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

r"
"
gmu

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

re = /([0-9]{1,2}:[0-9]{2}) (AM|PM)(\n)(.*)\n/m str = '5:47 PM [EASY] Panzer Pebble joined the server 5:47 PM Trigger executed raw command message "76561199679367168" Welcome to EASY Company | Level 50+! If you have any issues, please report it by typing !admin (reason) in chat. Come check us out at discord.gg/easycompany. You MUST be level 50 or higher to play on this server and level 75 or higher to play commander. 5:47 PM Player [EASY] Panzer Pebble switched from None to Allies 5:47 PM MESSAGE: player [[EASY] Panzer Pebble(76561199679367168)], content [We are trying to populate the server which means special rules apply. 5:56 PM MESSAGE: player [[EASY] Panzer Pebble(76561199679367168)], content [Vote for the nextmap: 5:59 PM MESSAGE: player [[EASY] Panzer Pebble(76561199679367168)], content [We are trying to populate the server which means special rules apply. 5:59 PM MESSAGE: player [[EASY] Panzer Pebble(76561199679367168)], content [This server is under level thresholds control. 6:18 PM Player [EASY] Panzer Pebble switched from None to Axis 7:28 PM MESSAGE: player [[EASY] Panzer Pebble(76561199679367168)], content [Vote for the nextmap: 7:48 PM MASTER CHIEF (Axis) killed [EASY] Panzer Pebble (Allies) with GEWEHR 43 7:49 PM Yustitsiya (Axis) killed [EASY] Panzer Pebble (Allies) with MP40 9:00 PM MESSAGE: player [[EASY] Panzer Pebble(76561199679367168)], content [Vote for the nextmap:' subst = '\\g<1>\\g<2> \\g<4>\\n' 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