how to use ascii

Regular character Description \ Marks the next character as a special character, or a literal character, or a backward reference, or a octal escape character. For example, ' n ' matches the character ' n '. ' \ n '

FTP commands are one of the most frequently used commands for Internet users, and a large number of FTP internal commands are encountered, whether using FTP under a DOS or UNIX operating system. Familiar with and flexible application of FTP internal

For a website, a good ranking is no more than a pen, when we use different optimization methods to improve the weight of the site, improve the site rankings, we must pay attention to the following four small details: One, alt label When we add a

If you know the distribution of the key in the HBase data table, you can pre-partition hbase on the table when you are building it. The benefit of this is to prevent hot issues from large data insertions and improve the efficiency of data insertion.

If you can be familiar with and flexible application of FTP internal commands, it is really more than half the effort. The command line format for FTP is: Ftp-v-d-i-n-g [host name], where -V Displays all response information for the remote server;

Today, the second article, which I'm going to introduce, is about the issues associated with Unicode encoding and ASCII coding in Windows programming. I do not know you novice friends encounter such a problem did not, a new Windows application,

Regular expression syntax A regular expression is a literal pattern consisting of ordinary characters (such as characters A through Z) and special characters (called metacharacters ). This pattern describes one or more strings to be matched when

Grammar | Regular regular Expressions grammar sentences Here are some examples of regular expressions that you might encounter: /^\[\t]*$/"^\[\t]*$" matches a blank line. /\d{2}-\d{5}/"\d{2}-\d{5}" verifies that an ID number is made up of a 2-bit

Senior After reading the introductory and advanced chapter, a little practice, crack the general website is no problem. But if you hit the list name, or the program author filters some special characters, how to

FTP commands are one of the most frequently used commands for Internet users, and a large number of FTP internal commands are encountered, whether using FTP under a DOS or UNIX operating system. Familiar with and flexible application of FTP internal

I believe you must have encountered garbled problem, why is garbled? How does the output data be different from the input? Recently in the summary of encryption problems, but also encountered the same trouble. So let's focus on solving the problem

baktime=$ (date +%y%m%d%h%m%s) find/usr/local/auto_databasebak-mtime +4-type f-exec/bin/rm {} \; /usr/local/mysqlmysql/bin/mysqldump-h127.0.0.1-uroot-ppwd--opt-r--single-transaction xj_gameserver | gzip >

I. Introduction of DRBDDRBD Full Name distributed replicated block device, for distributed replication block devices, software-based implementations that do not share anything, replicate the way the disk is built to work in mirrored mode, similar to

Determine the database type by the engine that connects to the database: Access:microsoft JET Database Engine Sqlserver:microsoft OLE DB Provider for SQL Server SQL injection will not succeed if you add a statement such as CInt (parameter) to the

With the development of B/s pattern application development, more and more programmers use this model to write applications. However, due to the lack of entry threshold in this industry, the level and experience of programmers is also uneven, a

The compression command has two obvious advantages: one is to reduce the storage space, and the other is to reduce the transmission time when transmitting over the network.According to statistics, the gzip command has a compression rate of 60%-70%

Use of the OD command under LinuxOriginal: http://blog.csdn.net/shylock_backer/article/details/46473283Name: ODFunction: Format the data in the output fileFeed:od [OPTION] ... [FILE] ...od [-abcdfilosx] ... [FILE] [[+]offset[.] [b]]OD--traditional

In Linux, Curl is a file transfer tool that works under the command line using URL rules, which can be said to be a powerful HTTP command-line tool. It supports file upload and download, is a comprehensive transfer tool, but by tradition, the custom

Directly on the code:SelectCaseWhen the ' Workreport ' =ltrim (RTRIM (' Workreport ')) then ' trim to space success 'When ' Workreport ' =replace (' workreport ', ' ", ') Then ' REPLACE ' to space success 'When ' Workreport ' =replace (' Workreport '

I. Common compressed files Windows. rar. zip. 7zLinux. Zip,.gz,.bz2,.xz,.tar.gz,.tar.bz2,.tar.xzFile compression saves memory and can save transfer speedIi.. gzipFirst, create a folder/tmp/d6z/Found some big files to write 1.txtFor examplefind /etc/