How to replace selected lines or specify text within several lines in vim

Question

Checked the vim command list on the Internet, only the command to replace the current line with full text or replace with full text

Answer 1

:'<,'>s/替换项/替换为/g

The following command replaces all strings idiots with managers in this article:

:1,$s/idiots/manages/g

Usually we use % in the command to refer to the entire file as the replacement range:

:%s/search/replace/g

The following command specifies replacement only between lines 5 to 15:

:5,15s/dog/cat/g

The following command specifies replacement only between the current line and the end of the file:

:.,$s/dog/cat/g

The following command specifies replacement only within the next 9 lines:

:.,.+8s/dog/cat/g

You can also use specific characters as the replacement range. For example, replace all equal signs (=) in the SQL statement from FROM to the semicolon with inequality signs (<>):

:/FROM/,/;/s/=/<>/g

In visual mode, first select the replacement range, and then enter: to enter command mode, you can use the s command to replace text in the selected range.
- VIM study notes Substitute (may require Anti-GFW)

Answer 2

Control+v enters visual block mode, press hjkl to select the content to be operated, d means cut, p means paste

Oh, maybe I misunderstood the question. .