Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
i

Test String

Code Generator

Language

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?i)\n\s\sname:\sI_LOGON_AUTH_FAILED\n[\s\S]*?\s\ssession\n[\s\S]*?\s\s\s\sremoteAddress:\s(?<ipaddress>.*?):[0-9]*\n[\s\S]*?\s\sauthentication\n[\s\S]*?\s\s\s\suserName:\s(?<username>.*)" Local $sString = "event" & @CRLF & _ " time: 2021-11-23 22:42:59.164039 +0300" & @CRLF & _ " app: BvSshServer 8.49" & @CRLF & _ " name: I_LOGON_AUTH_FAILED" & @CRLF & _ " desc: User authentication failed." & @CRLF & _ " session" & @CRLF & _ " id: 1015" & @CRLF & _ " service: SSH" & @CRLF & _ " remoteAddress: 192.168.0.103:41104" & @CRLF & _ " authentication" & @CRLF & _ " attemptNr: 1" & @CRLF & _ " serialize: completion" & @CRLF & _ " userName: userTest" & @CRLF & _ " method: keyboard-interactive" & @CRLF & _ " submethod: Password" & @CRLF & _ " windowsAccount: DESKTOP-FN3LTFE\paprikar" & @CRLF & _ " parameters" & @CRLF & _ " failureReason: BadCredentials" & @CRLF & _ " help" & @CRLF & _ " message: Unknown user name or incorrect password." & @CRLF & _ "" Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYFULLMATCH) ; Present the entire match result _ArrayDisplay($aArray, "Result")

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm