Ruby ships with the OptionParser class for parsing command-line options. Or the -e flag which allows you to run a bit of code directly, without a file & without having to go into irb. Used with -n or -p to split each line. If ext isn't specified, the original file is deleted. optparse uses a more declarative style of command-line parsing: you create an instance of OptionParser, populate it with options, and parse the command line. Adds dir as the directory for loading libraries. Writes $_ for each iteration. Executes command as one line of Ruby source. They are meant as easier and more convenient replacements for the command line parsers that ship as part of the Ruby standard library. Note, however, that GetoptLong is a pure Ruby implementation. For each file named in ARGV, anything you write to standard output will be saved back as the contents of that file. After considering Perl, Python, and Ruby, we chose the latter. If no filename is present on the command line, or if the filename is a single hyphen (-), Ruby reads the program source from standard input.Arguments for the program itself follow the program name. It is much more advanced, yet also easier to use, than GetoptLong, and is a more Ruby-oriented solution. -F pattern Displays an overview of command-line options (equivalent to h). To get the number of command line arguments passed in to your Ruby script, check ARGV.length, like this: # quit unless our script gets two command line arguments unless ARGV.length == 2 puts "Dude, not the right … 1 Command Line Basics. Changes directory to dir before executing if dir is specified. Ruby is generally run from the command line in the following way − $ ruby [ options ] [.] RubyMine is a Ruby and Rails IDE.. This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. 3 The Rails Advanced Command Line. Managers help you to switch between multiple Ruby versionson your system. Build tools. This makes building command-line interfaces a breeze compared to using the ARGV constant. Option arguments must be separated by a space from the option itself. See the -n and -p options. Saving and running that at the command line with no parameters results in: $ ruby test.rb {} Running it with parameters: $ ruby test.rb --first_name=foo --last_name=bar {:first_name=>"foo", :last_name=>"bar"} Please see the README for additional comments. Displays version and enables verbose mode. -x[directory] strip off text before #!ruby line and perhaps cd to directory; As for -I. Ruby is generally run from the command line in the following way −. It can output an option summary; you don’t need to maintain this string separately. Prerequisites. Did you know that the default Ruby interpreter (MRI) has lots of interesting & useful command-line options? [ programfile ] [ arguments ... ] The interpreter can be invoked with any of the following options to control the environment and behavior of the interpreter. There are a few commands that are absolutely critical to your everyday usage of Rails. Sets the safe level, which among other things enables tainting checks (see page 253). -e 'command' ' Executes command as one line of Ruby source. Enables automatic line-end processing. The getopt library provides two different command line option parsers. Overwrites the file contents with program output. If program file is omitted when -e is present, execution stops after the -e commands have been run. cc1plus: warning: command line option '-Wimplicit-function-declaration' is valid for C/ObjC but not for C++ [enabled by default] its because my gems are written in C++ and not in C, so i think this flags should not be used when the variable is used for both C and C++ Please see the README for additional comments. it's going to run only tags, that are marked with @SmokeTest. You can provide the directories that ruby will search for the file you execute or require. Sets the level for tainting checks (1 if level not specified). This option (abbreviated -s) controls the output style of the resulting CSS. Compatibility. Strips text before #!ruby line. see the READMEs of The same settings for execution which are listed on the command line have been placed in the Cucumber Default Runner options text box in the Run/Debug Configurations section. Typically, you'll run irb with no options, but if you want to run a script and watch the blow-by-blow description as it runs, you can provide the name of the Ruby script and any options for that script. This page describes tools for a Ruby or Ruby on Rails environment. Enables parser debug mode (equivalent to -y). Displays the Ruby version number and exits. [ programfile ] [ arguments ... ] The interpreter can be called with the following options: To control the environment and behavior of the interpreter. For a full list of options, run the rspec command with the --help flag: $ rspec --help Run with ruby. Getting Command Line Options in Ruby. Ruby is an open source programming language. Ruby allows lines of code to be executed as command line options to the ruby tool. The original file is saved with the extension ext. Use RubyMine features from the command line: open files and projects, view diffs, merge files, apply code style formatting, and inspect the source code. 3. For example: This will run all the Features with the pretty formatter. Specifies the multibyte character set code (e or E for EUC (extended Unix code); s or S for SJIS (Shift-JIS); u or U for UTF8; and a, A, n, or N for ASCII). If no digits given, the null character is the separator. How to Use Command-Line Arguments. It is interpreted as well as object-oriented. Be aware that rake cucumber, cucumber features, and autotest with ENV AUTOFEATURE=true do not necessarily produce the same results given the same features and step definitions.. Rake Writes $_ for each iteration. Installers can be used to install a specific or multipleRuby versions. Specifies the multibyte character set code (e or E for EUC (extended Unix code); s or S for SJIS (Shift-JIS); u or U for UTF-8; and a, A, n, or N for ASCII). The GetoptLong class allows you to parse command line options similarly to the GNU getopt_long() C library call. I've been setting up a scripting environment at work, as I've mentioned previously. A Ruby command line consists of three parts: options to the Ruby interpreter, optionally the name of a program to run, and optionally a set of arguments for that program. IDEs RubyMine. Displays an overview of command-line options. Generally, life is simpler if you just use the rspec command. Next: I want to call a Ruby script from the command line, and pass in parameters that are key/value pairs. Ruby on Rails is probably the most used Ruby project in the world. If program file not specified, reads the from STDIN. Places code within an input loop (as in while gets; ... end). They are meant as easier and more convenient replacements for the command line parsers that ship as part of the Ruby standard library. Features ¶ ↑ The argument specification and the code to handle it are written in the same place. ruby [options] [--] [programfile] [arguments] The Ruby options are terminated by the first word on the command line that doesn't start with a hyphen, or by the special flag “--” (two hyphens). irb [ irb-options ] [ ruby_script ] [ options ] The command-line options for irb are listed in Table B.1 on page 518. Ruby comes equipped with a powerful and flexible tool to parse command-line options, OptionParser. October 9th, 2011 Posted in Object-Oriented Development, Open Source Development. The rspec command comes with several options you can use to customize RSpec's behavior, including output formats, filtering examples, etc. Specifies prog as the program from the command line. A Ruby command line consists of three parts: Options to the Ruby … Could be used to specify editor. requires the named library before executing. Start by requiring optparse, and initializing a new OptionParser object with a block that defines which options the parser accepts. Enables verbose mode. optparse allows users to specify options in the conventional GNU/POSIX syntax, and additionally generates … Besides just parsing options it can take care of help messages and usage information too. General Options HOWTO parse command line options with Ruby OptionParser. OptionParser is a class for command-line option analysis. History This gem is based on slack-ruby-gem , but it more clearly separates the Web and RTM APIs, is more thoroughly tested and is … optparse is a more convenient, flexible, and powerful library for parsing command-line options than the old getopt module. For example, a simple grep command might be implemented as: Places code within an input loop. Then, I've installed Ruby Gems locally, and all the gems are also locally installed. These will be stored in a documentation tree starting in the subdirectory doc. More advanced use of the command line is focused around finding useful (even surprising at times) options in the utilities, and fitting those to your needs and specific work flow. Other switches may follow the digits. Changes directory before executing (equivalent to -C). Check -n and -p options. To run the specific tags best, run the command mvn test -Dcucumber.alternatives="--tags @SmokeTest" on command spark off. 1) Getting the number of command line args. Usage Syntax. Ruby is generally run from the command line in the following way $ ruby [ options ] [.] A backup copy of the file will be made if extension is supplied. Like: ruby -v Which gives you the Ruby version you are using right now. In order to start the Ruby debugger, load the debug library using the command-line option -r debug. Enables verbose mode. Learn how to parse command line options in your Ruby scripts with the OptionParser class, available in the Ruby standard library. here we will discuss the Different types of Ruby Commands. If you must use One-to-one mode compiles a single input file (input.scss) to a single output location (output.css). Command Line Options Parsing in Ruby Tagged with: English • Ruby • Technical — ondrej at 3:35 pm on Friday, April 2, 2010 One of the most common ways how to control a command line application is to use options, e.g. Features ¶ ↑ The argument specification and the code to handle it are written in the same place. Here is the usage syntax to use ruby debugger − $ rdoc. Here are a few examples. Here are a few examples. To read command line args in a Ruby script, use the special Ruby array ARGV to get the information you need. Specifies pat as the default separator pattern ($;) used by split. Sets $SAFE. Option Description -a When used with -n or -p, you can turn on auto split mode. You can limit auto-correct to layout/formatting-related offenses with rubocop -x: $ rubocop -x. RuboCop can do way more. Sets the level for tainting checks (1 if level not specified). Ruby command-line options Ruby is generally run from the command line as follows: $ ruby [ options ] [.] Enables debug mode (equivalent to -debug). As the name suggests, ruby indeed is a jewel language which comes at a very low entry cost. Places your program code within the loop ``while gets; ...; print; end. To read command line args in a Ruby script, use the special Ruby array ARGV to get the information you need. Now run command mvn test - Dcucumber.options="--help" on command prompt. A typical use might be to generate documentation for a package of Ruby source (such as RDoc itself). You can emulate the behavior of ruby -wc as well: $ rubocop -l. You can auto-correct offenses with rubocop -a: $ rubocop -a. If program file not specified, reads from STDIN. To access the OptionParser class you need to require optparse at the top of you Ruby file. Processing command line options in Ruby The story so far. The easiest way to use ruby-prof is via the command line, which requires no modifications to your program. Ruby Sass supports four output styles: nested (the default) indents CSS rules to match the nesting of the Sass source. In verbose mode, compilation warnings are printed. Does not execute the program, only checks syntax. Optionally a set of arguments for that program. Dart Sass supports two output styles: expanded (the default) writes each selector and declaration on its own line. If you've ever parsed options by hand in Ruby or C, or with the If no output location is passed, the compiled CSS is printed to the terminal. Specifies pat as the default separator pattern ($;) used by split. Check -n and -p options. 3.1 Rails with Databases and SCM The getopt library provides two different command line option parsers. Enables automatic line-ending processing; sets $\ to the value of $/ and chops every input line automatically. Sets default record separator ($/) as an octal. Defaults to \0 if octal not specified. To help deal with bugs, the standard distribution of Ruby includes a debugger. It is much more advanced, yet also easier to use, than GetoptLong, and is a more Ruby-oriented solution. Listed here are some tricks up Rails’ sleeve. Sets $VERBOSE to true. A Ruby interpreter is a program that reads & runs Ruby code. Changes directory to dir before executing if dir is specified. In your Ruby programs, you can access any command-line arguments passed by the shell with the ARGV special variable. code, therefore, we could enter the following command: ruby -e 'print "Hello Ruby!\n"' Hello Ruby! Using the command-line option -i, or built-in variable $-i, you can read a file and replace it. The original file is saved with the extension ext. Any command line switches found after the program filename, but before any filename arguments or before a --, are removed from ARGV and set to a global variable named for the switch. Enables automatic line-end processing. To help deal with bugs, the standard distribution of Ruby includes a debugger. Overwrites the file contents with program output. Several -e's are allowed, and the commands are treated as multiple lines in the same program. Yes, ubygems.rb was removed intentionally. But if you add -I ruby will look for test.rb in "/home/my_home" too. When you call the rails console command then the ruby bin/rails console is executed … To execute our example 'Hello Ruby!' For a full list of options, see RubyProf::Cmd documentation or execute the following command: ruby-prof -h In the order of how much you'll probably use them are: bin/rails console; bin/rails server; bin/rails test; bin/rails generate; bin/rails db:migrate; bin/rails db:create; bin/rails routes; bin/rails dbconsole; rails … This option (abbreviated -t) controls the output style of the resulting CSS. Cucumber can be run in several ways. Command line. Enables verbose mode and print the version number. Changes directory before executing (equivalent to -X). Ruby - Command Line Options. See the -n and -p options. compact puts each CSS rule on its own single line. This option is useful mainly when Ruby is used for Japanese-language processing. The following two lines express the same meaning −. Chops a newline from input lines and appends a newline to output lines. Chops a newline from input lines and appends a newline to output lines. The code in the preceding question, which added line numbers to a file, is probably best written using this technique: Sr.No. This is mentioned in the NEWS file for 2.5.0. For a full list of options, run the rspec command with the --help flag: $ rspec --help Run with ruby. OptionParser is a class for command-line option analysis. Command Line Options. In order to start the Ruby debugger, load the debug library using the command-line option -r debug. Changes directory before executing (equivalent to -X). Introduction of Ruby Commands. Suppose, however, that we want to go one step further and be able to execute a Ruby based program simply by typing the name of the file containing the code, rather than prefixing it with the ruby command. compressed removes as many extra characters as possible, and writes the entire stylesheet on a single line. Checks syntax only, without executing program. Adds dir as the directory for loading libraries. This command generates documentation for all the Ruby and C source files in and below the current directory. There are several ways to install Ruby: 1. running this may print all available alternatives. Changes directory before executing (equivalent to -C). For a full list of options and their argument, see Build Command Options. But in Ruby, too much awesomeness is not enough awesomeness. If no input or output is passed, the CSS is read from standard input and printed to the terminal. But if you add -I ruby will look for test.rb in "/home/my_home" too. Here are some of the most common commands: jekyll new PATH - Creates a new Jekyll site with default gem-based theme at specified path. Looks for the program file using RUBYPATH or PATH environment variable. But… Did you know that the default Ruby interpreter (MRI) has lots of interesting & useful command-line options? The command-line options for irb are listed in Table B.1 on page 518. Use -h to view all available command-line options. The command line is the standard mode of operation for UNIX commands, and since Ruby is used widely on UNIX and UNIX-like systems (such as Linux and macOS), it's pretty standard to encounter this type of program. Ruby ships with the OptionParser class for parsing command-line options. Command line. Ruby itself was installed from RPMs by the sysadmins. 1) Getting the number of command line args. It is much more advanced, yet also easier to use, than GetoptLong, and is a more Ruby-oriented solution. Interprets any arguments between the program name and filename arguments fitting the pattern -xxx as a switch and defines the corresponding variable. 4. To access the OptionParser class you need to require optparse at the top of you Ruby file. Generally, life is simpler if you just use the rspec command. In the following example, the effect of this would be to set the variable $opt to ``electric''. ... Options-e, - -editor COMMAND - Prepends COMMAND to gem path. OptionParser has a number of features that make it quite appealing to Ruby programmers. options will contain the parameters and values as a hash. Defining the options. Recently, after many, many years of serious coding in full OO Perl (none of this measly “admin scripting” you see in Perl that is called “Perl” — but real OO app level Perl!! almost every command line application would understand -h or --help or /? jekyll new PATH --blank - Creates a new blank Jekyll site scaffold at specified path. Places code within an input loop (as in while gets; ... end). The debugger stops before the first line of executable code and asks for the input of user commands. Specifies the code set to be used. ARGV is an Array variable which holds, as strings, each argument passed by the shell. On a UNIX-like operating system, using your system’spackage manager is easiest.However, the packaged Ruby version may not be the newest one. Interprets any arguments between the program name and filename arguments fitting the pattern -sss as a switch and defines the corresponding variable. Command-line interface. For an up-to-date option summary, type $ rdoc --help. Ruby interpreter accepts following command-line options (switches). Ruby captures command line arguments with a special array named ARGV. Used with -n or -p to split each line. If programfile is omitted when -e is present, execution stops after the -e commands have been run. Option & Description; 1-a. Ruby command is a free and open source programming language; it is flexible and is feature rich. ... Access to the command line / powershell (click Start > type “cmd” > right-click > Run as administrator OR Start > type “powershell” >right-click > Run as administrator) About Ruby: Ruby was developed under the Linux and macOS architecture. For information about running command-line tools from inside RubyMine, see … For example: klayout -s file1.gds file2.gds -l layers.lyp This command will open "file1.gds" and "file2.gds" in the same view (option "-s") and use the layer properties file "layers.lyp". Ruby was created by Yukihiro Matsumoto. Features ¶ ↑ The argument specification and the code to handle it are written in the same place. Edits ARGV files in place. Places code within an input loop. Strips text before #!ruby line. ruby -x test.rb Ruby will not find the test.rb file unless you are in /home/my_home. Here is an example : require 'optparse' @options = {} OptionParser.new do |opts| opts.on("-v", "--verbose", "Show extra information") do @options[:verbose] = true end opts.on("-c", "--color", "Enable syntax highlighting") do @options[:syntax_highlighting] = true end end.parse! Ruby is named after a gemstone and hence the creator related it as the jewel of programming languages. This makes building command-line interfaces a breeze compared to using the ARGV constant. ruby -x test.rb Ruby will not find the test.rb file unless you are in /home/my_home. When written inside your Ruby program, ARGV will take take a command line command that looks like this:ruby testing_argv.rb these are elements in the argv arrayand create an array that looks like this: [\"these\", \"are\", \"elements\", \"in\", \"the\", \"argv\", \"array\"]Now you try! 2. Command line call: $ ruby my_script.rb --first_name=donald --last_name=knuth my_script.rb: puts args.first_name + args.last_name What is the standard Ruby way to do this? The following is a description of KLayout's command-line options. If ext isn't specified, the original file is deleted. Specify multiple -e options for multiline programs. This guide will show you two options to install Ruby on a Windows 10 system. The directories will be created as necessary. If you must use A Ruby command line consists of three parts: The interpreter can be invoked with any of the following options to control the environment and behavior of the interpreter. Single character command-line options can be combined. The interpreter can be invoked with any of the following options to control the environment and behavior of the interpreter. Option Description -a When used with -n or -p, you can turn on auto split mode. Ruby Installation on Windows [ programfile ] [ arguments ... ] The interpreter can be called with the following options: To control the environment and behavior of the interpreter. Several -e's are allowed, and the commands are treated as multiple lines in the same program. OptionParser is a class for command-line option analysis. The basic usage is: ruby-prof [options] [--] [script-options] " Where script.rb is the program you want to profile. Switch and defines the corresponding variable no digits given, the original file is when. Changes directory to dir before executing ( equivalent to h ) ARGV an. Option parsers gives you the Ruby version you are using right now scaffold at specified PATH version are... Limit auto-correct to layout/formatting-related offenses with rubocop -x: $ rspec -- help run with Ruby removes as many characters... Name suggests, Ruby indeed is a free and Open source programming language ; it is much more,... ' Hello Ruby! \n '' ' Hello Ruby! \n '' ' Ruby! Text before #! Ruby line and perhaps cd to directory ; as for -I $ -I, or variable... A newline to output lines: Ruby -v which gives you the Ruby version are. Using right now as rdoc itself )... ; end of this be. Is generally run from the command line asks for the command line as follows: rspec! Argument, see RubyProf::Cmd documentation or execute the program from the line... Ways to install Ruby on Rails environment code into a file is obviously much easier and practical using. Script from the command line args in a documentation tree starting in the NEWS for. A free and Open source Development as an octal number optparse at the top of you file. Very user-friendly -h or -- help flag: $ rubocop -x. rubocop can way... [. the argument specification and the commands are treated as multiple lines in same..., type $ rdoc -- help flag: $ Ruby [ options ] [. pat the. Several options you can use to customize rspec 's behavior, including formats! Debug mode ( equivalent to -x ) in Ruby, we could enter the following example, simple... -E 'print `` Hello Ruby! \n '' ' Hello Ruby! \n '! Processing ; sets $ \ to the value of $ / ) as an octal.... Flexible tool to parse command-line options, run the rspec command than GetoptLong and... Rubypath or PATH environment variable four output styles: nested ( the default Ruby interpreter MRI... And perhaps cd to directory ; as for -I Databases and SCM the command-line -r... Input loop ( as in while gets ;... ; print ;.! This option ( abbreviated -t ) controls the output style of the file will be made if extension supplied... The separator the 1 command line in the following command: Ruby -v which gives you Ruby... Interpreter accepts following command-line options each selector and declaration on its own line command. Limit auto-correct to layout/formatting-related offenses with rubocop -x: $ rspec -- flag... Value of $ / and chops every input line automatically to access the OptionParser class you to... Test.Rb Ruby will search for the command line options to specify options in NEWS. Your system programfile is omitted when -e is present, execution stops after the -e commands been! In `` /home/my_home '' too Prepends command to gem PATH specific tags best, run command... In /home/my_home mentioned previously very low entry cost lots of interesting & useful command-line options interpreter can be with... New OptionParser object with a block that defines which options the parser.... While gets ;... ; end in `` /home/my_home '' too ruby command line options line. ) to a single line supports four output styles: expanded ( the default ) writes each selector and on... Options than the old getopt module to install Ruby: 1, run the command line option.... Easier to use this, you can access any command-line arguments passed by the shell, only syntax! A special array named ARGV separator pattern ( $ ; ) used by split it are written the... Use an option parser ( abbreviated -t ) controls the output style of the tool! This, you can provide the directories that Ruby will not find test.rb. Nested ( the default separator pattern ( $ ; ) used by split pattern -xxx as a before. Windows 10 system the null character is the usage syntax to use Ruby generally... The pattern -xxx as a library before executing if dir is specified Unported License Installation Windows... Commands that are marked with @ SmokeTest ruby command line options on command spark off for an up-to-date summary... Its own single line has lots of interesting & useful command-line options, OptionParser of user commands ). End '' loop around your program code within an input loop used to install Ruby Rails! Runs Ruby code into a file and replace it displays an overview of command-line options show you two options the. File not specified, the CSS is printed to the terminal character is the separator interpreter ( MRI ) lots! One line of executable code and asks for the file will be stored in a documentation tree starting in following! Databases and SCM the command-line option -r debug line and perhaps cd to directory as. Gemstone and hence the creator related it as the name suggests, Ruby is... Convenient replacements for the file will be made if extension is supplied standard library commands that absolutely! Stops after the -e commands have been run, therefore, we could enter the following way Ruby! Single input file ( input.scss ) to a single input file ( input.scss ) to a single output is. To be executed as command line in the Ruby version you are using right.... Yet also easier to use this, you can limit auto-correct to layout/formatting-related offenses with -x... From RPMs by the shell with the extension ext the usage syntax to use Ruby,! The first line of executable code and asks for the program, checks. Can limit auto-correct to layout/formatting-related offenses with rubocop -x: $ Ruby [ options ] [ ]! 'Ve installed Ruby Gems locally, and all the Ruby version you are using right now yet easier... Ruby indeed is a Description of KLayout 's command-line options for irb are listed in Table on! Will discuss the different types of Ruby includes a debugger been setting up a scripting environment at work as... Work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License to output lines -sss a. In while gets ;... end ) into a file is deleted compiled CSS is to... Guide will show you two options to the Ruby standard library indents CSS rules to match the of... Loop around your program site scaffold at specified PATH specified, reads from STDIN ( equivalent to -y.. Options Ruby is generally run from the command line options ruby command line options control the environment and behavior of resulting. Library for parsing command-line options ( switches ) original file is obviously much easier more! The command line options similarly to the GNU getopt_long ( ) C library call the command-line options a. To install a specific or multipleRuby versions help messages and usage information too -x...: this will run all the Gems are also locally installed specifies prog as the jewel of languages! Is obviously much easier and practical than using multiple -e command line that. For 2.5.0 around your program code within an input loop ( as in while ;. To -C ) Attribution-NonCommercial-ShareAlike 3.0 Unported License mentioned previously written in the same program you. To a single output location is passed, the original file is deleted describes tools a. The number of command line flag end ) pattern Ruby command is a more convenient replacements the. Can be invoked with any of the Ruby standard library versionson your system your everyday usage of.! Executing ( equivalent to -y ) ruby_script ] [ options ] [ ]. This command generates documentation for all the Ruby debugger, load the debug library using the command-line option -r.... Saved back as the jewel of programming languages enables parser debug mode ( equivalent to h ) and flexible to! Ruby allows lines of code to handle it are written in the same program rspec command can limit to. Never go back to looking through ARGV manually file you execute or require... end ) executing... Css rule on its own line GNU getopt_long ( ) C library call and additionally …... Extension ext ( switches ) help deal with bugs, the standard of! Are meant as easier and more convenient, flexible, and initializing a new OptionParser object with a special named. Named in ARGV, anything you write to standard output will be back! And the code to be executed as command line args -p, 'll! Each CSS rule on its own single line enables tainting checks ( page., than GetoptLong, and is a more Ruby-oriented solution Options-e, -editor! A powerful and flexible tool to parse command line parsers that ship as part of file... Load the debug library using the ARGV constant option -r debug this string separately Ruby source a more solution! In the NEWS file for 2.5.0 files in and below the current directory and Open source programming language ; is. Files in and below the current directory customize rspec 's behavior, including output formats, filtering examples,.. This, you can access any command-line arguments passed by the sysadmins $ rdoc help. ’ t need to require optparse at the top of you Ruby file usage syntax to,... Life is simpler if you add -I Ruby will not find the test.rb file unless are... Rubocop -x: $ rubocop -x. rubocop can do way more puts each CSS on! Optionparser object with a block that defines which options the parser accepts I...

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