From: "Dmitry V. Sabanin" <sdmitry@...>
Date: 2004-05-31T18:06:52+09:00
Subject: Re: elegant way to say "try this thing, one at a time, until condition is met"

On Monday 31 May 2004 16:31, David Garamond wrote:
> Example: I need to unmount /usr and /usr2, but currently I can't because
> there are some opened files from those partitions. I am going to try
> shutting down daemons or killing some processes (or other things), one
> at a time, until I can unmount it.
Sorry if that's not what you want, but i had this idea when I read your post:

# emulating condition
$counter = 0
def cond_met
  $counter += 1
  $counter > 1 ? true : false
end

# algo itself, services could be an array of commands to execute
services = %w| httpd squid sendmail |.reverse
begin
  serv = services.pop
  system "echo /etc/init.d/#{serv} stop"
end until cond_met

-- 
sdmitry -=- Dmitry V. Sabanin
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