Linux

Shared memory can be said to be the most useful inter-process communication and the fastest form of IPC. Two different processes A, B shared memory means that the same piece of physical memory is mapped to the respective process address space of

"Global (System) configuration file"/etc/crontabLinux main configuration files are in the ETC directory.CD/etcls cron*Vim crontabAccess to CRON.D (service)CD CRON.DUse the cat command to view the Sysstat file (the Cat command is a text output

In accordance with the "Linux" layout lamp environment in Ubuntu (click to open the link) to do a good job in the lamp environment, you can use the Gredit text editor to write PHP, and then use the terminal to query the contents of MySQL, but this

One: The startup, shutdown, and error tracking of the Tomcat service under Linux, after using putty to connect to the server remotely, typically starts the shutdown of the Tomcat service in several ways:Switch to the bin directory under the Tomcat

Original: http://tech.meituan.com/cgroups.htmlIntroductionCgroups is a mechanism provided by the Linux kernel that can limit the resources used by a single process or multiple processes, and can provide granular control over resources such as CPU,

Today, when solving a remote server backup problem, the LFTP knowledge is used. Tidy up as follows:LFTP features more powerful, compared to the original with FTP, a lot of convenience.1. Login:Lftp Ftp://[email protected]pwd:*****or open

1. Basic usage:$ BC Or$ echo "5*4" | bc20$ echo "5+4" | bc9$ echo "5-4" | Bc1You can also write a calculation to a file and then calculate it once.$ cat calcfile 5+56+7$ BC You can also use the here Command:$ BC 1+4> 4-1> 2*4> HERE538You can use

Generally speaking, formatting a partition of the USB stick is very simple, only need to use the MKFS command to specify the target file system, the example is as follows:sudo-lsudo mkfs -t vfat /dev/sdb1The-t parameter is the destination file

Drive Classification:For drivers, we generally classify them in two ways: General taxonomy and bus classification.According to the general classification, can be divided into the following three categories:1. Character Device:ToBytes is the minimum

Linux daily use command DaquanJava codeWww.ahlinux.com001, daily maintenance of common query commands#top Show System processes#clear Cleaning up screen information#cat/etc/redhat-release View System version information#cat/proc/version to view

Original linkSamba ClientUbuntuRedhatUbuntu GUI Tools 1, list the shared folders provided by an IP addressSmbclient-l 198.168.0.12, access to an anonymous directory smbclient//192.168.0.1/directory name in Security=share mode3, use smbclient

System software package management in Linux (rpm, yum, and source code package installation) 1. rpm ToolRpm is called RedHat Package Manager. It is a Red Hat software Package management tool with an open design concept. It is not only available on

Write an address book code in python Reference knowledge List + dict: used to temporarily store user data CPickle is used to access formatted files. Still use file for file storage Solve the Problem 1. Start to do it Original code

[Linux] configure the LAMP environment in Ubuntu It is said that a good job of LAMP, that is, Linux + Apache + Mysql + php, is already equivalent to an intermediate php program level. Of course, you need to have a good job of php, and then you need

CentOS 6.5 x86_64 custom automatic system deployment I. Prepare the production environmentLab environment:VMware WorkstationCentOS-6.5-x86_64-minimal minimal installationAfter installation, we will use the install. log and anaconda-ks.cfg files

Ubuntu users install Atom 0.187.0 Text Editor Atom is an open-source, cross-platform text editor developed by GitHub with a simple and intuitive graphical user interface. It has developed many interesting functions: Supporting CSS, HTML, WEB

Getting started with Linux: Use yum to download the RPM package without installing it Q: I want to download an RPM package from the standard repository of Red Hat. Can I use the yum command to download an RPM package without installing it? Yum is

Compress (zip) and decompress (unzip) commands in Centos When using ftp to back up data, it takes a lot of time because there are too many files, so we need to use the compression and decompression commands, for example, I need to back up

How to Use Zorka, an open-source Java Monitoring Platform In terms of Java Plug-in tools, we have been using Kieker. Today we have studied another Java monitoring platform Zorka. Here we take Windows + Tomcat as an example to record the most basic

How to disable the server signature on an Apache website Server Problem: When The Apache2 website server returns an error page (for example, the 404 page cannot be found and the 403 page is forbidden to be accessed), the website server signature is