Linux

# uname-a # View kernel/Os/cpu information# head-n 1/etc/issue # view OS version# cat/proc/cpuinfo # View CPU Information# hostname # View computer name# LSPCI-TV # list all PCI devices# LSUSB-TV # list all USB devices# lsmod # List of loaded kernel

File permissions:-rw-r--r--. 1 Fileinuser fileingroup 1623 May 4 19:33 fileName-: First-is file typerw-: Owner Permissions for filesr--: User rights in the same group as the filer--: Other user rights1: Number of hard linksFileinuser: Owner of the

About DockerDocker is an open-source application container engine that allows developers to package their applications and dependencies into a portable container, and then publish them to any popular Linux machine or virtualize them. Containers are

Linux User ManagementView the overall user situation　　cat/etc/passwd can view some of the user's basic information. It seems more convenient to use finger If you look at a specific user, you can grep /etc/passwd/etc/shadow/etc/group to write three

Because of the special feeling and interest in the data, I first contacted the MySQL database, and the MySQL database is mostly configured to run under the Linux system, so it has a strong interest in such an open source system as Linux. In my eyes,

Lofout Sign OutMount to view the devices that are already mounted on the systemMount-a automatically mounts based on the contents of the configuration file/etc/fstabWho check which users the system is logged into (can see user name, login terminal,

When a user logs on to a Linux system, the system automatically loads the profile class and the BASHRC class two file for that user, and when the user exits, it loads the logout class file, which is a fixed process. We can modify these files to

This topic is really big, just have a general understanding, if the detailed analysis is very difficult, roughly speaking, an operating system consists of: process scheduling, memory management, device driver, file system, network, where process

Application scenario: In the cluster construction process Nginx will usually proxy multiple tomcat to achieve high availability, but at this time if the Nginx machine down, will affect the use of the line, you can use Keepalived+nginx to do nginx

Start with the next JDK configuration:1. Check the system information to confirm whether it is 32-bit or 64-bit: uname-a2. Download the corresponding bits of the JDK package to the Linux system, which provides a 32-bit and 64-bit download link: http:

1, I node full ofHow to resolve:A) Delete unused temporary files and release the Inodeb) See if there are too many 0-byte files, because 0-byte files also consume Inode2, the disk is really not enough spaceFor large disks, reserved space remains the

1. View version numberUname-a # # View all information uname--help # # View Help on uname commands2. View existing normal usersVIM/ETC/PASSWD # # View passwd file (user's profile)Get the information as shown:The format of

Setting environment variablesFirst, modify the/etc/profile fileThis method is recommended when this machine is used only as a development, because all users ' shells have the right to use these environment variables when this configuration is used,

Ps-aux |grep TomactA tomcat process with no 8080 ports found. Use command: NETSTAT–APN8080 ports were found to be occupied by the Java process with PID 9658.Further use of the command: Ps-aux | grep Java, or directly: Ps-aux | grep PID ViewYou can

ISO: International Organization for StandardizationOSI: development system Interconnect modelSend the data, the upper layer to the lower layer, and then from the host a physical layer to the physical layer of Host B, the physical layer of Host B is

Video linkPotatoes:Station B:This chapter is aboutThe directory is as follows1.Objective:2.Basic formal notation:2.1ingrepRetrieving charactersString (Grep-iv I is ignoring case, V is reverse selecting show no search string ' search string '

One: Putty1. Download:Http://www.chiark.greenend.org.uk/~sgtatham/putty/latest.htmlIn addition to download putty also need to download PSCP, Psftp and other series of tools for file transfer use.Other sites to download, do not have the back door.2.

Linux Shell nature and working principle, linuxshell nature Shell nature The shell in Linux is equivalent to the "one-layer shell" of the operating system. It is a command language interpreter and provides users with interfaces to use the

Linux server performance (NIC traffic, CPU, memory, disk usage) monitoring, linux traffic Broadly speaking, website monitoring covers data collection and management of all non-business behaviors, including Website user behavior logs and business

Linux File Attributes  Overview of file properties (ls-lhi) Everything in linux is a fileAttributes of files or directories in Linux include: inode, file type, permission attribute, number of links, owner users and user groups, and last modification