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# Using Regular Expressions in Text Searches

Regular expressions can be used to search for some unspecified or even invisible characters.

Searching with regular expressions is different from searching with wildcards. LibreOffice Writer only supports searching with regular expressions.

You can use regular expressions when you find and replace text in a document. For example, "s.n" finds "sun" and "son".

1. 편집 - 찾기 및 바꾸기를 선택합니다.

2. 대화 상자를 확장하려면 옵션 표시 자세히를 클릭합니다.

3. 정규식 확인란을 선택합니다.

4. In the Find box, type the search term and the regular expression(s) that you want to use in your search.

5. Click Find Next or Find All.

## 정규식의 예

1. The regular expression for a single character is a period (.).

2. The regular expression for zero or more occurrences of the previous character is an asterisk. For example: "123*" finds "12" "123", and "1233".

3. The regular expression combination to search for zero or more occurrences of any character is a period and asterisk (.*).

4. The regular expression for the end of a paragraph is a dollar sign ($). The regular expression character combination for the start of a paragraph is a caret and a period (^.).

5. The regular expression for a tab character is \t.

정규식을 사용하는 검색은 한 단락 내에서만 작동합니다. 두 개 이상의 단락에서 정규식을 사용하여 검색하려면 각 단락에서 개별 검색을 수행합니다.

관련 주제

정규식 목록

Using Wildcards in Formulas