From: Suraj Kurapati <snk@...>
Date: 2008-10-04T02:04:49+09:00
Subject: Re: Using Shell linux commands in Ruby!

Lex Williams wrote:
> Another way to execute a command would be through the system method. 

See also IO#popen:

>> IO.popen('cat', 'w+') {|f| f << 'hello'; f.close_write; puts f.read }
hello
=> nil
>> puts $?.exitstatus
0
=> nil

> But then you couldn't get the command output that easily,
> since system returns an exit code .

Wrong.  Obtaining the output of a command has nothing to do with the 
exit code:

>> `false`
=> ""
>> puts $?.exitstatus
1
=> nil
-- 
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