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The paste command is a member of the Linux pipe command family. This command merges each file column by column and outputs it. Before formally introducing paste, let's prepare two files /tmp/paste1 and /tmp/paste2. # cat /tmp/paste1 onmpw j...

This article introduces the character conversion command tr. Tr is a pipeline command that can be used to delete text in a message or replace text information! tr [options] ... SET1 [SET2] The commonly used options of tr are as follows -d d...

This article introduces the uniq command, which is also a member of the Linux pipe command family. Its main function is to remove duplicates. Before introducing the uniq command, let's create a new file /tmp/uniq.txt that will be used in th...

The tee command is a member of the Linux pipe command family. Its function is to redirect data to a file. We know that data redirection can be done directly using . Yes, can redirect data streams. But it cannot redirect data to standard out...

The sort command is a commonly used sorting command in Linux , and it is also a pipeline command . In order to ensure that future instances can get the sorting results we want, we need to set the following # export LC_ALL=C Okay, next we wi...

The wc command is a commonly used command in Linux system, and it is also a member of the pipeline command family. wc is a statistical command, which is very simple to use and does not have as many options as sort. Let's take a look at the...

This article follows up on Linux extraction command grep (I) and Linux extraction command grep (II) and continues to introduce the options of the grep command and its usage. Option 3 -i is case insensitive to the search string $ grep Mail /...

This article follows up on Linux extraction command grep (Part 1) and continues to introduce the options and usage of the grep command. Option 2 In this group, we mainly introduce options to control grep output information. -m stops outputt...

Grep is a frequently used command in Linux. Like the cut command, it is a member of the pipeline command. Its function is to analyze a line of data and extract the data we want from the analyzed data. It is equivalent to a search function....

The cut command belongs to the pipeline command family. Cut is an extraction command that extracts the data we want after analyzing a piece of data. Generally, information is extracted line by line. The meaning of cut is to cut. Yes, the pu...

What is a pipeline command? Judging from the name, it should be divided into 'pipeline' and 'command'. pipeline Let's look at pipelines first. This is how I understand pipelines. Pipelines are used to establish a connection between two comm...

This article shares a Linux application case with you. The requirements are as follows: /a Contents under the directory /a/login1.txt /a/login2.txt /a/login3.txt /a/login4.txt /a/b/login5.txt /a/b/login6.txt We find all the file names start...

NodeJs can automatically restart after modifying the code, saving us the trouble of ctr+c and then using node. But in terms of time, if the project is already online and running normally, and there are not many modifications, then we can do...

When compiling a PHP module, errors may occur if there are any omissions. Here is a summary of the errors that occurred during the compilation of the PHP module curl. curl can be said to be a commonly used module in PHP. However, in many ca...

In the article "Building SVN Service Project and Synchronizing Code to Project Directory" , we briefly introduced how to use SVN to synchronize submitted code to the working directory. But there is a problem here, that is, the SVN service a...