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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

awk command

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

php regular

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

awk command

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

http protocol

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

http protocol

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

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