Regular expression to match a line that doesn't contain a word.

Utpal Vishwas 466 29 Aug 2023

Utpal Vishwas

Student

I am Utpal Vishwas from Uttar Pradesh. Have completed my B. Tech. course from MNNIT campus Prayagraj in 2022. I have good knowledge of computer networking.

1 Answers

Aryan Kumar 04 Sep 2023

Sure, here is a regular expression to match a line that doesn't contain a word:

^[^\w\s]+$

The ^ metacharacter matches the beginning of the line, and the $ metacharacter matches the end of the line. The \w metacharacter matches any word character, which includes letters, numbers, and the underscore character. The \s metacharacter matches any whitespace character.

So, this regex pattern will match any line that does not contain any word characters or whitespace characters.

For example, the following lines would be matched by this regex pattern:

--

12345

.

The following lines would not be matched by this regex pattern:

hello

world

this is a sentence

forum

Regular expression to match a line that doesn't contain a word.

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