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

/
/
mg

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

re = /^.*(LIGNE|Espace|Maintien|point|Delta|ENTREE).*\n/m str = 'LIGNE Calque: "506" Espace: Espace objet Maintien = 371b3 de point, X=103620.0722 Y=49245.7502 Z= 0.0000 vers point, X=103620.0705 Y=49187.0630 Z= 0.0000 Longueur = 58.6872, Angle dans le plan XY = 270 Delta X = -0.0016, Delta Y = -58.6872, Delta Z = 0.0000 LIGNE Calque: "506" Espace: Espace objet Maintien = 371ad de point, X=103810.0724 Y=49255.0701 Z= 0.0000 vers point, X=103810.0705 Y=49187.0630 Z= 0.0000 Longueur = 68.0071, Angle dans le plan XY = 270 Delta X = -0.0019, Delta Y = -68.0071, Delta Z = 0.0000 LIGNE Calque: "506" Espace: Espace objet Maintien = 371af de point, X=104000.0727 Y=49264.3900 Z= 0.0000 Appuyez sur ENTREE pour continuer: vers point, X=104000.0705 Y=49187.0630 Z= 0.0000 Longueur = 77.3270, Angle dans le plan XY = 270 Delta X = -0.0022, Delta Y = -77.3270, Delta Z = 0.0000 LIGNE Calque: "506" Espace: Espace objet Maintien = 371a3 de point, X=104190.0722 Y=49246.6876 Z= 0.0000 vers point, X=104190.0705 Y=49187.0630 Z= 0.0000 Longueur = 59.6246, Angle dans le plan XY = 270 Delta X = -0.0017, Delta Y = -59.6246, Delta Z = 0.0000 LIGNE Calque: "506" Espace: Espace objet Maintien = 3718e de point, X=104360.0725 Y=49256.5929 Z= 0.0000 vers point, X=104360.0705 Y=49187.0630 Z= 0.0000 Longueur = 69.5299, Angle dans le plan XY = 270 Delta X = -0.0019, Delta Y = -69.5299, Delta Z = 0.0000 LIGNE Calque: "506" Espace: Espace objet Appuyez sur ENTREE pour continuer: Maintien = 37190 de point, X=104530.0727 Y=49264.3067 Z= 0.0000 vers point, X=104530.0705 Y=49187.0630 Z= 0.0000 Longueur = 77.2437, Angle dans le plan XY = 270 Delta X = -0.0022, Delta Y = -77.2437, Delta Z = 0.0000 LIGNE Calque: "506" Espace: Espace objet Maintien = 37192 de point, X=104700.0730 Y=49274.0157 Z= 0.0000 vers point, X=104700.0705 Y=49187.0630 Z= 0.0000 Longueur = 86.9527, Angle dans le plan XY = 270 Delta X = -0.0024, Delta Y = -86.9527, Delta Z = 0.0000 LIGNE Calque: "506" Espace: Espace objet Maintien = 37194 de point, X=104920.0731 Y=49278.0638 Z= 0.0000 vers point, X=104920.0705 Y=49187.0630 Z= 0.0000 Longueur = 91.0008, Angle dans le plan XY = 270 Delta X = -0.0025, Delta Y = -91.0008, Delta Z = 0.0000 Appuyez sur ENTREE pour continuer: LIGNE Calque: "506" Espace: Espace objet Maintien = 37196 de point, X=105140.0731 Y=49278.0638 Z= 0.0000 vers point, X=105140.0705 Y=49187.0630 Z= 0.0000 Longueur = 91.0008, Angle dans le plan XY = 270 Delta X = -0.0025, Delta Y = -91.0008, Delta Z = 0.0000 LIGNE Calque: "506" Espace: Espace objet Maintien = 37185 de point, X=105428.0731 Y=49278.0638 Z= 0.0000 vers point, X=105428.0705 Y=49187.0630 Z= 0.0000 Longueur = 91.0008, Angle dans le plan XY = 270 Delta X = -0.0025, Delta Y = -91.0008, Delta Z = 0.0000 LIGNE Calque: "506" Espace: Espace objet Maintien = 37187 de point, X=105728.0731 Y=49278.0638 Z= 0.0000 vers point, X=105728.0705 Y=49187.0630 Z= 0.0000 Longueur = 91.0008, Angle dans le plan XY = 270 Appuyez sur ENTREE pour continuer: Delta X = -0.0025, Delta Y = -91.0008, Delta Z = 0.0000 ' subst = '' result = str.gsub(re, subst) # Print the result of the substitution puts 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 Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html