Test

vn (-?[0-9. ]+){3}|v (-?[0-9. ]+){3}|f ([0-9. \/]+){3}

/%A-Z+%*\|[0-9]+\|[0-9]+(\.[0-9])?\$/g

opinionated email validation based on https://en.wikipedia.org/wiki/Email_address. i have excluded some email patterns that don't seem to be common

Identify files exported from L0 for trfr to L1. This was used before the new Student Daily Attendance monthly naming convention

Use Filebeat and split log filenames in Logstash into separate fields: `grok { match => "[log[path]", "(?\w+)\.(?[a-zA-Z-]+)\.(?[a-zA-Z-]+)"] }` use filenames like...

在清除字符串里的非字母数字字符且需要留下&用于拆分时可用

matches parts of an email address and captures elements into groups

basic grammar rules

Take a text of curl command and regex them down to a list of objects with named identifiers, such as id, date, and action.

Useful for checking comma separated full names