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 = @"{(\n*.*\n*)}"; string input = @"2019-03-06 16:17:27 INF Creating container.\r\n2019-03-06 16:17:27 INF Container name : [lalaland]\r\n2019-03-06 16:17:28 INF Get or Create operation executed successfully.\r\n{\r\n \""data\"": {\r\n \""command\"": \""/usr/sbin/boot.sh\"",\r\n \""created\"": 1551838866,\r\n \""hostConfig\"": {\r\n \""autoRemove\"": false,\r\n \""binds\"": null,\r\n \""blkioDeviceReadBps\"": null,\r\n \""blkioDeviceReadIOps\"": null,\r\n \""blkioDeviceWriteBps\"": null,\r\n \""blkioDeviceWriteIOps\"": null,\r\n \""blkioWeight\"": 0,\r\n \""blkioWeightDevice\"": null,\r\n \""capAdd\"": null,\r\n \""capDrop\"": null,\r\n \""cgroup\"": null,\r\n \""cgroupParent\"": null,\r\n \""consoleSize\"": null,\r\n \""containerIDFile\"": null,\r\n \""cpuCount\"": 0,\r\n \""cpuPercent\"": 0,\r\n \""cpuPeriod\"": 0,\r\n \""cpuQuota\"": 0,\r\n \""cpuRealtimePeriod\"": 0,\r\n \""cpuRealtimeRuntime\"": 0,\r\n \""cpuShares\"": 0,\r\n \""cpusetCpus\"": null,\r\n \""cpusetMems\"": null,\r\n \""deviceCgroupRules\"": null,\r\n \""devices\"": null,\r\n \""diskQuota\"": 0,\r\n \""dns\"": null,\r\n \""dnsOptions\"": null,\r\n \""dnsSearch\"": null,\r\n \""extraHosts\"": null,\r\n \""groupAdd\"": null,\r\n \""ioMaximumBandwidth\"": 0,\r\n \""ioMaximumIOps\"": 0,\r\n \""ipcMode\"": null,\r\n \""isolation\"": null,\r\n \""kernelMemory\"": 0,\r\n \""links\"": null,\r\n \""logConfig\"": null,\r\n \""memory\"": 0,\r\n \""memoryReservation\"": 0,\r\n \""memorySwap\"": 0,\r\n \""memorySwappiness\"": null,\r\n \""nanoCpus\"": 0,\r\n \""networkMode\"": \""default\"",\r\n \""oomKillDisable\"": false,\r\n \""oomScoreAdj\"": 0,\r\n \""pidMode\"": null,\r\n \""pidsLimit\"": 0,\r\n \""portBindings\"": null,\r\n \""privileged\"": false,\r\n \""publishAllPorts\"": false,\r\n \""readonlyRootfs\"": false,\r\n \""restartPolicy\"": null,\r\n \""runtime\"": null,\r\n \""securityOpt\"": null,\r\n \""shmSize\"": 0,\r\n \""utsMode\"": null,\r\n \""ulimits\"": null,\r\n \""usernsMode\"": null,\r\n \""volumeDriver\"": null,\r\n \""volumesFrom\"": null\r\n },\r\n \""id\"": \""a1fc854544650ec93a1e6964b9de0f045d62618f107056b20abcf0dc4ae0f61a\"",\r\n \""image\"": \""solace/solace-pubsub-standard:latest\"",\r\n \""imageID\"": \""sha256:4be92bf62c8526d684d7e45e1db27413b8b5f6f556a5ed3552fb292ee1368cd6\"",\r\n \""mounts\"": [\r\n {\r\n \""destination\"": \""/usr/sw/jail\"",\r\n \""driver\"": \""local\"",\r\n \""mode\"": \""\"",\r\n \""name\"": \""86ef434be868d57068a98056d84b78210452987eebe8794c01bb81a99f0b0ed0\"",\r\n \""propagation\"": \""\"",\r\n \""rw\"": true,\r\n \""source\"": \""\"",\r\n \""type\"": \""volume\""\r\n },\r\n {\r\n \""destination\"": \""/usr/sw/var\"",\r\n \""driver\"": \""local\"",\r\n \""mode\"": \""\"",\r\n \""name\"": \""a816e052177bf96b27b85b8f08667ac04dd0a61fe8a0704872d0056183bb1a90\"",\r\n \""propagation\"": \""\"",\r\n \""rw\"": true,\r\n \""source\"": \""\"",\r\n \""type\"": \""volume\""\r\n },\r\n {\r\n \""destination\"": \""/usr/sw/adb\"",\r\n \""driver\"": \""local\"",\r\n \""mode\"": \""\"",\r\n \""name\"": \""3c999fe711a0f67b3ba76f28275a45184b388714520b1325cea2c9487c22f84e\"",\r\n \""propagation\"": \""\"",\r\n \""rw\"": true,\r\n \""source\"": \""\"",\r\n \""type\"": \""volume\""\r\n },\r\n {\r\n \""destination\"": \""/usr/sw/internalSpool\"",\r\n \""driver\"": \""local\"",\r\n \""mode\"": \""\"",\r\n \""name\"": \""63ede5a141e08d7aca52b474d2f4f3694ddff1dcb0085b356c4ed26597095b57\"",\r\n \""propagation\"": \""\"",\r\n \""rw\"": true,\r\n \""source\"": \""\"",\r\n \""type\"": \""volume\""\r\n },\r\n {\r\n \""destination\"": \""/usr/sw/internalSpool/softAdb\"",\r\n \""driver\"": \""local\"",\r\n \""mode\"": \""\"",\r\n \""name\"": \""146dc96e171076cb165ea046508713c04dc9557002510ab2c37fb54283c2fbf1\"",\r\n \""propagation\"": \""\"",\r\n \""rw\"": true,\r\n \""source\"": \""\"",\r\n \""type\"": \""volume\""\r\n }\r\n ],\r\n \""names\"": [\r\n \""lalaland\""\r\n ],\r\n \""networkSettings\"": {\r\n \""bridge\"": null,\r\n \""endpointID\"": null,\r\n \""gateway\"": null,\r\n \""globalIPv6Address\"": null,\r\n \""globalIPv6PrefixLen\"": 0,\r\n \""hairpinMode\"": false,\r\n \""ipAddress\"": null,\r\n \""ipPrefixLen\"": 0,\r\n \""iPv6Gateway\"": null,\r\n \""linkLocalIPv6Address\"": null,\r\n \""linkLocalIPv6PrefixLen\"": 0,\r\n \""macAddress\"": null,\r\n \""networks\"": {\r\n \""bridge\"": {\r\n \""aliases\"": null,\r\n \""driverOpts\"": null,\r\n \""endpointID\"": \""513a9f23ea2852614e556d61ce13b8cde38da27563de5f9978acf59f7a1834f3\"",\r\n \""gateway\"": \""172.17.0.1\"",\r\n \""globalIPv6Address\"": \""\"",\r\n \""globalIPv6PrefixLen\"": 0,\r\n \""ipamConfig\"": null,\r\n \""ipAddress\"": \""172.17.0.5\"",\r\n \""ipPrefixLen\"": 16,\r\n \""iPv6Gateway\"": \""\"",\r\n \""links\"": null,\r\n \""macAddress\"": \""02:42:ac:11:00:05\"",\r\n \""networkID\"": \""e60ce3b2bf4eb3767372dd896f4a34d147d24e18cfa691aa2d5a152c436050ad\""\r\n }\r\n },\r\n \""ports\"": null,\r\n \""sandboxID\"": null,\r\n \""sandboxKey\"": null,\r\n \""secondaryIPAddresses\"": null,\r\n \""secondaryIPv6Addresses\"": null\r\n },\r\n \""ports\"": [\r\n {\r\n \""privatePort\"": 2222,\r\n \""type\"": \""tcp\"",\r\n \""ip\"": null,\r\n \""publicPort\"": null\r\n },\r\n {\r\n \""privatePort\"": 55555,\r\n \""type\"": \""tcp\"",\r\n \""ip\"": \""0.0.0.0\"",\r\n \""publicPort\"": 11318\r\n },\r\n {\r\n \""privatePort\"": 8080,\r\n \""type\"": \""tcp\"",\r\n \""ip\"": \""0.0.0.0\"",\r\n \""publicPort\"": 10505\r\n }\r\n ],\r\n \""state\"": \""running\"",\r\n \""solaceMessagingConnectionString\"": \""tcp://cap-docker-poc:11318\"",\r\n \""solaceManagementConnectionString\"": \""tcp://cap-docker-poc:10505\"",\r\n \""isConnectionToSolaceClientOk\"": true,\r\n \""containerStatus\"": null,\r\n \""messages\"": null,\r\n \""success\"": 0\r\n },\r\n \""result\"": 0\r\n}\r\n { test : test } "; 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