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

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"(?<=authorization:\s)([\w-.]+)(?=' \^)"; string input = @"curl 'https://i-tools.cys.com/api/v1/places/nearby?latitude=-6.30491801&longitude=106.6861089&radius_in_km=0.5&providers=internaltopv2&limit=10&msg_id=aa0cabd1-db82-11ea-af17-1d5f5xxxxx' \ -H 'authority: i-tools.cys.com' \ -H 'accept: application/json, text/plain, */*' \ -H 'authorization: axZhbGciOiJSUzI1NiIsImtpZCI6Il9kZWZhdWx0IiwidHlwIjoiSldUIn0.eyJhdWQiOiJHRU8tVE9PTFMiLCJleHAiOjE2MDgxMDgxNDYsImlhdCI6MTYwODAyMTc0MywianRpIjoiNDA2NjI5NzgtN2RmMS00MDE5LThjZTktMTZkMTFlMjY4NmYyIiwibG1lIjoiR09PR0xFVjMiLCJuYW1lIjoiIiwic3ViIjoiNWU1ZWQyM2YtNGRkMi00YmY3LThkNTEtZGM0MzY0NDdmNzg5In0.IXBubd0NrCaVEyrnaskH4CO50nP5qLz-6G02IBpy0vnPAjHcFeLd4OdocN2TinuBiK_LtgIfIgLCOJx_A3hsNCqnAbIRKfKV6b7xO7HSLNXIT3PS8iAy_z2I5bW4-hUcKJkrMJcgHA8j2bBZGlAPaDf6PkjdzFM7M0P_kXk5H_zKyO2prAQA-eh3UYUr22PLptLsusWMAfXFGf42eUoNz6gq8KKWzaO0wc7FqrYD-rLz50xDMuwLS9J-su4TzIhpJgaMKq8rIvNyy5nAs-77IhG_foaIelVY6ZGFgUe_dvq0Ox9JrR8tqLV7kRwMf7EAIgbdKN-Xxu8ZbulhhuxNZA' ^ -H 'i-tools-params: {""client_version"":""v11.0.1xxxx""}' \ -H 'user-agent: Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Mobile Safari/537.36' \ -H 'x-app-identity: i_tools' \ -H 'origin: https://i-tools.cys.net' \ -H 'sec-fetch-site: cross-site' \ -H 'sec-fetch-mode: cors' \ -H 'sec-fetch-dest: empty' \ -H 'referer: https://i-tools.cys.net/ops-tools/place-nearby-v2' \ -H 'accept-language: id-ID,id;q=0.9,en-US;q=0.8,en;q=0.7' \ --compressed"; RegexOptions options = RegexOptions.Multiline; foreach (Match m in Regex.Matches(input, pattern, options)) { Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index); } } }

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 C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx