Ruby string as file

How do I open the Ruby console? If you're using macOS open up Terminal and type irb , then hit enter. If you're using Linux, open up a shell and type irb and hit enter. How do you run a script? Steps to write and execute a script Open the terminal. Go to the directory where you want to create your script.

Create a file with. Write the script in the file using an editor. Run the script using. How do you run a program? Run a program in Microsoft Windows In Windows, to run a program, double-click the executable file or double-click the shortcut icon pointing to the executable file. If you have a hard time double-clicking an icon, you can click the icon once to highlight it and then press the Enter key on the keyboard.

What is Erb file? What is the file extension for Ruby? What is an RB file? Software program written in Ruby, an object-oriented scripting language; designed to be simple, efficient, and easy to read; can be edited with a text editor and run using Ruby.

Ruby is available in several different versions, or "gems," including Ruby on Rails, Mongrel, and Capistrano. What is Ruby code? Ruby is an interpreted, high-level, general-purpose programming language. It was designed and developed in the mids by Yukihiro "Matz" Matsumoto in Japan. It supports multiple programming paradigms, including procedural, object-oriented, and functional programming. Improve this question. Wouldn't you want to iterate over each line rather than the entire file?

In any case, a simple web search will provide an abundance of examples for this. Add a comment. Active Oldest Votes. Also, the grep method can be used: File. Improve this answer. Matheus Moreira Matheus Moreira The simplest way to get the root is to do: rake routes grep root If you want to do it in Ruby, I would go with: File.

Thanks for pointing the OP to rake routes. My only suggestion would be that one should use fgrep or grep --fixed-strings if one isn't trying to match a regular expression.

Something such as: f. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Returns true if strio is not writable, false otherwise. Returns true if strio is at end of file.

The stringio must be opened for reading or an IOError will be raised. Returns the Encoding object that represents the encoding of the file. If strio is write mode and no encoding is specified, returns nil. Returns strio itself. Just for compatibility to IO. Returns the current line number in strio. The stringio must be opened for reading. The two values will differ if gets is called with a separator other than newline.

Manually sets the current line number to the given value. Positions strio to the beginning of input, resetting lineno to zero. Seeks to a given offset amount in the stream according to the value of whence see IO seek.

Returns the argument unchanged. Truncates the buffer string to at most integer bytes. The strio must be opened for writing. Pushes back one character passed as a parameter onto strio such that a subsequent buffered read will return it. There is no limitation for multiple pushbacks including pushing back behind the beginning of the buffer string.