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

`
`
gm

Test String

Code Generator

Language

Generated Code

use strict; my $str = 'hxxp://securedownload2.duckdns.org:7373/docs/ @JAMESWT_MHT abc://www.hhghg.ghgh.jkjkjk.jkjkj.jkjk #LokiBot @ hxxp://xupfile.duckdns.org:1133/$59,200.exe https://www.reverse.it/sample/529b10d3faaa143c074d0f25ee75c8e9bad7f5982ead482d6c0c19a39d207b68?environmentId=100 … 1.2.3.4 www.virustotal.com C2: hta.duckdns.org:7373/excel/fre.php http://www.virustotal.com/en/file/a94f7db23f64985f22a4250886db0d67e3cc1fbf59ef3d1bf9ffd28d3357d3f7/analysis/1511168707/ … Downloads from hxxp://172.106.75.131/temp/amazingdoz.exe d https://www.virustotal.com/#/url/2512afa822b8cadbe9e2fa0ecda5ad55d6024b0694fecf265282a63ef88058cf/detection … hxxp://www.dk-fyn.dk/ebgate/ri.php hxxp://www.fourthtour.it/rus/tour/php.scr hxxp://www.foxydance.cz/repository/ri.php hxxp://www.sabineclaire.com/girasoli/ri.php,1212 sdfsdfsdsdfsdf https://www.reverse.it/sample/b57bd0dec0873bea8e47a16e1da41aafa817ae11d536c90cb7aec6d6686b686e?environmentId=100 … hxxp://www.sabineclaire.com/girasoli/ri.php sdf.bom fasdkj adsflk jasldk fjalskd fjslaskjdf lkaj dsfl'; my $regex = qr`((2[0-4]\d|25[0-5]|1\d\d|0\d\d|0\d|\d\d|\d)[\.]){3}(2[0-4]\d|25[0-5]|1\d\d|0\d\d|0\d|\d\d|\d)|(((\w*)://(www)*)\.*((\w*-*\w*)\.)*(\w*)(:\d+)*/*#*(/*)(\w+/)*(\w*\$*\w*\,*\w*\?*=*)*\.*(\w*))|((www\.)*(\w+-*)(\.\w+)+)(:\d+)*/*#*(/*)(\w+/)*(\w*\$*\w*\,*\w*\?*=*)*\.*(\w*)`mp; 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