sed command in unix

-Honeydew Autumn: Http://www.cnblogs.com/bazhahei21-Zhang Jing: http://www.cnblogs.com/zj2122-Huang Tinghui: http://www.cnblogs.com/1796440575hth23-Liu Bo: http://www.cnblogs.com/oppppo24-Jie: Http://www.cnblogs.com/duolaameng25-Houbao: 123456789101112131415161718192021 1、只输出学生姓名catjw |sed‘s/[0-9 a-Z ://.\-]/ /g‘2、只输出每个学生的urlcatjw |sed‘s/.*:\/.//g‘|sed‘/.*:/d‘ 3、只输出个人博客里的学号catjw |sed‘s/-.*/ /g‘4、只输出个人博客中，两个字姓名的学生名catjw |sed‘s/[0-9 a-Z

Sed, linuxsed command Sed is an online editor that processes a row of content at a time. During processing, the currently processed rows are stored in the temporary buffer, called the pattern space. Then, the sed command is used to process the content in the buffer, send th

Sed command learning Notes 1. sed introduction sed is a non-interactive editor. It does not modify the file unless you use shell redirection to save the results. By default, all output rows are printed to the screen. Sed editor processes files (or inputs) row by row and send

Linux Command sed Sed is a lightweight linux stream editor used for row operations. It is mainly used for data selection, replacement, deletion, and addition. Permission: All Users Bit:/bin/sed Usage: sed [-nefr] [action] file Parameters: -N When-n is not added, both the dat

SedSED is a powerful text-processing toolBe able to use regular matching. Insert and delete changes to textWhen SED is processed, one line is processed at a time, and each time the current processing is stored in a temporary buffer. After processing the output buffer content to the screen, and then read the next line into the buffer, so repeatedly, until the end.1. command format and number of referencessed

Linux Environment: Ubuntu16.04SED commandHttp://www.cnblogs.com/ggjucheng/archive/2013/01/13/2856901.htmlhttp://blog.csdn.net/yiqingnian28/article/details/23133043Regular expressionshttp://blog.csdn.net/wzzfeitian/article/details/8842371Sed-help viewing the use of SED-N,--quiet,--silent suppress automatic printing of pattern space prevents the default output (display) of data in the template space, at which point only the content specified by the p

1.Sed Introduction stream Data editor Stream editer (SED), which is a row editor (corresponding to a full-screen editor) that processes one line at a time. The original file content is not edited by default (-I will modify the original file directly). When processing, it first stores the current conforming rows in the temporary buffer, and after processing, the contents of the buffer are sent to the screen

The SED command is used to process the text, and it is to process the text in line, while the SED handles the text in the pattern space, the text content in the output mode space after processing, so if you use the SED command to process a file, it will not change the conten

1. How SED worksSed (stream editor) is a stream editor, which is also a pipeline command that analyzes and edits standard input, including replacing, deleting, adding, selecting specific lines, and so on. The runtime, in the unit of behavior, processes only one row of content at a time, so it is also called the row editor. Sed can also be used in conjunction with

About SEDSed is a stream editor that reads one line of text at a time, puts it into the memory buffer (pattern space), and then uses the SED command to process the contents of the pattern space, which is output to the screen (stdout) By default after processing is complete. The next row of data is then processed.SED working characteristics Do not edit the source file directly, copy one copy to patt

There is an application firstgrep and SED mates replace strings in a fileCommand:Sed-i s/yyyy/xxxx/g ' grep yyyy-rl--include= "*.txt"./'function: Replace the YYYY string in all txt files in the current directory (including subdirectories) with the XXXX stringParameter explanation:Sed:-I indicates that the operation is a file, the "Wrapped grep command, which represents the result of the grep

Working principleSyntax formatWorking principleSED is a non-interactive stream editor. The so-called non-interactive, refers to the use of SED can only enter editing commands at the command line to edit the text, and then view the output on the screen, while the so-called flow editor refers to the SED each time only from the file (or input) read into a line, and

Sed command usage Sed streaming Editor/text filtering Stream Editor Based onPattern MatchingFilter/Modify text Syntax format: Sed 'edit directive 'file 1 file 2 All contents before and after modification are output. Sed-n 'edit directive 'file 1 file 2 Only the modified and

"$" symbol, and the last line is represented. For example: Sed-n ' 3p ' datafile Print only the third line Addresses are comma-delimited, the addresses that need to be processed are the ranges between the two lines, including these two lines. Scopes can be represented by numbers, regular expressions, or a combination of both. For example: Sed ' 2,5d ' datafile #删除第二到第五行

The basic syntax for sed substitution is: sed ' s/original string/replacement string/' Single quotation mark, s for replacement, three slash middle is a replacement style, Special characters need to be escaped with a backslash "\", but the single quote "'" is not escaped with a backslash "\", as long as the single quotation mark in the command is changed to

Original http://blog.chinaunix.net/uid-24426415-id-77244.html-------------------------------------------------------------------------------Beginner's entrythe SED tool is a non-interactive stream editor. By default, only the output is affected and the input is not changed . An SED is a unit of behavior when processing a document. Features are: Delete, find replace, add , insert, read from other files.In fa

You can use the SED command to replace a character string in a file like the search replacement function of a text processor. The SED command can also delete consecutive lines from the file. Because SED is a stream editor that uses the given file as the input and prints the

Sed is an online editor that handles a single line of content at a time. When processing, the currently processed rows are stored in a temporary buffer, known as pattern spaces, followed by the SED command to handle the contents of the buffer, and the contents of the buffer are sent to the screen after processing is complete. The next line is processed so that it

This original article belongs to "Linux greenhouse" blog, the blog address is http://roclinux.cn. The author of the article is rocrocket.In order to prevent the vicious reproduction of some websites, special in each article before adding this information, but also hope that readers understand. ===[Start of body]Next: "The stream art of the SED II"-linux command five-minute series 22Example five to insert so

. Requirements:[email protected] oldboy]# cat Oldboy.txtI am oldboy,my QQ is 1234567I am old,but am StrongWelcome to testRemove rows containing old without Oldboy in Oldboy.txtMethod One:[[Email protected] oldboy]# sed '/old[^boy]/d ' oldboy.txtI am oldboy,my QQ is 1234567Welcome to testMethod Two:[[Email protected] oldboy]# sed '/\I am oldboy,my QQ is 1234567Welcome to test"Replace a row with old without a