meanings of some of the fields in top:Virt:virtual Memory usage Virtual RAM1. The process "required" virtual memory size, including the library, code, data, etc. used by the
Files and directories Common command target
View Catalog Contents
ls
Switch directories
cd
Create and delete operations
touch
rm
mkdir
Copying and moving files
Relationship between file descriptors and open files in Linux
file Descriptor: is a non-negative integer in form. In fact, it is an index value that points to the record table in which the kernel opens a file for each process maintained by
All the servers in this area are CentOS 6.9,samba Client and NFS client are 7.2You need to install the package to complete the following operations: Yum install httpd mariadb-server (CentOS6.9 is mysql-server) nfs-utils samba php php-fpm php-mysql
Title: How to Install the Linux system in 001Linux system--method one System Requirements1. Win7 System 64bit Intel (R) Core i3 @2.4ghz memory 4GB2, hard disk: solid or mechanical at least 20GB guaranteed Virtual Machine SoftwareVmwareworkstation 10
1. Open the VMware Workstation Pro and open windows 7.2. Enter the password and press ENTER.3. Turn on the virtual machine rhk-2.4. Enter the user name as root and press ENTER.5. Enter the password and press ENTER.6. Select "Do not show this message
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