Regular expression that doesn’t contain certain string [duplicate]

by

By the power of Google I found a blogpost from 2007 which gives the following regex that matches string which don’t contains a certain substring:

^((?!my string).)*$

It works as follows: it looks for zero or more (*) characters (.) which do not begin (?! – negative lookahead) your string and it stipulates that the entire string must be made up of such characters (by using the ^ and $ anchors). Or to put it an other way:

The entire string must be made up of characters which do not begin a given string, which means that the string doesn’t contain the given substring.

More Related Contents:

  1. Regular expression to match a line that doesn’t contain a word
  2. Regular expression for a string containing one word but not another
  3. How to negate the whole regex?
  4. How to exclude a specific string constant? [duplicate]
  5. Regex: match pattern as long as it’s not in the beginning
  6. Regex – Does not contain certain Characters
  7. How can I match a pattern as long as it’s not at the beginning with regex?
  8. Negate characters in Regular Expression [closed]
  9. Regex to get the words after matching string [duplicate]
  10. Regex: Matching by exclusion, without look-ahead – is it possible?
  11. Unix grep regex containing ‘x’ but not containing ‘y’
  12. Regular Expression to exclude set of Keywords
  13. How do I turn any regex into an complement of itself without complex hand editing?
  14. Regular expression for SSN and phone number [closed]
  15. How can I match “anything up until this sequence of characters” in a regular expression?
  16. Regex Last occurrence?
  17. Regular expression to match string starting with a specific word
  18. How to wisely combine shingles and edgeNgram to provide flexible full text search?
  19. Regular expression negative lookahead
  20. Is it possible to increment numbers using regex substitution?
  21. Regular expressions in a Bash case statement
  22. C++0x regex in GCC
  23. MongoDB, performance of query by regular expression on indexed fields
  24. Find numbers after specific text in a string with RegEx
  25. Email validation using regular expression in JSF 2 / PrimeFaces
  26. Regex get domain name from email
  27. Using sed and grep/egrep to search and replace
  28. Remove square brackets from a string vector
  29. Regular Expression – How to find a match within a match?
  30. Extracting text after last period in string [duplicate]

Leave a Comment