Bulk substitution of common commands in Linux vi text editing

VI This command is often used in Linux, today we will learn how to implement a string in the VI bulk replacement.

A. Total replacement in the document:

%s#abc#def#g
(Replaces all ABC in the file with Def)

For example, replace All "xwen.com" in a text file with "Xwen.net":

:%s#xwen.com#xwen.net#g

(such as the file has #, available/replace, such as:%s/xwen.com/xwen.net/g)

B. Local replacement in the file:

Replace All "ABC" in line 10 to 50 with "Def"

: 10,50s#abc#def#g
(If there is a # in the file, available/replace,:%s/abc/def/g)

If the above command adds C after G, the prompt is displayed to the user to confirm (conform) whether replacement is required before replacing.
Like what

:%S#XWEN.COM#XWEN.NET#GC