How to search man pages?

To search man pages, you can use the following commands:

Using man -k: This command searches the short descriptions and manual page names for a keyword.
```
man -k keyword
```
For example, to search for pages related to "copy":
```
man -k copy
```
Using apropos: This command is similar to man -k and can also be used to search for keywords in man page descriptions.
```
apropos keyword
```
Using whatis: This command provides a brief description of a command or function.
```
whatis command_name
```
For example:
```
whatis ls
```

These commands help you quickly find relevant man pages based on keywords or command names.