re = /(?P<date>\S{3}\s\d{1,3}\s\d{2}\:\d{2}\:\d{2})\s(?P<device>\S+)\s\S\=(?P<src>\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})\:\s\S\=\"(?P<user>.*?)\"\s\S\=\d+\s\S\=\S\s\S\=\d+\s\S\=\d+\s\S+\=\d\s\S{1,3}\=.*?type=\".*?\"\s.*?meth=(?P<type>\S+)\s\S+\=\"(?P<url>.*?)\"\s\S{2}\=\"(?P<agent>.*?)\"\s\S{1,3}\=\"(?P<url2>.*?)dom\=\"(?P<domain>.*?)\".*?target_ip\=\"(?P<dest>\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})\".*/
str = 'Oct 18 06:27:03 WS2000.wnins.com h=172.16.20.74: u="WNINS\\\\rehetzel" s=200 X=+ t=1445149621 T=44767 Ts=0 act=1 cat="0x2200000008" app="-" rsn=- threat="-" type="image/jpeg" ctype="image/jpeg" sav-ev=- sav-dv=- uri-dv=- cache=- in=471 out=990 meth=GET ref="http://www.techrepublic.com/blog/the-enterprise-cloud/how-do-i-assign-permissions-to-users-to-see-sql-agent-jobs/" ua="Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.99 Safari/537.36" req="GET http://d.pzkysq.pink/5ET3nslK.jpg?z=715211411411 HTTP/1.1" dom="pzkysq.pink" filetype="-" rule="0" filesize=518 axtime=0.000455 fttime=0.000043 scantime=- src_cat="0x2000000008" labs_cat="0x2000000008" dcat_prox="-" target_ip="204.93.43.48" labs_rule_id="0" reqtime=0.000 adtime=0.000000 ftbypass=- os=Windows authn=17 auth_by=ntlm dnstime=0.000009 quotatime=-'
subst = ''
result = str.sub(re, subst)
# Print the result of the substitution
puts result
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 Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html