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

/
/
gmi

Test String

Code Generator

Language

Generated Code

# coding=utf8 # the above tag defines encoding for this document and is for Python 2.x compatibility import re regex = r"([-]+[Uu](sername|ser|SERNAME|SER)?\s+[^\s]+\s[-]+[Pp](ass|assword|ASS|ASSWORD)?\s([\"\'])?)([^\s\"\']+)" test_str = ("type=EXECVE msg=audit(02/15/2023 06:35:15.151:7925) : argc=3 a0=sh a1=-c a2=echo -n <password> | adcli join --login-user=SVC-QCPAWS-DJOIN --stdin-password --domain-ou=OU=01,OU=A833,OU=AMS04,OU=Prod,DC=qcpaws,DC=qantas,DC=com,DC=au --domain=qcpaws.qantas.com.au\n\n" "type=EXECVE msg=audit(03/15/2023 01:53:22.518:13273) : argc=3 a0=sh a1=-c a2=echo <password> | realm --unattended join -U SVC-QCPAWS-DJOIN --computer-ou=OU=04,OU=A868,OU=AMS04,OU=Prod,DC=qcpaws,DC=qantas,DC=com,DC=au qcpaws.qantas.com.au\n\n" "type=PROCTITLE msg=audit(03/15/2023 01:53:22.541:13274) : proctitle=sh -c echo <password> | realm --unattended join -U SVC-QCPAWS-DJOIN --computer-ou=OU=04,OU=A868,OU=AMS04,OU=Prod,DC=qcpaws\n\n" "type=PROCTITLE msg=audit(03/15/2023 01:53:22.541:13274) : proctitle=sh -c echo <password> | realm --unattended join -U SVC-QCPAWS-DJOIN --computer-ou=OU=04,OU=A868,OU=AMS04,OU=Prod,DC=qcpaws\n\n\n\n" "([-]+[Uu](sername)?\\s+[^\\s]+\\s[-]+[Pp](assword)?\\s([\\\"\\'])?)([^\\s\\\"\\']+)\n" "--------------\n" "type=EXECVE msg=audit(03/15/2023 01:53:24.855:10436) : argc=3 a0=sh a1=-c a2=centrify_add_to_linux_servers_group -u SVC-QCPAWS-DJOIN -PASSWORD '<password>'\n\n" "type=EXECVE msg=audit(03/15/2023 01:52:28.060:7413) : argc=3 a0=sh a1=-c a2=adjoin qcpaws.qantas.com.au -z AWS -c ou=43,ou=a868,ou=ams04,ou=Prod -u SVC-QCPAWS-DJOIN@qcpaws.qantas.com.au -p '<password>'\n\n" "type=EXECVE msg=audit(03/10/2023 04:35:22.652:7437) : argc=3 a0=sh a1=-c a2=adjoin qcpaws.qantas.com.au -z AWS -c ou=43,ou=a868,ou=ams04,ou=Prod -u @qcpaws.qantas.com.au -p '<password>'\n\n" "type=PROCTITLE msg=audit(03/15/2023 01:53:24.921:10443) : proctitle=sh -c centrify_add_to_linux_servers_group -u SVC-QCPAWS-DJOIN -p '<password>'\n\n" "type=PROCTITLE msg=audit(03/15/2023 01:52:29.415:8284) : proctitle=sh -c adjoin qcpaws.qantas.com.au -z AWS -c ou=43,ou=a868,ou=ams04,ou=Prod -u SVC-QCPAWS-DJOIN@qcpaws.qantas.com.au -p '<password>\n\n" "type=PROCTITLE msg=audit(03/10/2023 04:35:22.772:7480) : proctitle=sh -c adjoin qcpaws.qantas.com.au -z AWS -c ou=43,ou=a868,ou=ams04,ou=Prod -u @qcpaws.qantas.com.au -p '<password>'\n\n\n" "-------\n" "a\\d+=[\\-]+[Pp](assword)? a\\d+=[\\\"\\']*([^\\\"\\'\\s]+)\n\n" "type=EXECVE msg=audit(03/15/2023 00:21:55.888:10474) : argc=6 a0=/usr/share/centrifydc/libexec/adedit a1=/bin/centrify_add_to_linux_servers_group a2=-u a3=SVC-QCPAWS-DJOIN a4=-p a5=<password>\n\n" "type=EXECVE msg=audit(03/15/2023 00:21:55.884:10471) : argc=7 a0=/bin/sh a1=/usr/bin/adedit a2=/bin/centrify_add_to_linux_servers_group a3=-u a4=SVC-QCPAWS-DJOIN a5=-p a6=<password>\n\n" "type=EXECVE msg=audit(03/15/2023 00:31:32.764:6427) : argc=11 a0=/bin/sh a1=/usr/sbin/adjoin a2=qcpaws.qantas.com.au a3=-z a4=AWS a5=-c a6=ou=53,ou=a243,ou=ams02,ou=Prod a7=-u a8=SVC-QCPAWS-DJOIN@qcpaws.qantas.com.au a9=-p a10=<password>\n\n" "type=EXECVE msg=audit(03/15/2023 01:52:28.070:7418) : argc=10 a0=/usr/share/centrifydc/libexec/adjoin a1=qcpaws.qantas.com.au a2=-z a3=AWS a4=-c a5=ou=43,ou=a868,ou=ams04,ou=Prod a6=-u a7=SVC-QCPAWS-DJOIN@qcpaws.qantas.com.au a8=--password a9=<password>\n\n" "type=EXECVE msg=audit(03/15/2023 01:38:28.974:8889) : argc=6 a0=/usr/share/centrifydc/libexec/adedit a1=/usr/bin/centrify_add_to_linux_servers_group a2=-u a3=SVC-QCPAWS-DJOIN a4=-p a5=<password>\n\n" "type=EXECVE msg=audit(03/15/2023 01:53:24.864:10441) : argc=6 a0=/usr/share/centrifydc/libexec/adedit a1=/bin/centrify_add_to_linux_servers_group a2=-u a3=SVC-QCPAWS-DJOIN a4=-p a5=<password>\n\n" "type=EXECVE msg=audit(03/15/2023 01:52:28.065:7415) : argc=11 a0=/bin/sh a1=/usr/sbin/adjoin a2=qcpaws.qantas.com.au a3=-z a4=AWS a5=-c a6=ou=43,ou=a868,ou=ams04,ou=Prod a7=-u a8=SVC-QCPAWS-DJOIN@qcpaws.qantas.com.au a9=-p a10=<password>\n\n" "type=EXECVE msg=audit(03/15/2023 01:38:28.970:8886) : argc=7 a0=/bin/sh a1=/usr/bin/adedit a2=/usr/bin/centrify_add_to_linux_servers_group a3=-u a4=SVC-QCPAWS-DJOIN a5=-p a6=<password>\n\n" "type=EXECVE msg=audit(03/15/2023 01:53:24.860:10438) : argc=7 a0=/bin/sh a1=/usr/bin/adedit a2=/bin/centrify_add_to_linux_servers_group a3=-u a4=SVC-QCPAWS-DJOIN a5=-p a6=<password>\n\n") matches = re.finditer(regex, test_str, re.MULTILINE | re.IGNORECASE) for matchNum, match in enumerate(matches, start=1): print ("Match {matchNum} was found at {start}-{end}: {match}".format(matchNum = matchNum, start = match.start(), end = match.end(), match = match.group())) for groupNum in range(0, len(match.groups())): groupNum = groupNum + 1 print ("Group {groupNum} found at {start}-{end}: {group}".format(groupNum = groupNum, start = match.start(groupNum), end = match.end(groupNum), group = match.group(groupNum))) # Note: for Python 2.7 compatibility, use ur"" to prefix the regex and u"" to prefix the test string and substitution.

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 Python, please visit: https://docs.python.org/3/library/re.html