Run Ruby Script From Command Line

One off ruby scripts run the gamut on the services they can provide you.

Run ruby script from command line.

Ruby is generally run from the command line in the following way ruby options programfile arguments. Professionals locate the sh file by typing ls and cd. If you want to improve the script feel free to update it at the link. You ll be able to gets from and puts to the command line now.

Click ruby 2 2 2 near the top of the rubyinstallers list. If the script is executable and the first line of the script is usr bin ruby or whatever the path to your ruby interpreter might be then you should be able to launch the script directly i e. The following example shows the proper syntax to use to launch the test rb ruby script from a command line with the arguments test1 and test2. The terminal has a rich set of powerful tools that are accessible by typing the commands.

My script rb def say input puts what should we say. A list of rubyinstallers appears. Test rb test1 test2 you may encounter a situation in which you need to pass an argument to a ruby program but there s a space in the command. This explanation is based on a commented ruby script from a friend of mine.

Once there you can list files using the dir command on windows or the ls command on linux or os x. Once you can see for example script1 sh with ls run this script sh why do it the complicated way. From little helpers to full on command line utilities the possibilities are endless. Some bash syntax is not supported by bin sh on all systems.

The script should ask you for your. To run the test rb ruby script run the command ruby test rb. Otherwise execute the interpreter and pass it the script as an argument ruby myscript rb if you want to run the script from anywhere using a simple command wrap one of these. The interpreter can be invoked with any of the following options to control the environment and behavior of the interpreter.

Once you are in the correct current folder you can run the script like this script1 sh. Here are ways to execute a shell script. It s easy just create a file with the extension rb navigate to that file s directory from the command line and run it using ruby filename rb the dollar sign is just the command prompt. Go to ruby installer in your web browser.

Click the big red download button. Open a command line window and navigate to your ruby scripts directory using the cd command. First note that when ruby calls out to a shell it typically calls bin sh not bash. Using the classic hello world script where all we do is print hello world to the console i m going to show you four ways in which you can write and run a script with ruby.