Dear All,

In my ruby script below lines displays IPs which I am reading from a file.

Something like this if it was bash
I am looking a way to get the output in a variable and then pass as an argument to be used in a function. I have tried few options from Google in vain.

Forgive my ignorance on this. I am not very well versed with Ruby as of now.

I'm not a Ruby programmer (Python right now), but things tend to be transferable across languages.

Remember that puts is just printing to the screen; it's not returning a value. What you're printing to the screen is line.split[0] for the case where that regex matches.

So, you just want to do the same, i.e.

Break tasks down into smaller steps and then work out how to do each step.

Thanks for the quick response, I tried this with no luck.

I believe you need to quote the string that contains your variable, so that

puts #{str}

should be

puts "#{str}"

This works for me. Again, I'm not a Ruby programmer, so don't know the ins and outs of the language.

Edit: FWIW, you can also try things out at the interactive prompt - run irb in a terminal.

1 members found this post helpful.

Perfect. You should start programming in ruby too.

Many thanks for the help. This works just fine.

But when I try to pass variable 'myip' in a function, the value does not gets passed.

This just works just fine, when I ask the the user interactively.

No idea, I'm afraid. I didn't realise '$' was used for variables in Ruby (at least sometimes, from your post), so I'm out of my depth now. I'd suggest reading up more on functions and variables in the language and maybe consult a dedicated Ruby forum (I'm not sure how many Ruby programmers are on LQ).

I'm not sure how you're learning Ruby, but maybe the Ruby Koans are good: http://rubykoans.com/.

1 members found this post helpful.

No worries mate. I do not know why/how, but this worked.

I am glad, I learnt something today. Thanks for your help and patience.

In general I would say, if you are going to learn a language then have a look at some tutorials and at least try to get the basics down.

You are looking at this question by, initially, trying to bend it to do what you do elsewhere and hence getting the wrong results.

Furthermore, if you do look up some tutorials you will see that #{} is only needed to expand a variable inside quotes and seeing as you have nothing else in the quotes,
both the quotes and #{} are not needed. Also, $ if for global variables so as a good practice you should get out of the habit of needing them.

Lastly, your question is very ill-formed and by asking it piecemeal it has slowed the answering process. In future, ask what you need, and show examples using informative data.

As a guide you may also find the following useful :- https://github.com/bbatsov/ruby-style-guide

1 members found this post helpful.

Hi Grail,

I did looked on some tutorials, may be I had missed this point. I will to try be more explanative next time. Thanks.

I am following this tutorial now, looks very well organized to me. I hope this will be helpful for others who are on the same learning curve.