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

// include the latest version of the regex crate in your Cargo.toml extern crate regex; use regex::Regex; fn main() { let regex = Regex::new(r#"(?m)^\"\w+\"\,(?:\")?(?<process>([\w|\s|\,|\.|\-|\+]+)?)(?:\")?\,\"(?<handles>\d+)\"\,\"(?<VM>[\-\d|\d]+)\"\,\"(?<WS>\d+)\"\,\"(?<PM>\d+)\"\,\"(?<NPM>\d+)\"\,(?:\")?(?<Path>([a-zA-Z]\:\\[\\\w\s\.\-\(\)\+|*\w]+)?)(?:\")?\,(?:\")?(?<Company>([\w|\s|\,|\.|\@]+)?)(?:\")?\,(?:\")?(?<CPU>[\d|\.]+)?(?:\")?\,(?:\")?(?<FileVersion>[\d|\.|\s|\(|\w|\_|\-|\)]+)?(?:\")?\,(?:\")?(?<ProductVersion>[\d|\.|\s|\(|\w|\_|\-|\)]+)?(?:\")?\,(?:\")?(?<Description>[\d|\.|\s|\(|\w|\_|\-|\|\+|\:)]+)?(?:\")?\,(?:\")?(?<Product>[\w|\s|\®|\+|\(|\)]+)?(?:\")?\,(?:\")?(?<Id>[\w|\s|\®|\+|\(|\)]+)?(?:\")?\,(?:\")?(?<PriorityClass>[\w|\s|\®|\+|\(|\)]+)?(?:\")?\,(?:\")?(?<HandleCount>[\w|\s|\®|\+|\(|\)]+)?(?:\")?\,"#).unwrap(); let string = "\"Process\",\"ServerManager\",\"509\",\"830853120\",\"149446656\",\"125960192\",\"31992\",\"C:\\Windows\\system32\\ServerManager.exe\",\"Microsoft Corporation\",\"140.25\",\"6.3.9600.17238 (winblue_gdr.140723-2018)\",\"6.3.9600.17238\",\"Server Manager\",\"Microsoft® Windows® Operating System\",\"18324\",\"Normal\",\"509\",\"149446656\",\"125960192\",\"125960192\",\"830853120\",\"00:02:20.2500000\",\"8\",,\"False\",,\"2200\",\"Microsoft.Win32.SafeHandles.SafeProcessHandle\",\".\",\"65976\",\"Server Manager\",\"System.Diagnostics.ProcessModule (ServerManager.exe)\",\"1413120\",\"204800\",\"System.Diagnostics.ProcessModuleCollection\",\"31992\",\"31992\",\"125960192\",\"741880\",\"741880\",\"256077824\",\"256077824\",\"279134208\",\"279134208\",\"885768192\",\"885768192\",\"True\",\"125960192\",\"00:00:27.8125000\",\"ServerManager\",\"255\",\"True\",\"1\",\"System.Diagnostics.ProcessStartInfo\",\"1/26/2020 3:22:29 PM\",,\"System.Diagnostics.ProcessThreadCollection\",\"00:01:52.4375000\",\"830853120\",\"False\",,,,\"149446656\",,"; // result will be an iterator over tuples containing the start and end indices for each match in the string let result = regex.captures_iter(string); for mat in result { println!("{:?}", mat); } }

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 Rust, please visit: https://docs.rs/regex/latest/regex/