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

/
/
g

Test String

Code Generator

Language

Generated Code

re = /(?:<R((?:.*?\r?\n?)*)E>)/ str = 'set cli-parameters base 10 api brief enabled pager disabled <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <RESPONSE VERSION="L100"> <COMP G="0" P="1"/> <OBJECT basetype="status" name="status" oid="1"> <PROPERTY name="response-type" type="string">Success</PROPERTY> <PROPERTY name="response-type-numeric" type="string">0</PROPERTY> <PROPERTY name="response" type="string">Command completed successfully. - The settings were changed successfully. (2018-02-27 17:29:42)</PROPERTY> <PROPERTY name="return-code" type="sint32">0</PROPERTY> <PROPERTY name="component-id" type="string"></PROPERTY> <PROPERTY name="time-stamp" type="string">2018-02-27 17:29:42</PROPERTY> <PROPERTY name="time-stamp-numeric" type="string">1519752582</PROPERTY> </OBJECT> </RESPONSE> # show disks 1.1 <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <RESPONSE VERSION="L100"> <COMP G="0" P="1"/> <OBJECT basetype="drives" name="drive" oid="1" format="rows"> <PROPERTY name="durable-id" type="string">disk_1.1</PROPERTY> <PROPERTY name="enclosure-id" type="uint32">1</PROPERTY> <PROPERTY name="slot" type="uint32">1</PROPERTY> <PROPERTY name="location" key="true" type="string">1.1</PROPERTY> <PROPERTY name="port" type="uint32">0</PROPERTY> <PROPERTY name="scsi-id" type="uint32">0</PROPERTY> <PROPERTY name="blocks" blocksize="512" type="uint64">1172123568</PROPERTY> <PROPERTY name="serial-number" type="string">CZWWV6DN</PROPERTY> <PROPERTY name="vendor" type="string">HITACHI</PROPERTY> <PROPERTY name="model" type="string">HUS156060VLS600</PROPERTY> <PROPERTY name="revision" type="string">A5D0</PROPERTY> <PROPERTY name="state" type="string">FAILED</PROPERTY> <PROPERTY name="secondary-channel" type="uint32">1</PROPERTY> <PROPERTY name="container-index" type="uint32">0</PROPERTY> <PROPERTY name="member-index" type="uint32">0</PROPERTY> <PROPERTY name="type" type="string">SAS</PROPERTY> <PROPERTY name="type-numeric" type="string">4</PROPERTY> <PROPERTY name="pi-format" type="string">UNKN</PROPERTY> <PROPERTY name="pi-format-numeric" type="string">3</PROPERTY> <PROPERTY name="job-running" type="string"></PROPERTY> <PROPERTY name="job-running-numeric" type="string">0</PROPERTY> <PROPERTY name="blink" type="uint32">0</PROPERTY> <PROPERTY name="speed" type="uint32">0</PROPERTY> <PROPERTY name="lun" type="uint32">0</PROPERTY> <PROPERTY name="smart" type="string">Enabled</PROPERTY> <PROPERTY name="smart-numeric" type="string">1</PROPERTY> <PROPERTY name="dual-port" type="uint32">1</PROPERTY> <PROPERTY name="error" type="uint32">0</PROPERTY> <PROPERTY name="fc-p1-channel" type="uint32">0</PROPERTY> <PROPERTY name="fc-p1-device-id" type="uint32">0</PROPERTY> <PROPERTY name="fc-p1-node-wwn" type="string">5000cca0416aff98</PROPERTY> <PROPERTY name="fc-p1-port-wwn" type="string">0000000000000000</PROPERTY> <PROPERTY name="fc-p1-unit-number" type="uint32">0</PROPERTY> <PROPERTY name="fc-p2-channel" type="uint32">1</PROPERTY> <PROPERTY name="fc-p2-device-id" type="uint32">0</PROPERTY> <PROPERTY name="fc-p2-node-wwn" type="string"></PROPERTY> <PROPERTY name="fc-p2-port-wwn" type="string"></PROPERTY> <PROPERTY name="fc-p2-unit-number" type="uint32">0</PROPERTY> <PROPERTY name="drive-down-code" type="uint8">1</PROPERTY> <PROPERTY name="owner" type="string">A</PROPERTY> <PROPERTY name="owner-numeric" type="string">1</PROPERTY> <PROPERTY name="index" type="uint32">0</PROPERTY> <PROPERTY name="rpm" units="K" type="uint32">15</PROPERTY> <PROPERTY name="size" units="GB" type="string">600.1GB</PROPERTY> <PROPERTY name="size-numeric" units="blocks512" type="string">1172123568</PROPERTY> <PROPERTY name="transfer-rate" units="gbps" type="string">6.0</PROPERTY> <PROPERTY name="transfer-rate-numeric" units="gbps" type="string">19</PROPERTY> <PROPERTY name="attributes" type="string"></PROPERTY> <PROPERTY name="attributes-numeric" type="string">19</PROPERTY> <PROPERTY name="virtual-disk-serial" type="string"></PROPERTY> <PROPERTY name="enclosure-wwn" type="string">500c0ff01957bd3c</PROPERTY> <PROPERTY name="status" type="string">Up</PROPERTY> <PROPERTY name="usage" type="string">FAILED</PROPERTY> <PROPERTY name="operation" type="string">IDLE</PROPERTY> <PROPERTY name="led-status" type="string"> Fault</PROPERTY> <PROPERTY name="led-status-numeric" type="string">4</PROPERTY> <PROPERTY name="disk-dsd-count" type="uint32">1</PROPERTY> <PROPERTY name="number-of-ios" type="uint64">0</PROPERTY> <PROPERTY name="total-data-transferred" units="B" type="string">0B</PROPERTY> <PROPERTY name="total-data-transferred-numeric" type="string">0</PROPERTY> <PROPERTY name="avg-rsp-time" type="uint64">0</PROPERTY> <PROPERTY name="health" type="string">Fault</PROPERTY> <PROPERTY name="health-numeric" type="string">2</PROPERTY> <PROPERTY name="health-reason" type="string">Excessive media errors.</PROPERTY> <PROPERTY name="health-recommendation" type="string">- Replace the disk.</PROPERTY> </OBJECT> <COMP G="0" P="2"/> <OBJECT basetype="status" name="status" oid="2"> <PROPERTY name="response-type" type="string">Info</PROPERTY> <PROPERTY name="response-type-numeric" type="string">2</PROPERTY> <PROPERTY name="response" type="string">* Rates may vary. This is normal behavior. (2018-02-27 17:29:42)</PROPERTY> <PROPERTY name="return-code" type="sint32">0</PROPERTY> <PROPERTY name="component-id" type="string"></PROPERTY> <PROPERTY name="time-stamp" type="string">2018-02-27 17:29:42</PROPERTY> <PROPERTY name="time-stamp-numeric" type="string">1519752582</PROPERTY> </OBJECT> <COMP G="0" P="3"/> <OBJECT basetype="status" name="status" oid="3"> <PROPERTY name="response-type" type="string">Success</PROPERTY> <PROPERTY name="response-type-numeric" type="string">0</PROPERTY> <PROPERTY name="response" type="string">Command completed successfully. (2018-02-27 17:29:42)</PROPERTY> <PROPERTY name="return-code" type="sint32">0</PROPERTY> <PROPERTY name="component-id" type="string"></PROPERTY> <PROPERTY name="time-stamp" type="string">2018-02-27 17:29:42</PROPERTY> <PROPERTY name="time-stamp-numeric" type="string">1519752582</PROPERTY> </OBJECT> </RESPONSE>' # Print the match result str.scan(re) do |match| puts match.to_s end

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