Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
gm

Test String

Code Generator

Language

Generated Code

use strict; my $str = 'Apr 29 11:08:16 10.150.148.52 date=2023-04-29 time=11:08:17 devname="ABCZWPFWFTG-B" devid="ABCVM8V0000158159" eventtime=1682791697444922720 tz="-0700" logid="1059028704" type="utm" subtype="app-ctrl" eventtype="signature" level="information" vd="root" appid=40568 srcip=10.150.150.10 dstip=20.62.63.153 srcport=55544 dstport=443 srcintf="port2" srcintfrole="lan" dstintf="port1" dstintfrole="wan" proto=6 service="SSL" direction="incoming" policyid=1 sessionid=4976047 applist="PROD-APPCTRL-AZURE" action="pass" appcat="Web.Client" app="HTTPS.BROWSER" hostname="124537f1-b52d-4e77-a6bd-e73c9904ea48.agentsvc.azure-automation.net" incidentserialno=205723388 url="/" msg="Web.Client: HTTPS.BROWSER," apprisk="medium" scertcname="*.azure-automation.net" scertissuer="Microsoft RSA TLS CA 01" Apr 29 11:08:16 10.150.148.52 date=2023-04-29 time=11:08:17 devname="ABCZWPFWFTG-B" devid="ABCVM8V0000158159" eventtime=1682791697444901220 tz="-0700" logid="1059028704" type="utm" subtype="app-ctrl" eventtype="signature" level="information" vd="root" appid=15895 srcip=10.150.150.10 dstip=20.62.63.153 srcport=55544 dstport=443 srcintf="port2" srcintfrole="lan" dstintf="port1" dstintfrole="wan" proto=6 service="SSL" direction="outgoing" policyid=1 sessionid=4976047 applist="PROD-APPCTRL-AZURE" action="pass" appcat="Network.Service" app="SSL" hostname="124537f1-b52d-4e77-a6bd-e73c9904ea48.agentsvc.azure-automation.net" incidentserialno=205723383 url="/" msg="Network.Service: SSL," apprisk="elevated" scertcname="*.azure-automation.net" scertissuer="Microsoft RSA TLS CA 01" Apr 29 11:08:16 10.150.148.52 date=2023-04-29 time=11:08:17 devname="ABCZWPFWFTG-B" devid="ABCVM8V0000158159" eventtime=1682791697444603820 tz="-0700" logid="1059028704" type="utm" subtype="app-ctrl" eventtype="signature" level="information" vd="root" appid=40568 srcip=45.42.34.136 dstip=10.150.148.104 srcport=60638 dstport=443 srcintf="port1" srcintfrole="wan" dstintf="port5" dstintfrole="dmz" proto=6 service="SSL" direction="incoming" policyid=10 sessionid=4976049 applist="PROD-APPCTRL-AZURE" action="pass" appcat="Web.Client" app="HTTPS.BROWSER" hostname="www.testdata.com" incidentserialno=205723390 url="/" msg="Web.Client: HTTPS.BROWSER," apprisk="medium" scertcname="www.testdata.com" May 19 16:32:23 10.150.160.13 date=2023-05-19 time=16:32:25 devname="fw1-test-lv-external" devid="ABC1K5DT918800482" eventtime=1684539145135795404 tz="-0700" logid="0000000013" type="traffic" subtype="forward" level="notice" vd="PRODUCTION" srcip=10.150.161.11 srcport=64507 srcintf="ABCTCORPO3.3052" srcintfrole="lan" dstip=208.11.121.76 dstport=53 dstintf="ABCTINTPO1.3053" dstintfrole="wan" srccountry="Reserved" dstcountry="United States" sessionid=547154413 proto=17 action="accept" policyid=247 policytype="policy" poluuid="07588088-f351-51ec-153c-4a07e49c5818" policyname="Microsoft DNS to Umbrella" service="DNS" trandisp="snat" transip=38.70.139.3 transport=64507 duration=249 sentbyte=169 rcvdbyte=231 sentpkt=2 rcvdpkt=2 appcat="unscanned" srchwvendor="Cisco" devtype="Network" srcfamily="AP" osname="Cisco IOS" mastersrcmac="12:12:12:12:dc:27" srcmac="12:12:12:12:dc:27" srcserver=0 May 19 16:23:57 10.150.160.13 date=2023-05-19 time=16:23:58 devname="fw1-test-lv-external" devid="ABC1K5DT918800482" eventtime=1684538639125610717 tz="-0700" logid="0000000020" type="traffic" subtype="forward" level="notice" vd="PRODUCTION" srcip=10.150.161.11 srcport=63392 srcintf="ABCTCORPO3.3052" srcintfrole="lan" dstip=208.11.121.76 dstport=53 dstintf="ABCTINTPO1.3053" dstintfrole="wan" srccountry="Reserved" dstcountry="United States" sessionid=547134202 proto=17 action="accept" policyid=247 policytype="policy" poluuid="07588088-f351-51ec-153c-4a07e49c5818" policyname="Microsoft DNS to Umbrella" service="DNS" trandisp="snat" transip=38.70.139.3 transport=63392 duration=145 sentbyte=230 rcvdbyte=382 sentpkt=3 rcvdpkt=3 appcat="unscanned" sentdelta=230 rcvddelta=382 srchwvendor="Cisco" devtype="Network" srcfamily="AP" osname="Cisco IOS" mastersrcmac="12:12:12:12:dc:27" srcmac="12:12:12:12:dc:27" srcserver=0 May 19 16:25:35 10.132.119.14 date=2023-05-19 time=16:25:36 devname="FW1-testMAIN-ABCT01" devid="ABCT3KD3Z17800372" eventtime=1684538737153322514 tz="-0700" logid="0000000020" type="traffic" subtype="forward" level="notice" vd="PRODUCTION" srcip=10.151.143.4 srcport=50423 srcintf="port4" srcintfrole="lan" dstip=52.111.145.1 dstport=443 dstintf="port3" dstintfrole="undefined" srccountry="Reserved" dstinetsvc="Microsoft-Office365" dstcountry="United States" dstregion="California" dstcity="San Jose" dstreputation=5 sessionid=3673596551 proto=6 action="accept" policyid=10045 policytype="policy" poluuid="96f15028-15d6-51e9-6b81-d98bf1466b99" user="JULLOPEZ" authserver="FSSO_PSR" service="Microsoft-Office365" trandisp="snat" transip=199.68.152.135 transport=50423 appid=41468 app="Microsoft.Office.365.Portal" appcat="Collaboration" apprisk="elevated" applist="Edge-Prod-Block-Mode-P2P_PROXY" duration=30553 sentbyte=94401 rcvdbyte=112203 sentpkt=1052 rcvdpkt=1539 sentdelta=254 rcvddelta=230 May 19 16:26:00 10.150.160.13 date=2023-05-19 time=16:26:01 devname="fw1-test-lv-external" devid="ABC1K5DT918800482" eventtime=1684538762118706615 tz="-0700" logid="0000000020" type="traffic" subtype="forward" level="notice" vd="PRODUCTION" srcip=10.150.106.11 srcport=54254 srcintf="ABCTCORPO3.3052" srcintfrole="lan" dstip=17.188.143.10 dstport=443 dstintf="ABCTINTPO1.3053" dstintfrole="wan" srccountry="Reserved" dstcountry="United States" sessionid=513091673 proto=6 action="accept" policyid=83 policytype="policy" poluuid="2k2k2-b4c8-51e9-512e-62cf5b7e3bcd" policyname="Internal Server Nets Outbound" service="HTTPS" trandisp="snat" transip=38.70.139.3 transport=54254 appid=42662 app="Apple.Services" appcat="General.Interest" apprisk="elevated" applist="PROD-APPCTRL_LV-EXT" appact="detected" duration=686309 sentbyte=22070530 rcvdbyte=14199406 sentpkt=279649 rcvdpkt=148924 sentdelta=3600 rcvddelta=2352 srchwvendor="Cisco" devtype="Network" srcfamily="AP" osname="Cisco IOS" mastersrcmac="12:12:12:12:dc:27" srcmac="12:12:12:12:dc:27" srcserver=0 May 19 16:26:59 10.151.129.106 date=2023-05-19 time=16:27:00 devname="FW1-testPSR-DC" devid="ABCT3KD3Z17800305" eventtime=1684538820421783095 tz="-0700" logid="0000000013" type="traffic" subtype="forward" level="notice" vd="DataCenter" srcip=10.151.110.100 srcname="PSRPSOLAPP01.test.NET" identifier=2875 srcintf="Enterprise_ACI" srcintfrole="wan" dstip=10.132.116.4 dstname="10.132.116.4" dstintf="Enterprise" dstintfrole="lan" srccountry="Reserved" dstcountry="Reserved" sessionid=3796675657 proto=1 action="accept" policyid=10654 policytype="policy" poluuid="6ddcbe16-9058-51ec-2052-64e35cf6fddc" policyname="Solarwinds Catch-ALL" user="SVC-SOLARWINDS-IPAM" authserver="FSSO_PSR" service="PING" trandisp="noop" duration=60 sentbyte=59 rcvdbyte=59 sentpkt=1 rcvdpkt=1 appcat="unscanned" May 19 16:33:13 10.150.148.52 date=2023-05-19 time=16:33:14 devname="ABCZWPFWFTG-B" devid="ABCVM8V0000158159" eventtime=1684539194871377700 tz="-0700" logid="0000000013" type="traffic" subtype="forward" level="notice" vd="root" srcip=10.151.100.36 identifier=18877 srcintf="TUNNEL_SCH" srcintfrole="undefined" dstip=10.150.148.52 dstintf="port2" dstintfrole="lan" srccountry="Reserved" dstcountry="Reserved" sessionid=105443335 proto=1 action="accept" policyid=8 policytype="policy" poluuid="06d7ce0e-e8ae-51ed-b77f-59e907ddba86" policyname="test TO AZURE LAN" service="icmp/8/0" trandisp="noop" appid=24466 app="Ping" appcat="Network.Service" apprisk="elevated" applist="PROD-APPCTRL-AZURE" duration=60 sentbyte=84 rcvdbyte=84 sentpkt=1 rcvdpkt=1 vpn="TUNNEL_SCH" vpntype="ipsec-static" utmaction="allow" countapp=1 masterdstmac="12:12:12:12:9a:bc" dstmac="12:12:12:12:9a:bc" dstserver=1'; my $regex = qr/(?:^[A-Z][a-z]+\h+\d{1,2}\h+\d{2}:\d{2}:\d{2}\h+\d{1,3}(?:\.\d{1,3}){3}\b(?=.*?\btype="traffic")(?!.*\btype="utm")|\G(?!^))(?:(?!\h+(?:dev(?:name|id)|vd|src(?:ip|port|intf)|dst(?:ip|port|intf)|proto|action|policyid|user|service|transport|app(?:list)?|vpn(?:type)?)=)\h+\S+)*+\h*\K[^\s=]+=\S+/mp; if ( $str =~ /$regex/g ) { print "Whole match is ${^MATCH} and its start/end positions can be obtained via \$-[0] and \$+[0]\n"; # print "Capture Group 1 is $1 and its start/end positions can be obtained via \$-[1] and \$+[1]\n"; # print "Capture Group 2 is $2 ... and so on\n"; } # ${^POSTMATCH} and ${^PREMATCH} are also available with the use of '/p' # Named capture groups can be called via $+{name}

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 Perl, please visit: http://perldoc.perl.org/perlre.html