Regular Expressions 101

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Community Patterns

1

golang re2 negative lookahead

Golang
Aquivalent solution for golang's unsupported negative lookahead in re2 flavor of go's regex. This example provides a negative lookahead similar to (?!/api/) ignoring routes with the /api/ prefix at the start.
Submitted by misha - a year ago
1

Authelia regex path rules

Golang
Testing Authelia subdomain / path rules. You can read more at the Authelia Docs By default, this regex101 page is shown a test for a generic API path domain: "some-sub.drpranavmishra.com" resources:...
Submitted by Pranav Mishra - a year ago (Last modified a year ago)
1

extract <*n or <n where n is a number

Golang
see https://stackoverflow.com/questions/76228402/regex-to-extract-n-where-n-is-digit
Submitted by code_monk - a year ago
1

Home

Golang
Dj dus er geen je een je aan je enige eerst een he we er
Submitted by Webmaster - a year ago
1

0x28C6A6DdF8fF8A47A90A69bfE75cd89904a14d71

Golang
0x28C6A6DdF8fF8A47A90A69bfE75cd89904a14d71
Submitted by anonymous - a year ago
1

Kafka loki parser

Golang
Kafka loki parser
Submitted by anonymous - a year ago
1

Split Docker image into image name, tag and digest with all optional

Golang
Splits a Docker image string into the separate parts: image, tag, digest tag and digest are optional
Submitted by Roemer - 13 days ago
2

domain for Google Data Studio (re2 dialect)

Golang
Matches subdomain, domain and top level in a field that contains a urls. https://www.whatever.you.want ---> whatever.you.want
Submitted by anonymous - 8 years ago
2

Mikrotik firewall logs

Golang
Matching for mikrotik ROS 7 Used in promtail and grafana
Submitted by anonymous - a year ago (Last modified a year ago)
3

Hostname validation

Golang
Validates subdomain, root domain, and wild card domains
Submitted by AnonymousDapper - 8 years ago
3

Extract URL parts only named capturing groups

Golang
Extract URL parts only named capturing groups
Submitted by dixanms - 3 years ago
1...8910

smoothie oops

0

Regular Expression
PCRE (PHP <7.3)

/
\-(\s+)([A-Za-z0-9!\->\)\( ]+)?SMOOTHIEERROR(wArgs)?\(eErrorSeverity_([A-Za-z]+),(\s+)eErrorSection_([A-Za-z]+),(\s+)eErrorCode_([A-Za-z]+),(\s+)([A-Za-z0-9\(\), %:\?\->\r\n"\+@\/\._;\]\[]+)\);\s+(\/\/[\[\]a-z0-9 \->]+)\s\+\s+([A-Za-z0-9!\->\)\( ]+)? ([A-Za-z\->\._]+)\->printf\([A-Za-z0-9\(\), %:\?\->\r\n"\+\\\/@_\.;\[\]]*\);
/
g
Open regex in editor

Description

no description available

Submitted by anonymous - 7 years ago