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

r"
"
gim

Test String

Code Generator

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?im)^\w+(?=\s+OBJECT-TYPE)" Local $sString = "STEELHEAD-MIB DEFINITIONS ::= BEGIN" & @CRLF & _ "" & @CRLF & _ "IMPORTS" & @CRLF & _ " OBJECT-TYPE, MODULE-IDENTITY, NOTIFICATION-TYPE, Unsigned32," & @CRLF & _ " TimeTicks, IpAddress, Counter32, Counter64 FROM SNMPv2-SMI" & @CRLF & _ " DateAndTime FROM SNMPv2-TC" & @CRLF & _ " products FROM RBT-MIB;" & @CRLF & _ "" & @CRLF & _ "steelhead MODULE-IDENTITY" & @CRLF & _ " LAST-UPDATED "201401070000Z"" & @CRLF & _ " ORGANIZATION "Riverbed Technology, Inc."" & @CRLF & _ " CONTACT-INFO" & @CRLF & _ " " Riverbed Technical Support" & @CRLF & _ " support@riverbed.com"" & @CRLF & _ " DESCRIPTION "Steelhead MIB"" & @CRLF & _ " REVISION "201401070000Z"" & @CRLF & _ " DESCRIPTION "Connection forwarding cluster incompatible trap"" & @CRLF & _ " REVISION "201301250000Z"" & @CRLF & _ " DESCRIPTION "Corrections in descriptions of some traps"" & @CRLF & _ " REVISION "201210170000Z"" & @CRLF & _ " DESCRIPTION "Added trap for CF Peer IPv6 incompatible alarm"" & @CRLF & _ " REVISION "201202030000Z"" & @CRLF & _ " DESCRIPTION "Updated for 7.0.1"" & @CRLF & _ " ::= { products 1 }" & @CRLF & _ "" & @CRLF & _ "system OBJECT IDENTIFIER" & @CRLF & _ " ::= { steelhead 1 }" & @CRLF & _ "" & @CRLF & _ "status OBJECT IDENTIFIER" & @CRLF & _ " ::= { steelhead 2 }" & @CRLF & _ "" & @CRLF & _ "config OBJECT IDENTIFIER" & @CRLF & _ " ::= { steelhead 3 }" & @CRLF & _ "" & @CRLF & _ "alarms OBJECT IDENTIFIER" & @CRLF & _ " ::= { steelhead 4 }" & @CRLF & _ "" & @CRLF & _ "statistics OBJECT IDENTIFIER" & @CRLF & _ " ::= { steelhead 5 }" & @CRLF & _ "" & @CRLF & _ "--" & @CRLF & _ "--" & @CRLF & _ "-- SYSTEM" & @CRLF & _ "--" & @CRLF & _ "--" & @CRLF & _ "" & @CRLF & _ "model OBJECT-TYPE" & @CRLF & _ " SYNTAX OCTET STRING" & @CRLF & _ " MAX-ACCESS read-only" & @CRLF & _ " STATUS current" & @CRLF & _ " DESCRIPTION" & @CRLF & _ " "Appliance model"" & @CRLF & _ " ::= { system 1 }" & @CRLF & _ "" & @CRLF & _ "serialNumber OBJECT-TYPE" & @CRLF & _ " SYNTAX OCTET STRING" & @CRLF & _ " MAX-ACCESS read-only" & @CRLF & _ " STATUS current" & @CRLF & _ " DESCRIPTION" & @CRLF & _ " "Appliance serial number"" & @CRLF & _ " ::= { system 2 }" & @CRLF & _ "" & @CRLF & _ "systemVersion OBJECT-TYPE" & @CRLF & _ " SYNTAX OCTET STRING" & @CRLF & _ " MAX-ACCESS read-only" & @CRLF & _ " STATUS current" & @CRLF & _ " DESCRIPTION" & @CRLF & _ " "System software version string"" & @CRLF & _ " ::= { system 3 }" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "--" & @CRLF & _ "--" & @CRLF & _ "-- STATUS" & @CRLF & _ "--" & @CRLF & _ "--" & @CRLF & _ "" & @CRLF & _ "systemClock OBJECT-TYPE" & @CRLF & _ " SYNTAX DateAndTime" & @CRLF & _ " MAX-ACCESS read-only" & @CRLF & _ " STATUS current" & @CRLF & _ " DESCRIPTION" & @CRLF & _ " "System clock time"" & @CRLF & _ " ::= { status 1 }" & @CRLF & _ "" & @CRLF & _ "health OBJECT-TYPE" & @CRLF & _ " SYNTAX OCTET STRING" & @CRLF & _ " MAX-ACCESS read-only" & @CRLF & _ " STATUS current" & @CRLF & _ " DESCRIPTION" & @CRLF & _ " "Current health of the system. The value is one amongst" & @CRLF & _ " Healthy, Admission Control, Degraded, Critical"" & @CRLF & _ " ::= { status 2 }" & @CRLF & _ "" & @CRLF & _ "serviceStatus OBJECT-TYPE" & @CRLF & _ " SYNTAX OCTET STRING" & @CRLF & _ " MAX-ACCESS read-only" & @CRLF & _ " STATUS current" & @CRLF & _ " DESCRIPTION" & @CRLF & _ " "Current status of the optimization service"" & @CRLF & _ " ::= { status 3 }" Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH) Local $aFullArray[0] For $i = 0 To UBound($aArray) -1 _ArrayConcatenate($aFullArray, $aArray[$i]) Next $aArray = $aFullArray ; Present the entire match result _ArrayDisplay($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