[Rails] Re: Looking for a Ruby, ROR code sample or info

[Johan Sörensen]

Hi,

On 1/24/06, Straaten, Onno van der <onno.van.der.straaten at logicacmg.com> wrote:
> Yes, sorry that is relevant.
> On windows platform I want to call a command line tool and read the
> output.

use `

irb(main):001:0> `df -h`.grep /disk0s3/
=> ["/dev/disk0s3               81G    72G   8.0G    90%    /\n"]

$ ri Kernel#\`
--------------------------------------------------------------- Kernel#`
     `cmd`    => string
------------------------------------------------------------------------
     Returns the standard output of running _cmd_ in a subshell. The
     built-in syntax +%x{...}+ uses this method. Sets +$?+ to the
     process status.

        `date`                   #=> "Wed Apr  9 08:56:30 CDT 2003\n"
        `ls testdir`.split[1]    #=> "main.rb"
        `echo oops && exit 99`   #=> "oops\n"
        $?.exitstatus            #=> 99

also see `ri popen`

and http://www.ruby-doc.org/stdlib/libdoc/open3/rdoc/

cheers,
JS

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