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

/
/
g

Test String

Code Generator

Language

Generated Code

use strict; my $str = 'src/profile/Admin.profile src/profile/Chatter External User.profile src/profile/Chatter Free User.profile src/profile/Chatter Moderator User.profile src/profile/Company Communities User.profile src/profile/ContractManager.profile src/profile/Guest License User.profile src/profile/High Volume Customer Portal User.profile src/profile/Integratie.profile src/profile/MarketingProfile.profile src/profile/OWS.profile src/profile/Photos Profile.profile src/profile/PostNL - Audit.profile src/profile/PostNL - Business gebruiker.profile src/profile/PostNL - Controlroom C%26S Aanmaker - CC.profile src/profile/PostNL - Controlroom C%26S Analist - CC.profile src/profile/PostNL - Controlroom C%26S Behandelaar - CC.profile src/profile/PostNL - DUB - CC.profile src/profile/PostNL - Directeur V%26B - CC.profile src/profile/PostNL - IT Servicedesk - CC.profile src/profile/PostNL - K%26K behandelaar.profile src/profile/PostNL - Klachten Behandelaar - CC.profile src/profile/PostNL - Klachten Inzage - CC.profile src/profile/PostNL - Netwerk Behandelaar.profile src/profile/PostNL - OBSB - CC.profile src/profile/PostNL - OBSB Beheerder - CC.profile src/profile/PostNL - OR Administrator - CC.profile src/profile/PostNL - Postbezorger Community - CC.profile src/profile/PostNL - Postbezorger Community Chatter - CC.profile src/profile/PostNL - Postbezorger Community Chauffeur - CC.profile src/profile/PostNL - Postbezorger Community Extern - CC.profile src/profile/PostNL - Postbezorger Community PB ZW - CC.profile src/profile/PostNL - Postbezorger Community Voorbereiden - CC.profile src/profile/PostNL - Procesmanager Bezorgen - CC.profile src/profile/PostNL - Procesmanager Voorbereiden - CC.profile src/profile/PostNL - Regiomanagers - CC.profile src/profile/PostNL - Service Centrum Medewerker.profile src/profile/PostNL - Teamleider - CC.profile src/profile/PostNL - Teamleider Voorbereiden - CC.profile src/profile/PostNL - Werkorder behandelaar - CC.profile src/profile/ReadOnly.profile src/profile/SolutionManager.profile src/profile/Standard.profile'; my $regex = qr/(?<=\/)[^\/]*(?=\.)/p; if ( $str =~ /$regex/g ) { print "Whole match is ${^MATCH} and its start/end positions can be obtained via \$-[0] and \$+[0]\n"; # print "Capture Group 1 is $1 and its start/end positions can be obtained via \$-[1] and \$+[1]\n"; # print "Capture Group 2 is $2 ... and so on\n"; } # ${^POSTMATCH} and ${^PREMATCH} are also available with the use of '/p' # Named capture groups can be called via $+{name}

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 Perl, please visit: http://perldoc.perl.org/perlre.html