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

package main import ( "regexp" "fmt" ) func main() { var re = regexp.MustCompile(`(?m)\w.*solarwinds.orion\\(solarwinds.*|swjobengine.*|netflowservice.*|counterfetcher.*)\.exe$`) var str = `// Explanation // Matches all files part of the "orion" folder that start with solarwinds,swjobengine,netflowservice,counterfetcher and ends with ".exe" // Some Solarwinds exe starting with "solarwinds." e:\program files\solarwinds\orion\solarwinds.orion.logmgmt.syslogservice.exe e:\program files\solarwinds\orion\solarwinds.businesslayerhostx64.exe e:\program files\solarwinds\orion\solarwinds.orion.logmgmt.syslogservice.exe e:\program files\solarwinds\orion\solarwinds.collector.service.exe e:\program files\solarwinds\orion\solarwinds.orion.logmgmt.pollingservice.exe e:\program files\solarwinds\orion\solarwinds.businesslayerhost.exe e:\program files\solarwinds\orion\solarwinds.orion.logmgmt.trapservice.exe e:\program files\solarwinds\orion\solarwinds.recommendations.service.exe e:\program files\solarwinds\orion\solarwinds.informationservice.servicev3.exe e:\program files\solarwinds\orion\solarwinds.highavailability.service.exe e:\program files\solarwinds\orion\solarwinds.servicehost.process.exe e:\program files\solarwinds\orion\solarwinds.topology.calculator.exe // Example with another drive C:\program files\solarwinds\orion\solarwinds.topology.calculator.exe // Some Solarwinds exe NOT starting with "solarwinds." e:\program files\solarwinds\orion\netflowservice.exe e:\program files\solarwinds\orion\swjobengineworker2.exe e:\program files\solarwinds\orion\swjobenginesvc2.exe e:\program files\solarwinds\orion\swjobengineworker2x64.exe e:\program files\solarwinds\orion\counterfetcher.exe // Non Orion folders c:\program files\common files\solarwinds\administrationservice\solarwinds.administration.exe // TESTS e:\program files\solarwinds\orion\solarwinds.exe e:\program files\solarwinds\orion\solarwinds.test.exe e:\program files\solarwinds\orion\solarwinds.test.test2.exe Without orion folder e:\program files\solarwinds\NotOrion\solarwinds.servicehost.process.exe ` for i, match := range re.FindAllString(str, -1) { fmt.Println(match, "found at index", i) } }

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 Golang, please visit: https://golang.org/pkg/regexp/