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The general practical operation of the Linux server firewall includes the termination of the general server firewall, the opening and setting of the port number, and the setting of the port number entry and exit. Because the firewall software used in different Linux desktop operating systems is different, I also comb this text document here to help you quickly query. The server firewall is relatively. With firewall software as the database index, the Linux desktop operating system using firewall software is shown in the following table: firewall cmd, applicable to centos7. iptables, For cento
There are many specific examples in the customized table, and many beginners can't understand it because of the number of symbols, but it is really very powerful, so everyone writes a series and expects everyone to fully understand it! There is too much content. Considering everyone's self-study experience, we will divide it into 2~3 articles. This article will talk about the file format basically related to the label value! What is it? First, let's show you what the custom cell format is, so as to lay the foundation for your later learning and training! Custom cell format: it is only a file format and a layer of jacket in the table, and the real content in the table is always unchanged, only the visual effect has changed. Yes
The actual operation of batch update of mybatis. We know that the insertion and deletion of mybatis can be applied to the actual operation of batch commands, but the same is true for update. The coding is as follows: update SYSTEM_EXPERT_LIBRARY SET USER_CODE = #, EXPERT_NAME = #, EXPERT_SEX = #, EXPERT_MAIL = #, EXPERT_ADDRESS = #, EXPERT_CARD =...
In daily life, there are many scanner documents. Although the reading article can be given, the above text is difficult to write. Is there any way to extract the above text for everyone to write? Some ways are to install an OCR character recognition software on the computer, which can quickly obtain the problem of text documents and convert it into a word or TXT editable form. How to achieve this? The article details the way to complete, looking forward to some help to friends in need! Strongly recommended application: lightning OCR image and text recognition software. Mobile phone software shows that this is also a professional image recognition technology
In people's smart phones, there are many kinds of folder names, each of which occupies a lot of running memory on the phone. If you want to delete it, but do not know what the name of the folder means, you are afraid of deleting the secret file carelessly, which is really a headache. Don't worry, today I will teach you the meaning of this folder name, so that you can understand what folder name can be deleted at one time. 1: The folder name that can be removed. 1: The word "cache file" means "cache file", that is, the cache left by our mobile phones can be deleted safely, which not only does not easily harm the regular applications of computers, but also
In the process of making engineering drawings with Lu Junhua CAD mobile software, sometimes CAD reports must be inserted. What should I do if I want to insert EXCEL into CAD? In fact, it is not very difficult. Let's take a look at Lu Junhua's CAD table inserting and editing methods in the next CAD example tutorial. Operation process of inserting CAD report: first select and copy the table to be inserted into Lu Junhua CAD in Excel, then open Lu Junhua CAD mobile phone software, find it in the toolbar, click Write Paste Unique (S). As shown in the figure below: execute the command