using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?:[^\s][^\s]+\s){2}(?P<field1>[^\s]+(?:\s\w+)?)\s\d+\s+<";
string input = @"<37> 1 2018-04-23T08:08:08Z E876876876 auth 0 <login> [kdnckn rrgrr]
<37> 1 2018-04-23T08:08:08Z E876876876 SECURE AUDIT 0 <secure audit error> [cdkncdckne dckmdkcmd]
";
foreach (Match m in Regex.Matches(input, pattern))
{
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