Regular Expressions 101

Save & Share

  • Regex Version: ver. 5
  • Update Regex
    ctrl+⇧+s
  • Save new Regex
    ctrl+s
  • Add to Community Library

Flavor

  • PCRE2 (PHP >=7.3)
  • PCRE (PHP <7.3)
  • ECMAScript (JavaScript)
  • Python
  • Golang
  • Java 8
  • .NET 7.0 (C#)
  • Rust
  • Regex Flavor Guide

Function

  • Match
  • Substitution
  • List
  • Unit Tests

Tools

Sponsors
There are currently no sponsors. Become a sponsor today!
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

/
/
gmu

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

# If you'd like to omit non-matching lines from the result; add ';d' to the end of the expression. sed -E 's/^"([\w\s()]+)<.*?(\w+)\s+(\[\w+\]\s+\(\w+\)).*$/\L"\2";"\3";"\1"/gmu;t' <<< "\"КРОВАТЬ<img src=\"\"bed.png\"\" />\" BED [bed] (бэд)[sound:43.mp3] \"ДОМ (место жилья)<img src=\"\"home4.png\"\" />\" HOME [həʊm] (хоум)[sound:23.mp3] \"ЗУБ<img src=\"\"tooth2.png\"\" />\" TOOTH [tuθ] (туθ)[sound:30.mp3] \"ЗУБЫ<img src=\"\"teeth.png\"\" />\" TEETH [tiːθ] (тииθ)[sound:31.mp3] \"ИГРА<img src=\"\"game.jpg\"\" />\" GAME [geɪm] (гейм)[sound:32.mp3] \"ЖУРНАЛ<img src=\"\"magazine.jpg\"\" />\" MAGAZINE [ˌmægəˈziːn] (мæгэзиин)[sound:28.mp3] \"ЖИЗНЬ<img src=\"\"life.jpg\"\" />\" LIFE [laɪf] (лайф)[sound:27.mp3] \"ЖЕНЩИНА<img src=\"\"woman (1).jpg\"\" />\" WOMAN [ˈwʊmən] (wумэн)[sound:25.mp3] \"ЖЕНЩИНЫ<img src=\"\"women2 (1).jpg\"\" />\" WOMEN [ˈwɪmɪn] (wимин)[sound:26.mp3] \"ЕДА<img src=\"\"food.jpg\"\" />\" FOOD [fuːd] (фууд)[sound:24.mp3]"

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 SED, please visit: https://www.gnu.org/software/sed/manual/html_node/The-_0022s_0022-Command.html