The ls command is used to display a list of targets and is a more frequently used command on Linux.The output information of the ls command can be highlighted in color to partition different types of files.
ls (option) (parameter)
-a Displays all files and directories (ls does not list hidden files by default);
-l All output i ...
Posted on Tue, 02 Jul 2019 10:17:19 -0700 by Raphael diSanto
Classification of SQL statements
Classification of SQL statements
DDL (Data Definition Languages) statement: Data Definition Language.These statements define different data segments,
Definition of database objects such as databases, tables, columns, indexes, etc.Common statement ke ...
Posted on Mon, 01 Jul 2019 09:52:57 -0700 by iceblox
Introduction:Logwatch is a log analysis tool developed using Perl.Logwatch can analyze Linux log files and send mail automatically to relevant processors to customize requirements.The mail function of Logwatch is to send mail with the mail server of the host system, so the system needs to install mail server, such as sendmail, postfix,Qmail, et ...
Posted on Fri, 28 Jun 2019 15:25:57 -0700 by hinchcliffe
Detailed Installation, Configuration and Use of Docker
Docker Including three basic concepts
By understanding these three concepts, we understand the whole life cycle ...
Posted on Fri, 28 Jun 2019 13:25:25 -0700 by qingping
Background: At first, there were many web projects in a tomact. After a period of time, it was found that tomcat could not be accessed properly. The phenomenon was that it felt that tomcat had been closed. Looking at the log, we found that tomcat had reported an error <java.lang.OutOfMemoryError: PermGen space> before we knew about the me ...
Posted on Fri, 28 Jun 2019 13:23:04 -0700 by jbachris
In Spring, when you use JMS to do RPC, you will use:
spring provides consistent style support in several ways of implementing RPC.
Here I intend to record and compare several RPC models.
HTTP Invoke ...
Posted on Thu, 27 Jun 2019 18:12:32 -0700 by david.brown
In skynet, we usually use Lua to write business layer logic, and each function module is basically a Lua service running in sandbox. However, when we need to develop extended libraries or modules with high performance requirements, we need to consider developing a dynamic library (. so) at the C language level and providing inte ...
Posted on Thu, 27 Jun 2019 17:52:26 -0700 by hossein2kk
When oracle on linux installs multiple servers, it can install multiple clones at one time, which is simple and fast.
1. Check whether the following packages are installed
yum -y install gcc gcc-c++ make binutils compat-libstdc++-33 compat-libcap1 \
elfutils-libelf elfutils-libelf-devel glibc glibc-de ...
Posted on Thu, 27 Jun 2019 17:46:53 -0700 by cockney
Linux users and OSX users must be familiar with the package manager. Through the package manager, you can install a package by one line of commands, and then the package manager will help you download the package from the source, while automatically resolving all dependencies (that is, downloading other packages on which the insta ...
Posted on Thu, 27 Jun 2019 12:13:36 -0700 by Firestorm ZERO
DNS Fast Configuration ExperimentDNS Fast Configuration Experiment:The implementation of DNS program under Linux is bind.x86_64. It is noteworthy that the running program is/usr/sbin/named. The dig tool for testing DNS needs to install bind-utils.x86_64 package.Forward analysis:Main DNS server ip address: 172.16.252.87From DNS Server 1 ip addre ...
Posted on Wed, 26 Jun 2019 16:12:59 -0700 by 244863