Deletion of line in vi editor,if particuar string(till the end of line.) matches

Question

In vi editor,If particular string matches,than delete those string till the end of line. means if line is

"I found a good solution for my bill printing task and it is working properly for me."

and string which is going to check in file is

"working properly"

than output will be

"I found a good solution for my bill printing task and it is "

I know How to delete last character of each line in file, then command :-- esc:%s/.$//g but i have to issue this command again and again.

Answer 1

只需将要匹配的字符串放在正则表达式的开头即可：

%s/working properly.*//

Answer 2

I believe using

%s/\\<working properly.*//g

would be appropriate. It would match only the complete word.

For example: it would match working properly but not networking properly .