Or, another alternative that runs in the browser: http://www.regex101.com/ ☺ Stefan From: freeradius-users-bounces+stefan.paetow=ja.net@lists.freeradius.org [mailto:freeradius-users-bounces+stefan.paetow=ja.net@lists.freeradius.org] On Behalf Of Nick Lowe Sent: 02 September 2014 00:05 To: FreeRadius users mailing list Subject: Re: Problem with policy.d/filter Peter, If you are struggling with regular expressions, just want to get more familiar with them or explore/validate existing ones, the best tool that I have found is RegexBuddy. It runs happily under Wine too if you need Linux 'support'. http://www.regexbuddy.com/ (As I realise already this reads like spam! Yes it's a paid tool. No, I'm not affiliated in any way.) Nick Janet(UK) is a trading name of Jisc Collections and Janet Limited, a not-for-profit company which is registered in England under No. 2881024 and whose Registered Office is at Lumen House, Library Avenue, Harwell Oxford, Didcot, Oxfordshire. OX11 0SG. VAT No. 614944238