From: Gennady Bystritsky <Gennady.Bystritsky@...>
Date: 2006-05-03T01:30:59+09:00
Subject: Re: Calling Shell Scripts from Ruby ?

 

> -----Original Message-----
> From: list-bounce@example.com 
> [mailto:list-bounce@example.com] On Behalf Of Dinesh Umanath
> Sent: Tuesday, May 02, 2006 9:18
> To: ruby-talk ML
> Subject: Calling Shell Scripts from Ruby ?
> 
> Hi all,
> 
> I have two questions
> 
> 1)Is it possible to call "Shell Scripts" from ruby? Say if i 
> have a shell sciprt named "test.sh", how can i call this from 
> ruby? Also if i can call like that,is it possible to get the 
> output of that script passed back to ruby?

Shell scripts fall into "any Unix command" category, so keep on reading.

> 
> 2)How can i call any "Unix command" residing from a ruby program??

1. Backquotes

result = `test.sh`

2. exec(), fork/exec

exec 'test.sh'
===
Process.wait fork {
  exec 'test.sh'
}

3. popen(), popen3(), etc.

IO.popen('test.sh') { |_io|
  _io.readlines()
}

4. Good old system()

system('test.sh')

Read about all those facilities in the documentation to get the most out
of it.

Gennady.

> 
> 
> Thank You
> Dinesh
> 
> --
> Posted via http://www.ruby-forum.com/.
> 
>