How to capture the output of a call to Kernel.system

ruby-talk
1

I suspect that this is an extremely simple question to answer.

How do you capture the output of a system call?

For example, if I do this:

x = system("date")

Thu Jun 18 13:00:00 CDT 2009
=> true

x

=> true

I would like to capture the output of the date command. How do I do it?

Thanks,
Wes

···

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Posted via http://www.ruby-forum.com/.

2

x = `date`

if you need to capture more than just stdout, i recommend the systemu gem.

best,
michael guterl

···

On Thu, Jun 18, 2009 at 2:01 PM, Wes Gamble<weyus@att.net> wrote:

I suspect that this is an extremely simple question to answer.

How do you capture the output of a system call?

For example, if I do this:

x = system("date")

Thu Jun 18 13:00:00 CDT 2009
=> true

x

=> true

I would like to capture the output of the date command. How do I do it?

3

There's also IO.popen and Open3.popen which are part of the standard
library IIRC.

Kind regards

robert

···

2009/6/18 Michael Guterl <mguterl@gmail.com>:

On Thu, Jun 18, 2009 at 2:01 PM, Wes Gamble<weyus@att.net> wrote:

I suspect that this is an extremely simple question to answer.

How do you capture the output of a system call?

For example, if I do this:

x = system("date")

Thu Jun 18 13:00:00 CDT 2009
=> true

x

=> true

I would like to capture the output of the date command. How do I do it?

x = `date`

if you need to capture more than just stdout, i recommend the systemu gem.

--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/