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 = @"^(?:time=\""(?<longtime>\d{4}-\d{2}-\d{2}\D{1}\d{2}:\d{2}:\d{2}\+\d{2}:\d{2})\"") (?:level=(?<level>(info|warn|error))) (?:msg=\""(?<msg>.*)\"") (((?:duration=(?<duration>\d{1,9}.\d{1,9})) (?:gitaly_embedded=(?<gitaly_embedded>[^ ]+)) (?:method=(?<method>(POST|GET))))|((?:body=""(?<body>.*)"") (?<code>code=\d{3}) (?:method=(?<method2>(POST|GET)))|(?<command>command="".*""))|(?:key_id=key-(?<key_id>)\d{3})) (?:pid=(?<pid>\d{1,5})) (?:url=\""(((?<url>.*)\""))|(?:user=""(?<user>.*)"")|(?:public_key=""(?<public_key>.*)""))"; string input = @"time=""2019-06-10T09:23:34+03:00"" level=info msg=""finished HTTP request"" duration=0.02119909 gitaly_embedded=false method=POST pid=45053 url=""http://127.0.0.1:8080/api/v4/internal/allowed"" time=""2019-06-10T09:23:34+03:00"" level=info msg=""executing git command"" command=""gitaly-upload-pack unix:/var/opt/gitlab/gitaly/gitaly.socket {\""repository\"":{\""storage_name\"":\""default\"",\""relative_path\"":\""internet_platform/auto_tests.git\"",\""git_object_directory\"":\""\"",\""git_alternate_object_directories\"":[],\""gl_repository\"":\""project-548\"",\""gl_project_path\"":\""internet_platform/auto_tests\""},\""gl_repository\"":\""project-548\"",\""gl_project_path\"":\""internet_platform/auto_tests\"",\""gl_id\"":\""key-147\"",\""gl_username\"":\""Ext-Y.Korop\"",\""git_config_options\"":[],\""git_protocol\"":null}"" pid=45053 user=""user with id key-147"" time=""2019-06-10T09:23:38+03:00"" level=info msg=""finished HTTP request"" duration=0.021129036 gitaly_embedded=false method=POST pid=45077 url=""http://127.0.0.1:8080/api/v4/internal/allowed"" time=""2019-06-10T09:23:38+03:00"" level=info msg=""executing git command"" command=""gitaly-upload-pack unix:/var/opt/gitlab/gitaly/gitaly.socket {\""repository\"":{\""storage_name\"":\""default\"",\""relative_path\"":\""erl-omsk/eps-storage-web.git\"",\""git_object_directory\"":\""\"",\""git_alternate_object_directories\"":[],\""gl_repository\"":\""project-1375\"",\""gl_project_path\"":\""erl-omsk/eps-storage-web\""},\""gl_repository\"":\""project-1375\"",\""gl_project_path\"":\""erl-omsk/eps-storage-web\"",\""gl_id\"":\""key-147\"",\""gl_username\"":\""Ext-Y.Korop\"",\""git_config_options\"":[],\""git_protocol\"":null}"" pid=45077 user=""user with id key-147"" time=""2019-06-10T09:23:42+03:00"" level=info msg=""finished HTTP request"" duration=0.021581528 gitaly_embedded=false method=POST pid=45169 url=""http://127.0.0.1:8080/api/v4/internal/allowed"" time=""2019-06-10T09:23:42+03:00"" level=info msg=""executing git command"" command=""gitaly-upload-pack unix:/var/opt/gitlab/gitaly/gitaly.socket {\""repository\"":{\""storage_name\"":\""default\"",\""relative_path\"":\""erl-omsk/smev-fssp.git\"",\""git_object_directory\"":\""\"",\""git_alternate_object_directories\"":[],\""gl_repository\"":\""project-63\"",\""gl_project_path\"":\""erl-omsk/smev-fssp\""},\""gl_repository\"":\""project-63\"",\""gl_project_path\"":\""erl-omsk/smev-fssp\"",\""gl_id\"":\""key-147\"",\""gl_username\"":\""Ext-Y.Korop\"",\""git_config_options\"":[],\""git_protocol\"":null}"" pid=45169 user=""user with id key-147"" time=""2019-06-10T09:23:44+03:00"" level=info msg=""finished HTTP request"" duration=0.022346368 gitaly_embedded=false method=POST pid=45236 url=""http://127.0.0.1:8080/api/v4/internal/allowed"" time=""2019-06-10T09:23:44+03:00"" level=error msg=""Call failed"" body=""{\""status\"":false,\""message\"":\""Your account has been blocked.\""}"" code=401 method=POST pid=45236 url=""http://127.0.0.1:8080/api/v4/internal/allowed"" time=""2019-06-10T09:23:44+03:00"" level=warn msg=""Access denied"" command=""git-upload-pack 'kubernetes/heapster-k8s-config.git'"" pid=45236 user=""user with id key-18"" time=""2019-06-10T09:23:46+03:00"" level=info msg=""finished HTTP request"" duration=0.019885438 gitaly_embedded=false method=POST pid=45308 url=""http://127.0.0.1:8080/api/v4/internal/allowed"" time=""2019-06-10T09:23:46+03:00"" level=info msg=""executing git command"" command=""gitaly-upload-pack unix:/var/opt/gitlab/gitaly/gitaly.socket {\""repository\"":{\""storage_name\"":\""default\"",\""relative_path\"":\""erl-omsk/eps-mail-receiver.git\"",\""git_object_directory\"":\""\"",\""git_alternate_object_directories\"":[],\""gl_repository\"":\""project-814\"",\""gl_project_path\"":\""erl-omsk/eps-mail-receiver\""},\""gl_repository\"":\""project-814\"",\""gl_project_path\"":\""erl-omsk/eps-mail-receiver\"",\""gl_id\"":\""key-147\"",\""gl_username\"":\""Ext-Y.Korop\"",\""git_config_options\"":[],\""git_protocol\"":null}"" pid=45308 user=""user with id key-147"" time=""2019-06-10T09:23:51+03:00"" level=info msg=""finished HTTP request"" duration=0.025155263 gitaly_embedded=false method=POST pid=45461 url=""http://127.0.0.1:8080/api/v4/internal/allowed"" time=""2019-06-10T09:23:51+03:00"" level=info msg=""executing git command"" command=""gitaly-upload-pack unix:/var/opt/gitlab/gitaly/gitaly.socket {\""repository\"":{\""storage_name\"":\""default\"",\""relative_path\"":\""erl-omsk/eps-api.git\"",\""git_object_directory\"":\""\"",\""git_alternate_object_directories\"":[],\""gl_repository\"":\""project-906\"",\""gl_project_path\"":\""erl-omsk/eps-api\""},\""gl_repository\"":\""project-906\"",\""gl_project_path\"":\""erl-omsk/eps-api\"",\""gl_id\"":\""key-147\"",\""gl_username\"":\""Ext-Y.Korop\"",\""git_config_options\"":[],\""git_protocol\"":null}"" pid=45461 user=""user with id key-147"" time=""2019-06-10T09:23:53+03:00"" level=info msg=""finished HTTP request"" duration=0.0159927 gitaly_embedded=false method=POST pid=45550 url=""http://127.0.0.1:8080/api/v4/internal/allowed"" time=""2019-06-10T09:23:53+03:00"" level=info msg=""executing git command"" command=""gitaly-upload-pack unix:/var/opt/gitlab/gitaly/gitaly.socket {\""repository\"":{\""storage_name\"":\""default\"",\""relative_path\"":\""uksz/as-ss-stub.git\"",\""git_object_directory\"":\""\"",\""git_alternate_object_directories\"":[],\""gl_repository\"":\""project-1644\"",\""gl_project_path\"":\""uksz/as-ss-stub\""},\""gl_repository\"":\""project-1644\"",\""gl_project_path\"":\""uksz/as-ss-stub\"",\""gl_id\"":\""key-580\"",\""gl_username\"":\""Ext-A.P.Kosarenko\"",\""git_config_options\"":[],\""git_protocol\"":null}"" pid=45550 user=""user with id key-580"" time=""2019-06-10T09:23:54+03:00"" level=info msg=""finished HTTP request"" duration=0.014709537 gitaly_embedded=false method=POST pid=45593 url=""http://127.0.0.1:8080/api/v4/internal/allowed"" time=""2019-06-10T09:23:54+03:00"" level=error msg=""Call failed"" body=""{\""status\"":false,\""message\"":\""Your account has been blocked.\""}"" code=401 method=POST pid=45593 url=""http://127.0.0.1:8080/api/v4/internal/allowed"" time=""2019-06-10T09:23:54+03:00"" level=warn msg=""Access denied"" command=""git-upload-pack 'Docker/example.git'"" pid=45593 user=""user with id key-18"" time=""2019-06-10T09:23:55+03:00"" level=info msg=""finished HTTP request"" duration=0.020508204 gitaly_embedded=false method=POST pid=45669 url=""http://127.0.0.1:8080/api/v4/internal/allowed"" time=""2019-06-10T09:23:55+03:00"" level=info msg=""executing git command"" command=""gitaly-upload-pack unix:/var/opt/gitlab/gitaly/gitaly.socket {\""repository\"":{\""storage_name\"":\""default\"",\""relative_path\"":\""erl-omsk/eps-digital-signature.git\"",\""git_object_directory\"":\""\"",\""git_alternate_object_directories\"":[],\""gl_repository\"":\""project-785\"",\""gl_project_path\"":\""erl-omsk/eps-digital-signature\""},\""gl_repository\"":\""project-785\"",\""gl_project_path\"":\""erl-omsk/eps-digital-signature\"",\""gl_id\"":\""key-147\"",\""gl_username\"":\""Ext-Y.Korop\"",\""git_config_options\"":[],\""git_protocol\"":null}"" pid=45669 user=""user with id key-147"""; 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