Reference: How to follow links in Linux mans pages?
Objective
When you use man to view command help, some of the text is underlined below. The feeling is a link, but not open. So is it a link anyway?
This on-line non-on-line
View Man man, inside the explanation of man is on-line reference manuals, that is, online reference manual, since the online reference manual, it should be supported links ah. In fact, this on-line is not a on-line of our conventional understanding. The "on-line" here means "on the computer" (as opposed to "on paper"), not "on the Internet".
Mans pages History
Man Pages,man manual page. Can be traced back to the first version of UNIX. Although hypertext (hypertext) has been invented, it is still in its infancy. Network technology has been 20 years since the invention. Man pages is actually a real printed book, usually a page about a command. That's why it's called man pages. Later, the format for the man pages changed, but most pages were not really designed for hypertext, and the default man program did not support hyper-text.
Man command
The man command is actually a text formatter, and he doesn't even have the ability to display it. Someone might say, you're blind! Does the man command not display content on the screen? That's true, but the job of displaying content is not man-made. The man formats the information stored in the man page file and sends the formatted data to another program (usually less) to display the content on the screen with another program.
Finally answer the previous question
Man command, some text below underlined, this is not a link?
A: No, the underscore is just to emphasize.
Is it possible to convert a man command into a link with an underlined part?
A: There really is, man2html, specifically how to use not studied
"Question" Man command open the manual on how to expand the link?