journalctl provides a bunch of different output messsages. This regex is searching for failed or accepted connection strings. The following groups are defined: ssh_id**:   The connection id. action**:   Can be 'Accepted' or 'Failed' username**:  The username ...

the source log of asa cisco firewall is not RFC formatted this regex (java) match all globaly

##My First regular expression

Remove leading "http://" or "https://" and optionally a "www." for look up