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

Substitution

Processing...

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"(""log"":"".*?(?P<message>Company\s*[^\.]+.)\s*Company:\s*\[(?P<company>[0-9]+)\]\.\s*Rate:\s*\[(?P<rate>[0-9\.B\\\/s]+)\])"; string substitution = @"""message"":""$message"",""company"":""$company"",""rate"":""$rate"",${1}"; string input = @"{""kubernetes"":{""pod_name"":""throttler-0"",""namespace_name"":""default"",""pod_id"":""4f91ad3a-dd6f-4d56-b08a-2225edd67f9b"",""labels"":{""CX_AZ"":""us-east-2a"",""CX_CLOUDFLARE_SITE_ID"":""ddb3ffb7b6beb645b97e4bab3fbcfc44"",""CX_CLUSTER_DNS"":""usprod1.us-east-2.k8s-prod.coralogix.us"",""CX_DEPLOYABLE"":""default"",""CX_DOMAIN"":""coralogix.us"",""CX_ENV_CLASS"":""usprod1"",""CX_ENV_ID"":""usprod1"",""CX_ENV_TYPE"":""prod"",""CX_ORG"":""coralogix"",""CX_PRODUCT"":""logs-data"",""CX_REGION"":""us-east-2"",""CX_REPOSITORY"":""throttler"",""CX_SERVICE_NAME"":""throttler"",""CX_SERVICE_TYPE"":""application"",""app_kubernetes_io_instance"":""throttler"",""app_kubernetes_io_managed-by"":""Helm"",""app_kubernetes_io_name"":""throttler"",""controller-revision-hash"":""throttler-8b99fb774"",""pipelines.coralogix.net\/managed-by"":""eng-pipelines"",""pipelines.coralogix.net\/pipelines-version"":""0.3.42"",""statefulset.kubernetes.io\/pod-name"":""throttler-0""},""host"":""ip-10-11-108-110.us-east-2.compute.internal"",""container_name"":""throttler"",""docker_id"":""90015d1ac334d32e38f69fa603b22b02a03182d00df7264a006f29b1f4fa066a"",""container_hash"":""529726762838.dkr.ecr.eu-west-1.amazonaws.com\/throttler@sha256:1f8859d7e841f7f22d24bc882f6677199a747c0b40ee2f2ccb1cc4e10f46d4d3"",""container_image"":""529726762838.dkr.ecr.eu-west-1.amazonaws.com\/throttler:392e6bdc""},""stream"":""stdout"",""log"":""[INFO] 2022-11-03T07:03:02,464 com.coralogix.throttler.model.Violation throttler-0af20f87-e6c8-4b51-8993-9e726245860a-StreamThread-1 Company transitioned into violated state. Company: [2010806]. Rate: [1298828.7833333334B\/s]."",""time"":""2022-11-03T07:03:02.464514886Z""}"; RegexOptions options = RegexOptions.Multiline; Regex regex = new Regex(pattern, options); string result = regex.Replace(input, substitution); } }

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