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

/
/
is

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 = "(?is)(?:cmdlet|get-alias)|(?:help.+?(?:cmdlet|get-alias))" Local $sString = "PS M:\> get-help" & @CRLF & _ "TOPIC" & @CRLF & _ " Get-Help" & @CRLF & _ "" & @CRLF & _ "SHORT DESCRIPTION" & @CRLF & _ " Displays help about Windows PowerShell cmdlets and concepts." & @CRLF & _ "" & @CRLF & _ "LONG DESCRIPTION" & @CRLF & _ "" & @CRLF & _ "SYNTAX" & @CRLF & _ " get-help {<CmdletName> | <TopicName>}" & @CRLF & _ " help {<CmdletName> | <TopicName>}" & @CRLF & _ " <CmdletName> -?" & @CRLF & _ "" & @CRLF & _ " "Get-help" and "-?" display help on one page." & @CRLF & _ " "Help" displays help on multiple pages." & @CRLF & _ "" & @CRLF & _ " Examples:" & @CRLF & _ " get-help get-process : Displays help about the Get-Process cmdlet." & @CRLF & _ " get-help about_signing : Displays help about signing scripts." & @CRLF & _ " help where-object : Displays help about the Where-Object cmdlet." & @CRLF & _ " help about_foreach : Displays help about foreach loops in PowerShell." & @CRLF & _ " set-service -? : Displays help about the Set-Service cmdlet." & @CRLF & _ "" & @CRLF & _ " You can use wildcard characters in the help commands (not with -?)." & @CRLF & _ " If multiple help topics match, PowerShell displays a list of matching" & @CRLF & _ " topics. If only one help topic matches, PowerShell displays the topic." & @CRLF & _ "" & @CRLF & _ " Examples:" & @CRLF & _ " get-help * : Displays all help topics." & @CRLF & _ " get-help get-* : Displays topics that begin with get-." & @CRLF & _ " help *object* : Displays topics with "object" in the name." & @CRLF & _ " get-help about* : Displays all conceptual topics." & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ " For information about wildcards, type:" & @CRLF & _ " get-help about_wildcard" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "REMARKS" & @CRLF & _ " To learn about Windows PowerShell, read the following help topics:" & @CRLF & _ " get-command : Gets information about cmdlets from the cmdlet code." & @CRLF & _ " get-member : Gets the properties and methods of an object." & @CRLF & _ " where-object : Filters object properties." & @CRLF & _ " about_object : Explains the use of objects in Windows PowerShell." & @CRLF & _ " about_remote : Tells how to run commands on remote computers." & @CRLF & _ "" & @CRLF & _ " Conceptual help files are named "about_<topic>", such as:" & @CRLF & _ " about_regular_expression." & @CRLF & _ "" & @CRLF & _ " The names of conceptual help files must be entered in English" & @CRLF & _ " even on non-English versions of Windows PowerShell." & @CRLF & _ "" & @CRLF & _ " The help commands also display the aliases of the cmdlets. These" & @CRLF & _ " are alternate names or nicknames that are often easier to type." & @CRLF & _ " For example, the alias for the Invoke-Command cmdlet is "remote"." & @CRLF & _ "" & @CRLF & _ " To get the aliases, type:" & @CRLF & _ "" & @CRLF & _ " get-alias" & @CRLF & _ "PS M:\>" 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