RPM command Detailed (installation, uninstall, upgrade)

0, rpm commonly used commands1. Install a Package # RPM-IVH 2. Upgrade a Package # RPM-UVH 3. Uninstall a Package # RPM-E First through the RPM-Q < keyword > can be queried to the name of the RPM package, Then call the RPM-E < package na

Truncate a specified delimiter to slice a string split

Python Split () method Describe Python split () slices a string by specifying a delimiter, separating the NUM substring only if the parameter num has the specified value Grammar Split () method syntax: Str.split (str= "", Num=string.count

Curl usage

http://chinablog.blog.51cto.com/276793/280338 Http://blog.sina.com.cn/s/blog_485acedb0100i261.html Curl is a file transfer tool that uses URL syntax to work in a command-line manner. This article describes its simple usage. Curl is a file transfer to

Application/x-www-form-urlencoded and Multipart/form-data

Why do I have to add a property to the form where I uploaded the file enctypeUpload files in the form of <form> to add attributes Enctype= "Multipart/form-data", many people just rote know upload form to write, know it but do not know why. So w

Django upload multiple files at once, bulk upload

When you upload a file with Django, from request. files[' myfiles ' gets only one file at a time, but on the HTML page it is clear that you have selected multiple files with the HTML5 file control, using the Chrome browser, which allows you to select

Struts1 the next day

The basic writing process for struts:1 specified in Web.xml*.do ===== Org.apache.struts.action.ActionServlet2 requiring clients to send requests must follow the *.do approach3 Web processing class extends action{Execute (actionmapping,actionform,http

Memcached. NET client (i) ". NET Memcached Client library use" __.net

Download the client's 3 DLLs, Icsharpcode.sharpziplib.dll,log4net.dll,memcached.clientlibrary.dll Create a new simple console application: Class Program {private static void Main (string[] args) {Sockiopool pool = Sockiopool.get Instance

Easynetq Use (ii) "Connect Rabbitmq,ssl connection, Logging"

If you connect to a relational database, such as SQL Server. You'll find easynetq handling connections a bit strange. and relational database communications have always started with the client. Client opens a connection, issues an SQL command, proces

The meaning of program size:code=x ro-data=x rw-data=x zi-data=x

The meaning of program size:code=x ro-data=x rw-data=x zi-data=x Code: The size of the flash the program occupies, stored in flash. Ro-data (read-only data): Read-only-data, program-defined constants, such as const, stored in Flash. Rw-data (Readable

Valgrind for memory checking

Valgrind can check for memory leaks, crossings, etc. Reference: Http://www.cnblogs.com/wangkangluo1/archive/2011/07/20/2111248.html http://blog.csdn.net/sduliulun/article/details/7732906 To use Valgrind for memory checking: 1. Copy the debug version

Front-End modular, AMD and CMD

Recently in the study of CMD and AMD, on the Internet to see a good article, tidy up to see.In the early days of JavaScript development is to achieve a simple page interaction logic, a few words can be; now CPU, browser performance has been greatly i

10 of the best free FTP clients

1. FileZilla FileZilla is the first choice for most users because it is one of the promising and popular FTP clients. FileZilla is fast, can handle simultaneous transmissions, and supports Cross-platform ftp,sftp and FTPS clients, with many useful fe

Beetl2.7 Chinese Document

Beetl2.7 Chinese Document Turn from: http://ibeetl.com/guide/ Beetl Author: Li Jiazhi [xiandafu@126.com] (mailto:xiandafu@126.com) 1. What is Beetl Beetl current version is 2.7.23, relative to other Java template engine, with full-featured, intuitiv

The correct way to manage DbContext in EntityFramework6 (ii) "DbContext default Behavior"

(Translator: One of the difficulties with using EF to develop applications is their DbContext lifecycle management, and whether your management strategy will support the need for upper-level services to use stand-alone transactions, nested transactio

Front-End fetch time

1. Get Year date function Getnowformatdate () { var date = new Date (); var seperator1 = "-"; var Seperator2 = ":"; var month = Date.getmonth () + 1; var strdate = Date.getdate (); if (month >= 1 && month <= 9) {

Struts2 Regex Validator

The name of the regular expression validator: Regex, he checks whether the field of the checksum is matched by a regular expression Parameters: FieldName: This parameter specifies the name of the Action property of the checksum, and if the field ch

. NET uses RSA encryption to decrypt __.net

A shame is near courage. --Confucius PassWordHelper.cs Code: Using System; Using System.IO; Using System.Text; Using System.Globalization; Using System.Collections.Generic; Using System.Security.Cryptography; namespace Utils {///<summary>///

Django Template System--filters

Http://www.2cto.com/kf/201306/222155.html Remember, save every time Google Filter, change in the display form of the variable First, form: lowercase {{name | lower}} Second, in series: First escape text to HTML, and then convert each line to <p&

Imaplib

Source Code: lib/imaplib.py This module defines three classes, IMAP4, Imap4_ssl Andimap4_stream, which encapsulate a connection to a IMAP4 server and Implement a large subset of the IMAP4REV1 client protocol as defined inRFC 2060. It is backward comp

Troubleshoot multiple browser compatibility issues

troubleshoot multiple browser incompatibility issues First, the browser is not compatible with what. Browser incompatibility mainly performance of certain functions can not be used, site dislocation, the site some content does not show, web site eff

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