Regular Expressions 101

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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
  • Match everything enclosed
    (?:...)
  • Capture everything enclosed
    (...)
  • 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 = '# @summary Manages the puppeteer monitor service. # # @param logon_domain # The service will logon using this domain. Specify \'.\' for a local account. # # @param logon_name # The service will logon using this user name. # # @param logon_password # The service will logon using this password. # # @param ensure # Whether or not install the puppeteermon service. # # @param source # Where to obtain the puppeteermon service executable from. # # @param state # Ensure the puppeteermon service is in the given `state`. # # @param startup # How to start the puppeteermon service. # # @param version # The version of the puppeteermon service that should be installed. # class profile::ct::puppeteermon( String $logon_domain = "${hiera(\'builder_domain\', \'.\')}", String $logon_name = "${hiera(\'builder_user\', \'SYSTEM\')}", String $logon_password = "${hiera(\'builder_passwd\', \'\')}", String $cooldown = \'10m\', String $min_exec_time = \'1m15s\', Enum[absent, present] $ensure = present, String $source = \'https://repo.ct.activision.com/repository/puppet/puppeteermon/<%= ::osfamily %>/puppeteermon-<%= version %>\', Enum[\'running\', \'stopped\'] $state = \'running\', Enum[\'automatic\', \'manual\', \'disabled\'] $startup = \'automatic\', String $version = \'2.0.11\', ) { include profile::ct::puppeteer if $::osfamily == \'windows\' { # Non-configurable class parameters $basedir = \'C:/ProgramData/puppeteermon\' $os_source = regsubst($source, \'<%= ::osfamily %>\', \'windows\', \'G\') $puppeteer_os_source = regsubst($profile::ct::puppeteer::source, \'<%= ::osfamily %>\', \'windows\', \'G\') $puppeteer_fetch_source = regsubst($puppeteer_os_source, \'<%= version %>\', "${profile::ct::puppeteer::version}.exe", \'G\') $puppeteer_recovery_source = regsubst($puppeteer_os_source, \'<%= version %>\', \'recovery.exe\', \'G\') profile::ct::puppeteer::config { "${profile::ct::puppeteer::basedir}/puppeteer.conf": ensure => $ensure, compass_master_url => $profile::ct::puppeteer::compass_master_url, runinterval => $profile::ct::puppeteer::runinterval, splay => $profile::ct::puppeteer::splay, version => $profile::ct::puppeteer::version, } -> profile::ct::puppeteermon::config { "${basedir}/puppeteermon.conf": ensure => $ensure, cooldown => $cooldown, fetch_url => $puppeteer_fetch_source, download_dir => "${profile::ct::puppeteer::basedir}/fetch", command => "${profile::ct::puppeteer::basedir}/running/puppeteer.exe", } profile::ct::puppeteer::config_new { "${profile::ct::puppeteer::basedir}/puppeteer.yaml": ensure => $ensure, compass_master_url => $profile::ct::puppeteer::compass_master_url, compass_polling_interval => $profile::ct::puppeteer::compass_polling_interval, runinterval => $profile::ct::puppeteer::runinterval, last_run_summary => $profile::ct::puppeteer::last_run_summary, splay => $profile::ct::puppeteer::splay, version => $profile::ct::puppeteer::version, agent_config_platform => $profile::ct::puppeteer::agent_config_platform, } -> profile::ct::puppeteermon::config_new { "${basedir}/puppeteermon.yaml": ensure => $ensure, cooldown => $cooldown, fetch_url => $puppeteer_fetch_source, recovery_url => $puppeteer_recovery_source, download_dir => "${profile::ct::puppeteer::basedir}/stage", command => "${profile::ct::puppeteer::basedir}/running/puppeteer.exe", min_exec_time => $min_exec_time } -> wservice { \'puppeteermon\': ensure => $ensure, state => $state, startup => $startup, source => regsubst($os_source, \'<%= version %>\', "${version}.tar.gz", \'G\'), version => $version, path => "${basedir}/puppeteermon.exe", account => "${logon_domain}\\\\${logon_name}", password => $logon_password, registercmd => [\'<%= path %>\', \'install\'], unregistercmd => [\'<%= path %>\', \'uninstall\'], } if $ensure == present { $enable = $startup ? { \'automatic\' => \'true\', \'manual\' => \'manual\', default => \'false\' } service { \'puppeteermon\': ensure => $state, enable => $enable, require => Wservice[\'puppeteermon\'] } } } elsif $::osfamily == \'Darwin\' { # Non-configurable class parameters $basedir = \'/opt/puppeteermon\' $os_source = regsubst($source, \'<%= ::osfamily %>\', \'darwin\', \'G\') $puppeteer_os_source = regsubst($profile::ct::puppeteer::source, \'<%= ::osfamily %>\', \'darwin\', \'G\') $puppeteer_fetch_source = regsubst($puppeteer_os_source, \'<%= version %>\', $profile::ct::puppeteer::version, \'G\') $puppeteer_recovery_source = regsubst($puppeteer_os_source, \'<%= version %>\', \'recovery\', \'G\') profile::ct::puppeteer::config_new { "${profile::ct::puppeteer::basedir}/puppeteer.yaml": ensure => $ensure, compass_master_url => $profile::ct::puppeteer::compass_master_url, compass_polling_interval => $profile::ct::puppeteer::compass_polling_interval, runinterval => $profile::ct::puppeteer::runinterval, last_run_summary => $profile::ct::puppeteer::last_run_summary, splay => $profile::ct::puppeteer::splay, version => $profile::ct::puppeteer::version, agent_config_platform => $profile::ct::puppeteer::agent_config_platform, } -> profile::ct::puppeteermon::config_new { "${basedir}/puppeteermon.yaml": ensure => $ensure, cooldown => $cooldown, fetch_url => $puppeteer_fetch_source, recovery_url => $puppeteer_recovery_source, download_dir => "${profile::ct::puppeteer::basedir}/stage", command => "${profile::ct::puppeteer::basedir}/running/puppeteer", min_exec_time => $min_exec_time } -> puppeteermon { \'/opt/puppeteermon/puppeteermon\': ensure => $ensure, version => $version, source => regsubst($os_source, \'<%= version %>\', $version, \'G\'), } if $ensure == present { $enable = $startup ? {\'automatic\' => \'true\', \'manual\' => \'manual\', default => \'false\' } service { \'puppeteermon\': ensure => $state, enable => $enable, provider => \'launchd\', require => Puppeteermon[\'/opt/puppeteermon/puppeteermon\'] } } } else { # Non-configurable class parameters $basedir = \'/opt/puppeteermon\' $os_source = regsubst($source, \'<%= ::osfamily %>\', \'linux\', \'G\') $puppeteer_os_source = regsubst($profile::ct::puppeteer::source, \'<%= ::osfamily %>\', \'linux\', \'G\') $puppeteer_fetch_source = regsubst($puppeteer_os_source, \'<%= version %>\', $profile::ct::puppeteer::version, \'G\') $puppeteer_recovery_source = regsubst($puppeteer_os_source, \'<%= version %>\', \'recovery\', \'G\') profile::ct::puppeteer::config_new { "${profile::ct::puppeteer::basedir}/puppeteer.yaml": ensure => $ensure, compass_master_url => $profile::ct::puppeteer::compass_master_url, compass_polling_interval => $profile::ct::puppeteer::compass_polling_interval, runinterval => $profile::ct::puppeteer::runinterval, last_run_summary => $profile::ct::puppeteer::last_run_summary, splay => $profile::ct::puppeteer::splay, version => $profile::ct::puppeteer::version, agent_config_platform => $profile::ct::puppeteer::agent_config_platform, } -> profile::ct::puppeteermon::config_new { "${basedir}/puppeteermon.yaml": ensure => $ensure, cooldown => $cooldown, fetch_url => $puppeteer_fetch_source, recovery_url => $puppeteer_recovery_source, download_dir => "${profile::ct::puppeteer::basedir}/stage", command => "${profile::ct::puppeteer::basedir}/running/puppeteer", min_exec_time => $min_exec_time } -> puppeteermon { \'/opt/puppeteermon/puppeteermon\': ensure => $ensure, version => $version, source => regsubst($os_source, \'<%= version %>\', $version, \'G\'), } if $ensure == present { $enable = $startup ? {\'automatic\' => \'true\', \'manual\' => \'manual\', default => \'false\' } service { \'puppeteermon\': ensure => $state, enable => $enable, provider => \'systemd\', require => Puppeteermon[\'/opt/puppeteermon/puppeteermon\'] } } } } '; my $regex = qr`.*\((.|\n)+\)\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