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

r"
"
gsm

Test String

Code Generator

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?sm)([A-Z][a-z]{2} [A-Z][a-z]{2} \d{2} \d{2}:\d{2}:\d{2} CET \d{4})\n(/dev.*?) ==> (.*?)\n.*?\n(\d*) bytes .*? copied, (.*?) s, (.*?) (.*?s\n)(.*?)Exit status: (\d*)\n" Local $sString = "Thu Feb 11 15:01:37 CET 2021" & @CRLF & _ "/dev/mapper/vgdata-euramis_u000 ==> /ec/prod/server/euramis/u000" & @CRLF & _ "1+0 records in" & @CRLF & _ "1+0 records out" & @CRLF & _ "512 bytes (512 B) copied, 0.00383015 s, 134 kB/s" & @CRLF & _ " Command being timed: "dd if=/dev/zero of=/ec/prod/server/euramis/u000/TstPerf/test_512_1 bs=512 count=1 oflag=dsync"" & @CRLF & _ " User time (seconds): 0.00" & @CRLF & _ " System time (seconds): 0.00" & @CRLF & _ " Percent of CPU this job got: 25%" & @CRLF & _ " Elapsed (wall clock) time (h:mm:ss or m:ss): 0:00.00" & @CRLF & _ " Average shared text size (kbytes): 0" & @CRLF & _ " Average unshared data size (kbytes): 0" & @CRLF & _ " Average stack size (kbytes): 0" & @CRLF & _ " Average total size (kbytes): 0" & @CRLF & _ " Maximum resident set size (kbytes): 812" & @CRLF & _ " Average resident set size (kbytes): 0" & @CRLF & _ " Major (requiring I/O) page faults: 0" & @CRLF & _ " Minor (reclaiming a frame) page faults: 252" & @CRLF & _ " Voluntary context switches: 4" & @CRLF & _ " Involuntary context switches: 1" & @CRLF & _ " Swaps: 0" & @CRLF & _ " File system inputs: 0" & @CRLF & _ " File system outputs: 8" & @CRLF & _ " Socket messages sent: 0" & @CRLF & _ " Socket messages received: 0" & @CRLF & _ " Signals delivered: 0" & @CRLF & _ " Page size (bytes): 4096" & @CRLF & _ " Exit status: 0" & @CRLF & _ "Thu Feb 11 16:02:17 CET 2021" & @CRLF & _ "/dev/mapper/vgdata-euramis_u000 ==> /ec/prod/server/euramis/u000" & @CRLF & _ "1+0 records in" & @CRLF & _ "1+0 records out" & @CRLF & _ "512 bytes (512 B) copied, 0.00275458 s, 186 kB/s" & @CRLF & _ " Command being timed: "dd if=/dev/zero of=/ec/prod/server/euramis/u000/TstPerf/test_512_1 bs=512 count=1 oflag=dsync"" & @CRLF & _ " User time (seconds): 0.00" & @CRLF & _ " System time (seconds): 0.00" & @CRLF & _ " Percent of CPU this job got: 33%" & @CRLF & _ " Elapsed (wall clock) time (h:mm:ss or m:ss): 0:00.00" & @CRLF & _ " Average shared text size (kbytes): 0" & @CRLF & _ " Average unshared data size (kbytes): 0" & @CRLF & _ " Average stack size (kbytes): 0" & @CRLF & _ " Average total size (kbytes): 0" & @CRLF & _ " Maximum resident set size (kbytes): 816" & @CRLF & _ " Average resident set size (kbytes): 0" & @CRLF & _ " Major (requiring I/O) page faults: 0" & @CRLF & _ " Minor (reclaiming a frame) page faults: 253" & @CRLF & _ " Voluntary context switches: 4" & @CRLF & _ " Involuntary context switches: 1" & @CRLF & _ " Swaps: 0" & @CRLF & _ " File system inputs: 0" & @CRLF & _ " File system outputs: 8" & @CRLF & _ " Socket messages sent: 0" & @CRLF & _ " Socket messages received: 0" & @CRLF & _ " Signals delivered: 0" & @CRLF & _ " Page size (bytes): 4096" & @CRLF & _ " Exit status: 0" & @CRLF & _ "Thu Feb 11 17:02:26 CET 2021" & @CRLF & _ "/dev/mapper/vgdata-euramis_u000 ==> /ec/prod/server/euramis/u000" & @CRLF & _ "1+0 records in" & @CRLF & _ "1+0 records out" & @CRLF & _ "512 bytes (512 B) copied, 0.00323523 s, 158 kB/s" & @CRLF & _ " Command being timed: "dd if=/dev/zero of=/ec/prod/server/euramis/u000/TstPerf/test_512_1 bs=512 count=1 oflag=dsync"" & @CRLF & _ " User time (seconds): 0.00" & @CRLF & _ " System time (seconds): 0.00" & @CRLF & _ " Percent of CPU this job got: 25%" & @CRLF & _ " Elapsed (wall clock) time (h:mm:ss or m:ss): 0:00.00" & @CRLF & _ " Average shared text size (kbytes): 0" & @CRLF & _ " Average unshared data size (kbytes): 0" & @CRLF & _ " Average stack size (kbytes): 0" & @CRLF & _ " Average total size (kbytes): 0" & @CRLF & _ " Maximum resident set size (kbytes): 820" & @CRLF & _ " Average resident set size (kbytes): 0" & @CRLF & _ " Major (requiring I/O) page faults: 0" & @CRLF & _ " Minor (reclaiming a frame) page faults: 252" & @CRLF & _ " Voluntary context switches: 4" & @CRLF & _ " Involuntary context switches: 1" & @CRLF & _ " Swaps: 0" & @CRLF & _ " File system inputs: 0" & @CRLF & _ " File system outputs: 8" & @CRLF & _ " Socket messages sent: 0" & @CRLF & _ " Socket messages received: 0" & @CRLF & _ " Signals delivered: 0" & @CRLF & _ " Page size (bytes): 4096" & @CRLF & _ " Exit status: 0" & @CRLF & _ "" Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH) Local $aFullArray[0] For $i = 0 To UBound($aArray) -1 _ArrayConcatenate($aFullArray, $aArray[$i]) Next $aArray = $aFullArray ; Present the entire match result _ArrayDisplay($aArray, "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 AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm