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This article introduces the relevant knowledge of "how to use ctags to find the source code under the Linux system". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

There are so many files that we can't locate the implementation of a function or the location of a macro definition. Obviously, it is very disadvantageous to the reading of the source code and personal learning. How I wish there was a software that could input commands to accurately locate the location of the function. Yes, there is a tool: ctags, which needs to be used in conjunction with the vim editor to make it easier to read the source code.

What is ctags?

Ctags (Generate tag files for source code) is a convenient tool for code reading under vim. Although ctags can also support other editors, only VIM is officially supported. And Ctags is installed by default in VIM, which makes it easy for programmers to browse the source code.

Ctags update address: http://ctags.sourceforge.net/, is the official website of ctags, where you can download the latest content about ctags.

What content can ctags locate?

1) Macro defined with # define

2) the value of enumerated variables

3) definition, prototype and declaration of functions

4) namespace (namespace)

5) Type definition (typedefs)

6) variables (including definitions and declarations)

7) classes (class), structures (struct), enumerated types (enum) and union

8) member variables or functions in classes, structures, and unions

two。 Configure your environment to meet ctags:

Install ctags, or if it is RedHat, install it directly using the yum command:

Generate the tags file in the specified source location, and we add a lot of parameters to improve the function of ctags (to demonstrate its powerful function, I use it to generate the tags file of the linux source code):

Then when we look at the tags content, we can find that tags is the index of each element in the linux kernel code, which is why ctags combined with vim can quickly locate (the query is located through the content of this file):

This is the end of the content of "how to find the source code using ctags under the Linux system". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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