Linux's method of copying the contents of a file to another file

In this issue, the editor will bring you the method of copying the contents of the file to another file by linux. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.

Problem description:

For example, the file content of 11 is as follows:

Hello

22 the contents of the document are:

World

Copy the contents of the 22 file to the end of the 11 file, and the effect of the 11 file is:

Helloworld

Solution:

Cat 22 > > 11

> > means to add.

> means redirect, which will overwrite the original content

Tips:

Clear the contents of the a.txt file and make the file size 0 without deleting the file:

Cat / dev/null > a.txt above is the way for the editor to copy the contents of the file to another file for the linux shared by you. If you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.