Linux

1. View the contents of the directory>ls//listing the file information in the directory>ls-l//View the catalog file with "more information">LS-A//View Directory "All" (including hidden files) files>ls-al//View Directory "All" (including hidden files)

Special permissions and ACLsSpecial permissionsSUID:When running a program, the owner of the corresponding process is the owner of the program file itself, notThe user itself, only valid for the binary program, the performer must have X permission

[BZIP2]Bzip2 Compress the file into bz2 format and delete the original file.Suitable for large file compression-D Extract-Specifies the compression ratio. ∈[1,9]-KKeep the original fileRelated Commands bunzip2[BUNZIP2]BUNZIP2 Decompression

1. Use the name option: The file name option is the most common option for the Find command, either by using the option alone or with other options. You can use a file name pattern to match files, remembering to enclose the filename pattern in

about PWD CommandsIn Linux, use the PWD command to view the full path to the current working directory. Simply put, you will have a current working directory every time you operate in a terminal.When unsure of the current location, PWD is used to

Linux Beginner-firewall articleFirewalld is a firewall of another program, and iptables the same, but the use of more than iptables simple point, do not need to know 3 tables and 5 chains can also be used.1. Basic commands of

Use the background:Operating system: CentOSVirtual machine: VirtualBoxThe RAC system requires a dual network interface, a public network environment, and a private network environment, which requires two networks to be built.Select Preferences in

I. Chown command and the function of the CHGRP commandSometimes you need to change the owner of a file or directory, such as a person leaving or a developer creating an application that needs to belong to a system account in a test or production

Nohup command: If you are running a process and you feel that the process will not end when you exit the account, you can use the Nohup command. This command can continue to run the process after you exit the account/close the terminal. Nohup is the

My PS1 command prompt: ps1= "\[\e[32;40m\][\[\e[32;40m\]\u \[\e[32;40m\]>>\h \[\e[32;40m\]\w \[\e[36;40m\] (\A) \[\e[32; 40m\]] \[\e[0m\]\$ "1. Set the display of PS1 facePS1 (is the number 1 instead of the letter L), each version of Bash's PS1

8) There is a class of users in the system called Pseudo-user (Psuedo users).These users also occupy a record in the/etc/passwd file, but cannot login, because their landing shell is empty, their existence is mainly convenient system management, to

Enter Https://gitee.com/profile to view your account number and email address, put it down in Notepad and use it below. Open git input command git config–global user.name "yourname" carriage returngit config–global user.email "[Email

One, customized RPM package1. Environment [[email protected] ~]# cat/etc/redhat-release CentOS release 6.9 (Final) [[email protected] ~]# uname-r 2.6 . 32 -696 ~]#/etc/init.d/iptables statusiptables: Firewall is not running.[

Jenkins: A tool for continuous integrationGitHub: Remote Store codeMaven: Create a project with MAVEN, configure POM.XM dependenciesGit: Local repository, can commit code to remote (I use Git to submit code in git Bush here Command)Linux: Operating

1.chrome is now not allowed to run with root.2. No interface chromedriver calling Chrome will make an error.The first problem solution:Create a new user.Runuser-l username-c ' Python3 xxx.py 'Second question:1. Installing XVFB and

To scroll through the installation vscode you need to add the source and then installTake CentOS for example:sudo rpm--import https://packages.microsoft.com/keys/microsoft.ascsudo sh-c ' echo-e "[Code]\nname=visual Studio code\

Description: No explanation, operations should be configured on each server to configure this problem to reduce the occurrence of disastersMethod:1, SAFE-RMSAFE-RM is an open source software used to replace the less secure RM, you can configure the

What is NFSNetwork file system, the main function is to allow different hosts to share files or directories through the network (usually LAN)NFS belongs to the local file storage serviceDisadvantage 1: 1234567

Linux Advanced Programming Fundamentals Series: Inter-thread communicationReprint: Original Address http://blog.163.com/jimking_2010/blog/static/1716015352013102510748824/Inter-thread communication mechanism:Threading is a lightweight process. the

Install JDK online for CentOS and jdk online for centos 1. Install jdk online using the yum command 1. view the jdk version currently supported on the cloud [root@localhost ~]# yum search java|grep jdkldapjdk-javadoc.noarch : Javadoc for ldapjdkjava-