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To install apache2.4 in Windows 7, we first need to download the apache2.4 installation program. Here we download the software from the apache official website http://httpd.apache.org/download.cgi . First, let's see how to download apache2....

The split command, as a member of the pipeline command family, is used to split a large file into many small files. Sometimes, in order to improve readability, it is necessary to split a file into smaller fragments. Let's take a look at the...

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...

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...

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...

Scp copies files between two hosts over the network, and the data is encrypted during transmission. Its underlying layer uses ssh for data transmission. And it has the same authentication mechanism and the same security level as ssh. When u...

Compared with at , which executes a command only once, crontab, which we are going to talk about in this article, executes the set commands in a loop. Similarly, the use of crontab requires the support of the crond service. The service is s...

This article mainly involves a knowledge point, which is the atd service. Similar to this service is the crond service. The functions of these two services can be similar to the two functional functions of javascript. Those who have learned...

Usually, in Linux system we need to frequently delete some temporary files or junk files. If we delete them one by one manually, it will be quite troublesome. I have also been learning shell script programming recently, so I tried to write...

In shell script programming, predicates are often used. There are two ways to use predicates, one is to use test, and the other is to use []. Let's take a look at how to use these two methods through two simple examples. Example 1 # test –...

? is a special variable. This variable represents the return value of the previous command. That is to say, when we run certain commands, these commands will return a code after running. Generally, if the command is successfully run, the re...

In Linux, the best editor should be vim. However, the complex commands behind vim's powerful functions also make us daunted. Of course, these commands do not need to be memorized by rote. As long as you practice using vim more, you can reme...

As the most commonly used web server, Apache can be used in most computer operating systems. As a free and open source Unix-like operating system, Linux and Apache are a golden pair. This article will introduce the installation and use of A...