
AWK command usage
The most basic function of awk is to browse and extract information based on specified rules in a file or string. It is used to divide a line into several "fields" for processing. Suitable for processing small data.
Dec 12, 2016 pm 04:02 PM
Linux awk command
AWK is a language for processing text files and a powerful text analysis tool. The reason why it is called AWK is because it takes the first characters of the family names of its three founders, Alfred Aho, Peter Weinberger, and Brian Kernighan.
Dec 12, 2016 pm 03:55 PM
A simple way to match URLs with regular expressions in php
Simple way to match URLs using regular expressions, test code provided
Dec 12, 2016 pm 03:54 PM
Commonly used functions for PHP regular expressions
Friends who learn PHP regular expressions have to know some functions. After reading the following article, you will know how to call regular expressions in PHP.
Dec 12, 2016 pm 03:51 PM
Detailed explanation of linux awk command
Awk is a powerful text analysis tool. Compared with grep search and sed editing, awk is particularly powerful when it analyzes data and generates reports. To put it simply, awk reads the file line by line, slices each line using spaces as the default delimiter, and then performs various analysis and processing on the cut parts. There are 3 different versions of awk: awk, nawk and gawk. Without special explanation, it generally refers to gawk. Gawk is the GNU version of AWK. Awk's name comes from the first letters of the surnames of its founders, Alfred Aho, Peter Weinberger and Brian Kernighan. Actually AWK's
Dec 12, 2016 pm 03:43 PM
In-depth understanding of HTTP protocol and principle analysis of HTTPS
In-depth understanding of HTTP protocol and principle analysis of HTTPS
Dec 12, 2016 am 11:30 AM
In-depth understanding of HTTP protocol and principle analysis of caching
In-depth understanding of HTTP protocol and principle analysis of cache. The cache will save a copy of the output content according to the request, such as html page, picture, file. When the next request comes: if it is the same URL, the cache will directly use the copy to respond to the access request. Instead of sending the request again to the origin server.
Dec 12, 2016 am 11:26 AM
Deep understanding of HTTP protocol
HTTP is the abbreviation of Hyper Text Transfer Protocol. Its development is the result of cooperation between the World Wide Web Consortium and the Internet Engineering Task Force (IETF), which eventually released a series of RFCs. RFC 1945 defines the HTTP/1.0 version. The most famous of these is RFC 2616. RFC 2616 defines a version commonly used today - HTTP 1.1. HTTP protocol (HyperText TR
Dec 12, 2016 am 11:14 AM
Detailed explanation of HTTP protocol (really classic)
HTTP is an object-oriented protocol belonging to the application layer. Due to its simple and fast method, it is suitable for distributed hypermedia information systems. It was proposed in 1990 and has been continuously improved and expanded after several years of use and development. The sixth version of HTTP/1.0 is currently used in the WWW. The standardization work of HTTP/1.1 is in progress, and the HTTP-NG (Next Generation of HTTP) proposal has been put forward.
Dec 12, 2016 am 11:08 AM
iOS custom prompt pop-up box to achieve an effect similar to UIAlertView
iOS custom prompt pop-up box to achieve an effect similar to UIAlertView
Dec 12, 2016 am 10:54 AM
PHP+iframe image upload achieves instant refresh effect
PHP+iframe image upload achieves instant refresh effect
Dec 12, 2016 am 10:05 AM
Implementation of custom menu in php WeChat development
Implementation of custom menu in php WeChat development
Dec 12, 2016 am 10:01 AM
Use Yii2 to implement master-slave database settings
Use Yii2 to implement master-slave database settings
Dec 12, 2016 am 09:52 AM
Tutorial on setting up LNMP environment under centos 7.2
Tutorial on setting up LNMP environment under centos 7.2
Dec 12, 2016 am 09:48 AM
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