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

const regex = new RegExp('.*\\((.|\\n)+\\)\\s*\\{', 'gm') const 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'] } } } } `; // Reset `lastIndex` if this regex is defined globally // regex.lastIndex = 0; let m; while ((m = regex.exec(str)) !== null) { // This is necessary to avoid infinite loops with zero-width matches if (m.index === regex.lastIndex) { regex.lastIndex++; } // The result can be accessed through the `m`-variable. m.forEach((match, groupIndex) => { console.log(`Found match, group ${groupIndex}: ${match}`); }); }

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 JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions