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POunix at command pass variable to shell script?
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copied!<p>I'm trying to setup a simple timer that gets started from a Rails Application. This timer should wait out its duration and then start a shell script that will start up ./script/runner and complete the initial request. I need script/runner because I need access to ActiveRecord.</p> <p>Here's my test lines in Rails</p> <pre><code>output = `at #{(Time.now + 60).strftime("%H:%M")} < #{Rails.root}/lib/parking_timer.sh STRING_VARIABLE` return render :text => output </code></pre> <p>Then my parking_timer.sh looks like this</p> <pre><code>#!/bin/sh ~/PATH_TO_APP/script/runner -e development ~/PATH_TO_APP/lib/ParkingTimer.rb $1 echo "All Done" </code></pre> <p>Finally, ParkingTimer.rb reads the passed variable with</p> <pre><code>ARGV.each do|a| puts "Argument: #{a}" end </code></pre> <p>The problem is that the Unix command "at" doesn't seem to like variables and only wants to deal with filenames. I either get one of two errors depending on how I position "s</p> <p>If I put quotes around the right hand side like so </p> <p>... "~/PATH_TO_APP/lib/parking_timer.sh STRING_VARIABLE"</p> <p>I get,</p> <blockquote> <p>-bash: ~/PATH_TO_APP/lib/parking_timer.sh STRING_VARIABLE: No such file or directory</p> </blockquote> <p>I I leave the quotes out, I get,</p> <blockquote> <p>at: garbled time</p> </blockquote> <p>This is all happening on a Mac OS 10.6 box running Rails 2.3 & Ruby 1.8.6</p> <p>I've already messed around w/ BackgrounDrb, and decided its a total PITA. I need to be able to cancel the job at any time before it is due.</p>

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