Ruby Command Prompt Commands

Question

I am designing a ruby program that needs to run a command and store it a variable.

    var = exec('some command');

This doesn't work the way I want it to, it just prints the output from the command prompt and then ends the program. So is there a function that doesn't end the program, doesn't print the cmd output and stores the information in a variable?

Thanks in advance.

sandymatt · Accepted Answer · 2014-02-05 18:24:39Z

4

You need to use either Ruby's built in backtick syntax, or use %x

output = `some command`

or

output = %x(some "command")

answered Feb 5, 2014 at 18:24

sandymatt

5,5851 gold badge21 silver badges19 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

mestachs · Accepted Answer · 2014-02-05 18:25:20Z

0

Open3 grants you access to stdin, stdout, stderr and a thread to wait the child process when running another program. You can specify various attributes, redirections, current directory, etc., of the program as Process.spawn.

See the various ways of executing a command

answered Feb 5, 2014 at 18:25

mestachs

1,88915 silver badges17 bronze badges

1 Comment

the Tin Man Over a year ago

Open3 has a lot of capability, but wading through the documentation would stifle the OPs creativity. Using capture2, capture2e or capture3 would be good starting places if not using backticks or %x are not friendly enough.

Collectives™ on Stack Overflow

Ruby Command Prompt Commands

2 Answers 2

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related