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
Processing...

Test String

Code Generator

Language

Generated Code

const regex = /\:\d{2}\s(?<Severity>\w+)\s\(\d+-\d+\)\s\<(?<Type>\w+)\>\s\[\w+\]\s(?<Status>\w+)\:\w+\:(?<Server>[^\,]*)\,(?:[^\;]*[\;]){2}DNS\:(?<DNS>[^\;]*)\;IP\:(?<IP>[^\;]*)\;(?:[^\\]*[\\])(?<UN>\w+)\;\w+\:(?<USERDN>[^\,]*)/gm; // Alternative syntax using RegExp constructor // const regex = new RegExp('\\:\\d{2}\\s(?<Severity>\\w+)\\s\\(\\d+-\\d+\\)\\s\\<(?<Type>\\w+)\\>\\s\\[\\w+\\]\\s(?<Status>\\w+)\\:\\w+\\:(?<Server>[^\\,]*)\\,(?:[^\\;]*[\\;]){2}DNS\\:(?<DNS>[^\\;]*)\\;IP\\:(?<IP>[^\\;]*)\\;(?:[^\\\\]*[\\\\])(?<UN>\\w+)\\;\\w+\\:(?<USERDN>[^\\,]*)', 'gm') const str = `2019-01-11T07:41:10.400-06:00 INFO (4440-4444) <DesktopControlJMS> [Audit] PENDING:Server:cn=c111111f-0111-4111-a111-cc01111111,ou=servers,dc=vdi,dc=vm,dc=int;Pool:cn=gvlcsnav4,ou=servergroups,dc=vdi,dc=vm,dc=int;DNS:gvlcsnav4025.ad.nitro.com;IP:10.111.111.111;IP6:null;USER:LP\\un12802;USERDN:cn=s-2-2-22-59222222-343222254-204222229-4722223,cn=foreignsecurityprincipals,dc=vdi,dc=vm,dc=int;BROKERUSERSID:s-2-2-22-59222222-343222254-204222229-4722223; 2019-01-11T07:46:06.049-06:00 INFO (4444-1300) <DesktopControlJMS> [Audit] STARTUP:Server:cn=eeeeed6-eeeb2-eee3-beed-56eeeeeeeb77,ou=servers,dc=vdi,dc=vm,dc=int;Pool:cn=gvclsnav2,ou=servergroups,dc=vdi,dc=vm,dc=int;DNS:gvclsnav2069.ad.nitro.com;IP:10.990.999.1;IP6:null; 2019-01-11T07:36:03.140-06:00 INFO (1444-0622) <MachineControler> [Audit] PENDING:Server:cn=7677778c-d777-4777-a777-587777772d,ou=servers,dc=vdi,dc=vm,dc=int;Pool:cn=gvsview01,ou=servergroups,dc=vdi,dc=vm,dc=int;DNS:gvsview030276.ad.nitro.com;IP:10.122.222.221;IP6:null;USER:LP\\UNVA33E;USERDN:cn=s-2-2-22-5999990-343999999-204999989-469993,cn=foreignsecurityprincipals,dc=vdi,dc=vm,dc=int;BROKERUSERSID:s-2-2-22-5999990-343999999-204999989-469993;`; // Reset `lastIndex` if this regex is defined globally // regex.lastIndex = 0; let m; while ((m = regex.exec(str)) !== null) { // This is necessary to avoid infinite loops with zero-width matches if (m.index === regex.lastIndex) { regex.lastIndex++; } // The result can be accessed through the `m`-variable. m.forEach((match, groupIndex) => { console.log(`Found match, group ${groupIndex}: ${match}`); }); }

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 JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions